Pests Archives - LandWISE - Promoting sustainable land management https://www.landwise.org.nz/category/pests/ LandWISE promotes sustainable production through leadership, support and research. Since we began in a field in 1999, we’ve completed a range of projects helping to conserve our soils, use our water wisely and get environmental and economic benefits from new (and old) technology options. Sun, 01 Dec 2024 21:48:34 +0000 en-US hourly 1 https://wordpress.org/?v=6.7.1 https://i0.wp.com/www.landwise.org.nz/wp-content/uploads/2022/03/Landwise-logo-sm20.jpg.jpg?fit=32%2C11&ssl=1 Pests Archives - LandWISE - Promoting sustainable land management https://www.landwise.org.nz/category/pests/ 32 32 204183287 Biodiversity at the MicroFarm https://www.landwise.org.nz/2024/11/29/biodiversity-at-the-microfarm/ Thu, 28 Nov 2024 18:40:42 +0000 https://www.landwise.org.nz/?p=2201 Earlier this year we learnt of an interesting project focusing on increasing biodiversity on vegetable farms. The aim of this joint project between A Lighter Touch, Vegetables NZ and Onions NZ is to reduce pest insects in crops by increasing the abundance of beneficial insects on vegetable farms, therefore reducing the need for insecticides. Two...

The post Biodiversity at the MicroFarm appeared first on LandWISE - Promoting sustainable land management.

]]>
Earlier this year we learnt of an interesting project focusing on increasing biodiversity on vegetable farms. The aim of this joint project between A Lighter Touch, Vegetables NZ and Onions NZ is to reduce pest insects in crops by increasing the abundance of beneficial insects on vegetable farms, therefore reducing the need for insecticides.

Two suggested approaches for increasing biodiversity caught our attention. Over the last six months, we have been exploring their implementation at the MicroFarm. We are enormously grateful to Olivia Prouse for supporting our biodiversity journey so far. We are also grateful to Richard Mills from Summerfruit NZ for leading the way in Hawke’s Bay, and showing us the importance of just giving something a go! We also extend our gratitude to other growers engaging in this initiative, who have been sharing their experiences.

Mobile Insectaries

Mobile insectaries (moveable pods) aim to provide a source of shelter, nectar, alternative hosts and pollen (SNAP) for beneficial insects. The concentrated areas of SNAP support natural enemies, which can aid in pest control in vegetable crops. The moveable pods can be moved in and out of crops easily during the year.

Following the detailed ‘how to’ guide provided by ALT, with additional support from Olivia Prouse for plant selection, we built four moveable pods. Each pod has native five plants, all selected to flower at different times of the year. The species selected were mainly plants that had small flowers to provide habitat to small predatory wasps and other small insects which cannot feed on large flowers like commonly grown manuka.

We have been monitoring the pods to see what is flowering each month. While there is some maintenance required for weeding and watering, all plants survived the winter and are thriving this spring. We are excited to have species like Pimelea mimosa, which is a native daphne, naturally found only on Te Mata peak, and to have two species of Muehlenbeckia, which provides a food source for NZ native copper butterfly.

Annual Flower Strips

The aim adding annual flowering strips to a farm is to enhance above ground diversity. Again, this increases the diversity of natural pest insect enemies, providing additional pest control.

At the MicroFarm, we had two specific areas that made for good candidates for annual planting strips. The first is along our driveway, an area which is normally sprayed year-round for weeds. The second is under the irrigator guide cable, another area that gets sprayed, particularly in the spring and summer when the irrigator is running.

Using the ‘how to’ guide from ALT, we have planted a variety of annual flowers in these areas to see what might be suitable. In late September, we planted nine 10 m long plots of annual flowers, each with different combinations of species planted. The rest will planted by early December. We have been monitoring what is growing and what is flowering, and are excited to see insects present and a range of different colored flowers along the driveway.

What’s next?

We continue to monitor the moveable pods and annual flowering strips. We hope that our late plantings will persist through the summer and autumn. While not formally part of our main Carbon Positive project, it is a nice supplementary demonstration. We hope to showcase the ALT guides and provide some regional information about what may be suitable to grow (annuals and perennials) here in Hawke’s Bay. Read more about our journey in the latest A Lighter Touch newsletter here!

The post Biodiversity at the MicroFarm appeared first on LandWISE - Promoting sustainable land management.

]]>
2201
Lessons from two years of winter cover crops https://www.landwise.org.nz/2024/10/03/lessons-from-two-years-of-winter-cover-crops/ Thu, 03 Oct 2024 04:20:47 +0000 https://www.landwise.org.nz/?p=2138 When the Carbon Positive project began, most of the Operations Advisory Group probably thought “six years = six crops”. Certainly, the focus for the operations group has been on the summer crop(s). A lot of energy has been put into getting the operations right for each treatment. Our winter cover crops, initially thought to be just...

The post Lessons from two years of winter cover crops appeared first on LandWISE - Promoting sustainable land management.

]]>
When the Carbon Positive project began, most of the Operations Advisory Group probably thought “six years = six crops”. Certainly, the focus for the operations group has been on the summer crop(s). A lot of energy has been put into getting the operations right for each treatment. Our winter cover crops, initially thought to be just something that happens between cash crops, have turned out to be more important than expected. We are now seeing the project as growing twelve or thirteen crops in six years!

What to plant?

First off, what should we plant? I don’t think we have yet got our cover crop mixes quite right. This year, our hybrid and regen treatments were planted in a diverse mix of 7 species (black oats, tillage radish, vetch, buckwheat, sunflowers, crimson clover and Persian clover). This was to get lots of plant diversity over the winter.

A frost in May killed the buckwheat and sunflowers, which meant they weren’t present over the winter. We planted tillage radish as it is supposed to be the “crowbar of the soil” and will break through tillage pans. Unfortunately, our radishes knew better, hit the pan and, in some areas, popped themselves 10cm out of the ground. This is potentially an issue for both the hybrid and the regen treatments, as chunks of radish could be picked up by the harvester and end up at the factory which may be a problem for product contamination.

Additionally, the radish started to flower and was beginning to set seed, so radish if unmanaged, could have become be a new weed species for us.

In this conversation, there is the question of how much plant diversity do we need? Some of the species we are using, might be okay in a pastoral grazing scenario, but could be hard to manage in a cropping system and therefore become a weed for us. In the systems we are looking at, are we able to select fewer plants, that provide functional diversity, without adding added complexity of to the management of the cover crop?

Another consideration is disease carry over. We intentionally avoided planting tic beans this year, as they could carry unwanted diseases into the following legume crops. Tic beans may be an option ahead of other crops.

Do we graze?

One of the five regenerative principles is to integrate livestock, which we have not yet done in our Regen treatment. However we have grazed our Conventional treatment, which might seem a bit backwards. It is common for Heretaunga Plains growers to plant an annual ryegrass over the winter and graze it with lambs, so we are including sheep in our Conventional treatment.

In the last two years, we wanted to use the cover crop as a mulch on the surface for our main crop to keep the soil surface covered, another of our regenerative principles. If we have a mulch on the soil surface, we hope it will significantly reduce the need for herbicides. To do this effectively, we need to grow a lot of biomass, and therefore don’t want to have sheep or cattle grazing it. We don’t really have a long enough winter growing season to do both. This is where we find tension between some of the regen principles when applied to an annual cropping system. We might yet include livestock; however, we aren’t sure what this will look like in practice.

In addition, lambs can do considerable soil damage over the winter. The photos below show the difference between grazing for a couple of weeks in dry conditions and grazing over a wet weekend this winter.

When to terminate?

Ahead of the tomato planting last year, we had a cover crop of oats, vetch and lupins in the Regen treatment. You may remember that we planned to use a modified tomato planter, which transplants seedlings directly into a mulched cover crop, eliminating the need for both cultivation and herbicides. Just before planting, we met two problems with this plan.

The first issue was that the cover crop was still actively growing and sucking moisture out of the soil, so the soil was very dry in the regen treatment. This led to large, blocky clumps of soil forming in the top 10cm of the profile. The second issue was that the timing of maturity wasn’t right for mulching and killing the oats. In a test area of cover crop, we found the oats regrow, and we had very limited herbicide options to deal with this. It might have worked if we had waited a couple of weeks, however we were working with a factory schedule and had a planting date that wasn’t very flexible.

We want to apply lessons from that experience this year. We are already seeing low soil moisture levels and low nitrate levels in the Regen treatment. To manage the amount of biomass we have grown, and stop the flowering radish from seeding, the cover crop was mulched on the 1st of October. We expect the mulching will not kill the oats, and that we will need to manage regrowth.

How to terminate?

We planted a winter cover crop, it has grown all winter, so what next? Our Operations Advisory Group is having an ongoing discussion on how we terminate it in our Regen treatment. The initial plan was to use a roller crimper, but the consensus is that this is probably not quite the right tool for the job. We have since mulched the cover crop, but we will need another action to terminate it (oats weren’t mature enough). We have two options; we either spray out the oat regrowth or we cultivate to bury the residue.

This is an important conversation for us, as the use of glyphosate is not widely accepted by the Regenerative community. But our discussions with no-till or minimum tillage growers, and some of the Canterbury regenerative croppers, show it is an important tool for successfully reducing or eliminating cultivation. Most of the literature indicates that cultivating is the number one thing to avoid if we want to increase soil carbon, which is the main metric in this trial.

Weed management is a key consideration in beans as there are few herbicide options. If the crop is too weedy it won’t be harvested. If we cultivate, we will have to manage weeds through a suite of other herbicides that have the potential to as harmful as, or worse than glyphosate when compared using the Environmental Impact Quotient.

How do we best minimise soil disturbance? Both cultivation and herbicide use fall into the category of soil disturbance. The question for our operations group comes down to what is the ‘lesser of two evils’- glyphosate or cultivation?

More questions than answers!

A key lesson from the last two years, is that cover crops are important. We have also found that cover crop management is quite complex. There are a lot of questions we need to ask ourselves:

• What is best to plant? Does this change depending on what we grow next?

• What is the ideal way to terminate, in order to minimise soil disturbance?

• How will the timing of termination impact the planting date?

• How much diversity do we want/need?

• How do we manage the biomass grown?

• What additional equipment do we need?

• Livestock vs mulch? Cattle vs sheep?

The answers to these questions will probably change for each crop, each year depending on a whole range of factors. We have established a small separate demonstration area on site where we are playing around with different cover crop options so we can learn more each winter.

The post Lessons from two years of winter cover crops appeared first on LandWISE - Promoting sustainable land management.

]]>
2138
More questions than answers – Regenerative Ag https://www.landwise.org.nz/2024/08/05/more-questions-than-answers-regenerative-ag/ Mon, 05 Aug 2024 00:00:07 +0000 https://www.landwise.org.nz/?p=2077 LandWISE Project Manager Alex Dickson discusses some of her thoughts on Regenerative Agriculture after her trip to Europe in June. As I grapple with my own understanding of Regenerative Agriculture (RA), a trip to Europe was just the thing I needed to provide me with more questions than answers! EU Green Deal- Farm to Fork...

The post More questions than answers – Regenerative Ag appeared first on LandWISE - Promoting sustainable land management.

]]>
LandWISE Project Manager Alex Dickson discusses some of her thoughts on Regenerative Agriculture after her trip to Europe in June.

As I grapple with my own understanding of Regenerative Agriculture (RA), a trip to Europe was just the thing I needed to provide me with more questions than answers!

  1. What are the right policy tools to support both sustainable food production and growers making a livelihood?
  2. How does RA scale to go beyond a ‘buzz word’ to have a meaningful impact on the environment?
  3. What role do large corporations play in the transition to Regen Ag?
Sugar beet research trial at Bayer’s ForwardFarm near Monheim, Germany

EU Green Deal- Farm to Fork Policy

In 2020 the European Union introduced the Farm to Fork (FTF) policy as part of the EU Green Deal. The policy aims to rethink the whole food value chain, minimise the environmental impact of food production, improve resource efficiency and enhance biodiversity.

Targets set by the FTF include:

  • 50% reduction in the use and risk of chemical pesticides by 2030
  • 50% reduction in nutrient losses, while ensuring no deterioration in soil fertility by 2030
  • 20% reduction in fertiliser use by 2030
  • 50% reduction in the sales of antimicrobials for farmed animals and aquaculture by 2030
  • 25% of total farmland to be farmed organically by 2030 (9.9% of farmed area was under organic farming in 2021).

These are ambitious targets. In response to these targets, European businesses of all sizes are having to rethink what ‘the system’ looks like in the future and how they fit into food production not only in the face of environmental policy like the FTF, but also in a changing natural environment.

“Regenerative practices are for the future, not for today”

A quote by Tony Salas (founder of Shared X, Peru) at the 2024 IFAMA Conference in a session dedicated to discussing the future Regenerative Agriculture. Shifting from conventional growing methods to regenerative methods shifts the focus from yield, to the management of a functional ecosystem with an emphasis on healthy soils.

Salas reflected on the challenges that the Organic Agricultural movement has had in scaling globally, in 2021 only about 1.6% of total agricultural land was managed organically, and in global food sales organic produce accounted for 1-2%. Such challenges include regulatory barriers, reduced yields, market and distribution challenges and lower profitability.

So what should the regenerative system approach be? How do we scale RA to improve ecosystem and soil health, AND ALSO feed a growing global population, meet increasingly stringent regulatory targets and provide farmers and growers with a good income? Three key points stood out;

  1. Focus on adopting a continuous improvement model (Plan>Do>Check>Act) at all stages of the food-value chain
  2. Develop flexible standards and avoid exclusive certification
  3. Actions must be underpinned with a focus of minimising agricultures contribution to climate change.

“From ‘producing more with less’ to ‘producing more and restoring more’.”

A comment from Kai Wirtz from Bayer, one of the worlds largest agri-chemical companies. Bayer are putting Regenerative Agriculture (RA) at the heart of their company, with a vision to restore nature, and scale regenerative agriculture. They believe that it is possible to grow more using regenerative practices. Their sustainability commitments include reducing GHG emissions per kilogram of crop by 30%, reducing the environmental impact of crop protection by 30%, and supporting 100 million smallholder farms in low and middle-income countries.

Bayer has a global footprint, and they see their portfolio of products and technologies being integrated into regenerative agricultural systems, taking a multi-crop/multi-season approach to farming. This portfolio includes biologicals, crop protection, advanced seed breeding and digital tools.

“Regenerative agriculture is not a destination but a path”

I have arrived home with more questions than answers.

Europe appears to be leaning into regenerative agriculture in a big way, in response to not only stricter environmental policy, but also in what seems to be reasonably genuine concern for the future of the planet and our collective ability to feed a growing population. Large companies (like Bayer) are positioning themselves in the market to support growers in implementing regenerative practices to suit their individual farm systems in countries around the world. We see this in platforms like the Sustainable Agricultural Initiative (SAI), who have signed on over 180 global companies, with the shared goal of transforming agricultural practice for a more sustainable future.

Back in New Zealand, I wonder if we are taking regenerative agriculture serious enough? There are many unknowns, we don’t really know how RA works in NZ farm systems (though we are trying to find out) and change is scary – I find that in our own project. However, I think we know enough to have a go, to start exploring ways of improving management practice to restore ecosystem and soil health.

How do we scale regenerative agriculture in a way that we have meaningful impact on restoring the environment? How do we access the technologies being developed overseas to support change? What does the future of market access look like if we don’t adapt? What does the future of our environment look like if we don’t start to look after our soils?

Or to put it more positively, what does the future look like if we do start to look after our soils? What are the possibilities?

Some other interesting business to explore

The post More questions than answers – Regenerative Ag appeared first on LandWISE - Promoting sustainable land management.

]]>
2077
Rebuilding Our Soils – Successful Conference https://www.landwise.org.nz/2024/05/22/rebuilding-our-soils-successful-conference/ Tue, 21 May 2024 22:32:10 +0000 https://www.landwise.org.nz/?p=2008 Many thanks to everybody involved in our 2024 Annual Conference! All up we had 99 registrants who heard from 23 amazing presenters and saw 9 different practical demonstrations. Our special thanks to everyone who contributed by sharing their knowledge and experiences, and to delegates for their active interaction. Thanks to Pure Catering and our hosts...

The post Rebuilding Our Soils – Successful Conference appeared first on LandWISE - Promoting sustainable land management.

]]>

Many thanks to everybody involved in our 2024 Annual Conference! All up we had 99 registrants who heard from 23 amazing presenters and saw 9 different practical demonstrations. Our special thanks to everyone who contributed by sharing their knowledge and experiences, and to delegates for their active interaction. Thanks to Pure Catering and our hosts at the Havelock North Function Centre and at the Centre for Land and Water which hosts our MicroFarm and the demonstrations.

Many thanks also to our conference sponsors and supporters. These organisations support us through the year as well as for the conference and we are very grateful. They are the most loyal of partners we could hope for.

Ka mau te wehi!

The post Rebuilding Our Soils – Successful Conference appeared first on LandWISE - Promoting sustainable land management.

]]>
2008
Rebuilding Our Soils https://www.landwise.org.nz/2024/04/26/rebuilding-our-soils/ Fri, 26 Apr 2024 01:20:18 +0000 https://www.landwise.org.nz/?p=1837 LandWISE 2024 – Rebuilding Our Soils Havelock North – 15-16 May 2024 We are looking forward to our annual conference this week. We will report on our current work with industry, researchers and growers seeking out and trialing best ways to rebuild soil.Our invited speakers will present alternative practices and novel ideas, some perhaps fringe,...

The post Rebuilding Our Soils appeared first on LandWISE - Promoting sustainable land management.

]]>

We are looking forward to our annual conference this week.
We will report on our current work with industry, researchers and growers
seeking out and trialing best ways to rebuild soil.
Our invited speakers will present alternative practices and novel ideas,
some perhaps fringe, but all looking to be mainstream, on a range of topics.

The key topics in 2024 are:

Carbon Positive – Regenerative Cropping
Alternative Pest Management
A year on – Cyclone impacts
Data capture to understanding
New Zealand Agritech
Novel Technologies

We welcome presenters old and new and are most excited by
the breadth and depth of knowledge they offer on many topics.
We also have a great range of practical demonstrations lined up for
viewing at the MicroFarm.

The draft programme is available now, and registrations are open.

We are delighted that Apatu Group is continuing their sponsorship
to allow secondary students free conference attendance, and that
for 2024 they have been joined by Vegetables NZ and Onions NZ
so an even larger cohort can attend.

We view this as a vital element, as such students are indeed the future of our industry,
and feedback from previous years has been very positive.

Discount for our Financial Members = pay for one day, get the other free. See you there!

Thanks to BASF Crop Protection and Hawke’s Bay Regional Council for continuing their Platinum Sponsorships. Both are long-term, loyal supporters and we are most grateful. Our other loyal supporters are also back with us, so please take time to look and give them your support in return.

The post Rebuilding Our Soils appeared first on LandWISE - Promoting sustainable land management.

]]>
1837
Alternatives for Crop Protection https://www.landwise.org.nz/2024/04/26/alternatives-for-crop-protection/ Thu, 25 Apr 2024 23:21:09 +0000 https://www.landwise.org.nz/?p=1956 Presentations at the LandWISE Conference “Rebuilding Our Soils” In the summer of 2023-2024, the LandWISE MicroFarm grew process tomatoes for Heinz-Wattie’s using three alternative management systems: conventional, regenerative, and a hybrid taking from each. One of the principles for a regenerative system is to build natural resilience rather than rely only on a chemical-based crop...

The post Alternatives for Crop Protection appeared first on LandWISE - Promoting sustainable land management.

]]>
Presentations at the LandWISE Conference “Rebuilding Our Soils”

In the summer of 2023-2024, the LandWISE MicroFarm grew process tomatoes for Heinz-Wattie’s using three alternative management systems: conventional, regenerative, and a hybrid taking from each. One of the principles for a regenerative system is to build natural resilience rather than rely only on a chemical-based crop protection regime. Nothing new, of course, we’ve had IPM programmes for decades.

How can we apply these concepts in an intensive process vegetable crop production system? What are the elements we need to consider, and how do we bring them together? There are tried and proven approaches, there are ongoing developments, and there are new ways that are being explored. Come to the LandWISE Conference “Rebuilding Our Soils” and hear what experts have to say!

Photo credit Baybuzz, Florence Charvin

Bruce Mackay, Heinz Wattie’s agricultural manager, has been an agronomist for a long time and has seen and tried different growing philosophies in a commercial context. As a key partner in Carbon Positive, Wattie’s has been deeply involved since Day Zero, and doubly so through the 2023-24 cropping season as we’ve worked to integrate regenerative agriculture principles into an intensive crop programme. Why is Kraft-Heinz interested at a global level? Why is Heinz-Wattie’s investing in local research?

Tika Schellevis started working on assessment of regen ag practices in Canada as part of her master’s degree in climate studies at Wageningen University. Over the last two years, Tika has been part of McCain Foods’ Regen Ag journey. Since October 2023, Tika has been working with the McCain Foods agronomy team in Timaru. Tike will outline how the Environmental Impact Quotient, EIQ, can help understand the relative impacts of different agrichemical options, and help select an optimal programme.

Jessica Vereijssen will discuss integrated pest management, using our crops as examples, but presenting transferable principles. She leads the Insect Dynamics, Ecology, and Sustainability team at Plant & Food Research in Lincoln. Jessica specialises in Integrated Pest Management and sustainable management programmes, considering the biology, behaviour, and ecology of pests. Her current research delves into (invasive) insect vectors such as psyllids and aphids, as well as the potential transmission of plant pathogenic organisms, leveraging her dual background in entomology and plant pathology. 

Chris Thompson will describe the use of predatory insects. He is a seasoned professional in the biotechnology industry, and Managing Director of Bioforce, where he leads the development of sustainable agricultural products and environmentally friendly solutions for various industries. When we received a “bag of bugs” to help control Tomato Potato Psyllid, he’s who we rang with twenty questions. Where do we put them? What agrichemicals might be OK? Which ones should we avoid at all costs? etc.

Since we began the Carbon positive project, we’ve been introduced to a huge range of products described variously as crop elicitors, bioactives, biostimulants, natural protectors and more. Tony Reglinski is a Senior Research Scientist at Plant and Food Research where he investigates the use of plant defence inducers to enhance natural resistance against pathogen attack. His research has covered a broad range of crops including, cereal, radiata pine, wine grapes and kiwifruit. His aim is to is to improve our understanding of the benefits and potential limitations of inducers in order to facilitate their practical implementation as crop protectants.

Come along and hear these experts as they lay out options to increase our resilience and reduce reliance on single approaches to crop protection. The principles and concepts apply broadly, so there wil be gold nuggets regardless of your crop interests!

The post Alternatives for Crop Protection appeared first on LandWISE - Promoting sustainable land management.

]]>
1956
Focus on Agritech https://www.landwise.org.nz/2024/04/26/focus-on-agritech/ Thu, 25 Apr 2024 22:32:45 +0000 https://www.landwise.org.nz/?p=1964 Examples and discussions for horticulture and cropping Sustainable production through technology has been one of the key themes through the history of LandWISE Inc. We started with minimum tillage and strip tillage equipment, then rapidly adopted RTK GPS and autosteer, which we saw unlocked many opportunities for financial and environmental gains. We’ve looked a precision...

The post Focus on Agritech appeared first on LandWISE - Promoting sustainable land management.

]]>
Examples and discussions for horticulture and cropping

Sustainable production through technology has been one of the key themes through the history of LandWISE Inc. We started with minimum tillage and strip tillage equipment, then rapidly adopted RTK GPS and autosteer, which we saw unlocked many opportunities for financial and environmental gains. We’ve looked a precision viticulture, canopy monitoring, crop mapping, soil sensing and more. We investigated agricultural robotics and options for management software. So much stuff to keep up with!

The 2024 LandWISE Conference has three components dedicated to agritech: an innovation panel discussing the experience of taking an idea to commercial reality, a group presenting technologies that automate data collection and help make sense of it all to support management decision making, and a practical in-paddock session where equipment will be demonstrated.

In the session, “Commercialising New Technology”, Andrew Cameron will chair a discussion between Tim Neale from Data Farming, Matt Flowerday from Landkind, Clare Bradley from Agrisea NZ, Hamish Penny from Croptide, and Richard Beaumont from AGOVOR. Different people, different technologies, different growth paths and different insights.

“Data Capture and Understanding” builds on the agritech theme, presenting technologies to capture data remotely and turn it into information to assist management. Tim Neale’s DataFarming platform presents satellite data and interpretations, Matt Flowerday capture aerial imagery and has a platform to plan farm management spatially, Hamish Penny and Croptide have a “smartwatch” for plants, collecting internal water status information and sending it straight to your phone, and Lia Willis helps clients pull different layers of data together.

The Horizons Regional Council Practical Session at the MicroFarm will display technologies and give opportunity to discuss details with the people with answers. Look for drones and robots from Airborne Solutions, AGOVOR and Robomate, cover crops and roller crimpers, pest predators with Bioforce and new irrigation technology from WaterForce!

The post Focus on Agritech appeared first on LandWISE - Promoting sustainable land management.

]]>
1964
January 2024 Tomato Update https://www.landwise.org.nz/2024/01/26/january-2024-tomato-update/ Fri, 26 Jan 2024 02:54:37 +0000 https://www.landwise.org.nz/?p=1718 The Carbon Positive tomato crop has now been growing for 13 weeks. Our estimated harvest date is the 5th March, so just under six weeks remaining until harvest. All treatments have had a good fruit set and are reasonably disease free (minus a small amount of bacterial speck). We are on track for a good...

The post January 2024 Tomato Update appeared first on LandWISE - Promoting sustainable land management.

]]>
The Carbon Positive tomato crop has now been growing for 13 weeks. Our estimated harvest date is the 5th March, so just under six weeks remaining until harvest. All treatments have had a good fruit set and are reasonably disease free (minus a small amount of bacterial speck). We are on track for a good result at harvest. There are visual differences between the treatments. The conventional treatment has a dense canopy, the regenerative treatment has a more open canopy and the fruit is more exposed. The hybrid is somewhere in between. Management for the month of January has included three spray applications, two irrigations and one granular fertiliser application. More on this below.

Canopy Development Week 2 – 13

Pest Management

In mid-January we started to see holes appearing in tomatoes, caused by corn ear worm/tomato fruit worm. The first insecticide application we used (Benevia) is registered for chewing insects, so caterpillars were targeted early in the season. However, subsequent insecticides have predominantly targeted sucking insects (psyllid/thrips/aphids/whitefly). We applied Uphold (spinetoram) across all treatments to control fruit worm. The crop was inspected five days after application, and found no active caterpillars. Additionally, we still haven’t seen any psyllid on the sticky traps in the field, which is positive!

Images of tomato fruit worm found in trial plots

Nutrient Management

We have been regularly monitoring soil nitrate levels using the Nitrate Quick Test method. Nitrate levels have been declining since side dressing, which indicates that plant demand is exceeding supply of nitrogen. Fruit set has been good and we want to ensure there is enough energy in the canopy to increase fruit size (and yield).

Graph showing average Nitrate-N in top 30cm of soil profile, in each treatment, and timing of fertiliser applications.

Additionally, we have been doing monthly leaf tests to look at nutrient levels in the tomato leaves. There have been signs of leaf rolling, and purpling along the leaf margins in all treatments in January. This was more distinct in the Regen treatment. This is an indication of low phosphorus or potassium causing plant stress.

Image of purpling on underside of leaf (Plot 3- Regen Treatment)

Leaf tests showed lower than optimum Nitrogen percentages in the leaf for this stage in the season, as well as low P and K percentages (graph below showing N%). The Operations Advisory Group decided to apply a late application of fertiliser across all treatments. The Regenerative treatment has appeared stressed compared to the other treatments in recent weeks. There has been concern as to whether the canopy is big enough to size the fruit already set. The OAG used the information available to make a justified ‘grower decision’ to address the apparent nutrient deficiencies.

Graph showing Nitrogen percentage in tomato leaf, by treatment by plot, December and January analysis. Optimum range at different growth stages displayed as pink band.

Nitrogen concentrations in the leaf were lower in the Regen treatment than the other two treatments, so we decided to apply a higher rate of N, to support the plants to harvest. The OAG decided to apply YaraRega 9-0-27.5. The Conventional and Hybrid treatment had 9kg N and 27.5kg K applied (100kg/ha). The Regen treatment had 18kg N and 55kg K applied (200kg/ha). This is somewhat counter intuitive for the Regen treatment, however all of the treatments have now received the same amount of N, around 90kgN/ha. Even with this application the Regen plots have had much less potassium applied compared to the other two treatments.

Drone Application

Fertiliser applied late in the season is normally done using a tractor mounted spreader. However, because our plots are 12m wide, we are unable to get the desired spread width this way. We worked with Airborne Solutions to apply the fertiliser with their drone, to be more targeted with our application, plus avoids damaging the plants by driving over with a ground spreader. The spread of the product was uniform and spread to the 12m width of our plots. The drone carries 40kg of product so was a quick job to get done on our 1.5ha.

Images of Airborne Solutions drone spreading fertiliser over trial area

The post January 2024 Tomato Update appeared first on LandWISE - Promoting sustainable land management.

]]>
1718
Carbon Positive at the MicroFarm – February 2024 Field Walk https://www.landwise.org.nz/2024/01/26/carbon-positive-at-the-microfarm-february-2024-field-walk/ Fri, 26 Jan 2024 02:11:43 +0000 https://www.landwise.org.nz/?p=1763 Please register at Eventbrite Once again, we are opening the gates and doors to the public for a Carbon Positive at the MicroFarm field walk to view and discuss the Heinz-Wattie’s process tomato crop. We’ve been making nutrient, irrigation and crop protection decisions – come along and discuss our strategies and apparent effectiveness! Please register...

The post Carbon Positive at the MicroFarm – February 2024 Field Walk appeared first on LandWISE - Promoting sustainable land management.

]]>

Please register at Eventbrite

Once again, we are opening the gates and doors to the public for a Carbon Positive at the MicroFarm field walk to view and discuss the Heinz-Wattie’s process tomato crop.

We’ve been making nutrient, irrigation and crop protection decisions – come along and discuss our strategies and apparent effectiveness!

Image from our January 2024 field walk

Please register at Eventbrite

The post Carbon Positive at the MicroFarm – February 2024 Field Walk appeared first on LandWISE - Promoting sustainable land management.

]]>
1763
December in the MicroFarm Tomatoes https://www.landwise.org.nz/2023/12/21/december-in-the-microfarm-tomatoes/ Thu, 21 Dec 2023 01:00:48 +0000 https://www.landwise.org.nz/?p=1685 Our tomatoes have now been planted for eight weeks and we have seen a lot of growth since the November newsletter. Since our last update, the Watties operations team have mechanically weeded the interrow and Andy Lysaght has mechanically weeded in between the tomatoes. We have applied several sprays, side dressed, and irrigated. It is...

The post December in the MicroFarm Tomatoes appeared first on LandWISE - Promoting sustainable land management.

]]>
Our tomatoes have now been planted for eight weeks and we have seen a lot of growth since the November newsletter. Since our last update, the Watties operations team have mechanically weeded the interrow and Andy Lysaght has mechanically weeded in between the tomatoes. We have applied several sprays, side dressed, and irrigated. It is the first time the irrigator has been turned on in two years!!

Week 8 – Conventional
Week 8 – Hybrid
Week 8 Regenerative

Compare these images with last month’s post here>

Operations

Summary

The below table provides an overview of the three treatments and the main management decisions to date.  

ManagementConventionalHybridRegen
Spray 28/11/2023Kocide Opti (Fg)
Ridomil Gold MZ (Fg)
YaraVita Bud Builder (FN)
Kocide Opti (Fg)
Ridomil Gold MZ (Fg) YaraVita Bud Builder (FN)
Phoscheck (Fg) Aureo Gold (BB) YaraVita Bud Builder (FN)
Spray 7/12/2023Kocide Opti (Fg)
Ridomil Gold MZ (Fg)
Benevia (I)
Kocide Opti (Fg)
Ridomil Gold MZ (Fg) Benevia (I)
Aureo Gold (BB)
Ridomil Gold MZ (Fg)
Benevia (I)
Side dressing 15/12/2023400kg/ha YaraMila Complex (GN) 48N, 20P, 60K, 32S, 6.4Mg300kg/ha YaraMila Complex (GN) 36N, 15P, 45K, 24S, 4.8Mg200kg/ha YaraLiva Nitrabor (GN) 3kg/ha Granular Humates (BStim) 30.8N, 36.6Ca
Pre emerge herbicide 15/12/2023Boxer Gold (H) Magneto (H)Boxer Gold (H) Magneto (H)Nil
Foliar application 15/12/2023NilLevity Lono (FN) Biostart Foliacin (BStim)Levity Lono (FN) Biostart Foliacin (BStim)
Irrigation 16-17 Dec15mm15mm15mm
Irrigation 19-20 Dec15mm15mm15mm
Fg= Fungicide, FN= Foliar Nutrition, GN= Granular Nutrition, BStim (Bio-stimulant)
BB= Bio bactericide, I= Insecticide, H= Herbicide

Weed control

Due to continued wet weather we missed the window for our second Sencor (herbicide) application. Watties mechanically weeded with their Rototiller on the 1st of December, which supressed weed growth in the interrow ahead of side dressing. Andy Lysaght then weeded between the double row of tomatoes with one of his mechanical weeders. This was completed across all treatments.

The Badalini (multi-row rototiller) came through at side dressing, completing a shallow cultivation in the interrow and incorporated a pre-emerge herbicide to supress weeds. The operations team decided we would exclude the pre-emerge herbicide from the regen treatment, with the view that we can mechanically weed again if weeds do get out of control.

Watties’ Badalini system applying and incorporating herbicide and fertiliser

Disease management

The weather has generally been cooler and overcast through the early part of the season, perfect conditions for late blight and bacterial speck in tomatoes. Our the spray programmes for the Conventional and Hybrid treatments have been the same and have included regular applications of Kocide Opti (copper) to protect against disease. These treatments have also had two Ridomil Gold MZ applications (protectant fungicide for blight). We are trying to exclude copper applications from the Regen treatment, replacing the coppers with Aureo Gold, a bio-bactericide to control disease (mostly used in kiwifruit). Only one Ridomil application has been applied to the Regen treatment as the canopy was smaller early on and had better air movement around the plants.

Insect pest management

All treatments have had one application of Benevia insecticide. A second application is planned for the Conventional and Hybrid treatments later this week. This is mainly to protect plants against Tomato Potato Psyllid (TPP), however also controls aphids and thrips. Some Biological Control Agents (BCAs) have been released in the trial area to help control insect pests (more detail on this in subsequent post).

Nutrient management

Fertiliser decisions are made by the operations group, along with Mark Redshaw from Yara. A high rate of YaraMila Complex (full N, P, K, S, Mg, B, Fe, Mn, Zn) was applied to the Conventional treatment, with a slightly lower rate of Complex applied to the Hybrid treatment. As the background fertility of the plots is in theory high enough to support a crop of tomatoes, it was decided that the Regen treatment would have an application of nitrogen only, so had YaraLiva Nitrabor applied (N, Ca, B). We have been monitoring Nitrate-N levels using the Nitrate Quick Test every two weeks. Results for the top 15cm is displayed below.

Side-dressing

Fertiliser was applied in bands at side dressing through the Badalini (single pass with herbicide application), and worked into the interrow, close to the rows of tomatoes. The Hybrid treatment interrow surface was particularly hard and had two passes with the rototiller to break up the surface.

Foliar nutrition

All treatments had foliar nutrition with YaraVita Bud Builder applied in early November. Regular foliar applications to both the Hybrid and the Regen treatments are planned and bio-stimulants in the mix have been advised. Caution is being when these products are included with other sprays to minimise the risk of burn. In some cases, crop protection and foliar nutrition products are being applied separately.

Irrigation

Management

Irrigation has started with a 15mm application on 16 December that, after the heat and evapotranspiration over the weekend, barely changed soil moisture in the top 200mm where most of our root activity is currently. A second 15mm application was made immediately after the first, and a third is due.

Bucket test

We did an IRRIG8 bucket test and found a DU = 0.88 which is good.

We will make minor changes to the sprinklers on each end and expect an improvement as a result. At the inlet end, a 180 sprinkler is over-applying (orange line) and at the far end a sprinkler is underapplying.

Chart of Irrigation Depth from an IRRIG8 Lite Bucket test report.

Now is a great time to check irrigation using the bucket test – it is easy to do, it doesn’t take long, and it costs very little. Have a look at the guidance in our Irrigation Management online learning resource. You will need to login – it is free although we welcome paying members to help run the organisation!

“Carbon Positive” is a project running in partnership with the Hawke’s Bay Future Farming Trust. It is funded by the Ministry for Primary Industries, Hawke’s Bay Regional Council, Kraft Heinz Watties, McCain Foods, and BASF Crop Protection with in-kind support from many others.

The post December in the MicroFarm Tomatoes appeared first on LandWISE - Promoting sustainable land management.

]]>
1685