Tag Archives: crop protection

Soil borne fungi to suppress greenhouse pests

The new EU-funded project Greenresilient aims to study the ways in which pests and diseases are often suppressed by various naturally-occurring enemies and antagonists which can be found in cropping systems.

Within the project, Wageningen University & Research (WUR) is focussing on the role of beneficial microorganisms in the soil. Several strains of entomopathogenic fungi have already been isolated from five organic greenhouses across Europe, which have shown the potential to increases the resilience of plants to above-ground pests by acting as endophytes that induce plant resistance and/or produce toxic metabolites.

As part of the work, WUR will evaluate the isolated entomopathogens as endophytes in tomato plants to assess their effects on tobacco whiteflies, Bemisia tabaciand the South American tomato pinworm, Tuta absoluta. The aim is to better understand the role of these fungi in aboveground pest suppression and to find ways to enhance the presence and impact of these beneficial fungi.

The same soils will also be analysed by the Swedish University of Agricultural Sciences, who will focus on the interaction between soil microbial communities and suppression of soil-borne diseases.1

Photo Caption: A fly infected by entomopathogenic fungus

Photo Credit: Wikimedia / Alejandro Santillana / University of Texas at Austin

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Certis uses New Year to examine future trends

Kevin Price, head of Corporate Marketing and Communications at Certis Europe, has used the New Year to set out some of the challenges and trends that the company foresees in global food production.

He said that the crop protection company needed to understand the complex challenges facing ‘the long-term future of food production.’ Certis has been working with Forum for the Future to address these issues and inform its long-term strategies, and this has resulted in a project that has helped Certis understand how its future context may change.

“It seems likely that the size of the market for conventional crop protection products will reduce substantially,” said Kevin. “This will be due not only to regulatory developments but also to advances in precision agriculture and the increasing use of biological solutions alongside chemical solutions. We shall probably see a shift towards prevention rather than cure and a significant shift towards highly-targeted precision application where appropriately adapted formulations and alternative technologies replace spraying to a great extent. With such relatively dramatic changes in the tools available to growers, we anticipate a need for greater service support alongside the products.”

He also indicated a belief that high-tech physical crop protection, such as mechanical weeding carried out by drones and autonomous robots, will become mainstream. “It is clear that farm data is growing in importance in terms of the development of technologies and the provision of crop protection solutions. Farmers will have information at their fingertips from the technology involved in every aspect of the farming operation so that they know exactly when, where and how to target pests and diseases before they take hold. The application of chemicals will be highly targeted and thus quantities used will be vastly reduced.”

Photo Credit: Certis

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Digital weed zapper to launch next year

Case New Holland group has signed a deal with German weed technology company Zasso to bring a new XPower digital weeding technology to market.

The new system enables non-selective burn-down applications such as field preparation, potato haulm desiccation, and special treatments for wine grapes and trees. It has been awarded with a Bronze Medal ahead of the SIMA 2019 machinery show in Paris next year.

XPower will be marketed as part of a suite of new Case IH precision farming technologies under the brand name AGXTEND. According to the manufacturers, digital herbicide technology is at least as efficient as chemical herbicides in terms of controlling weeds, and is more efficient, economic, practical and crop-safe than mechanical weeding, in addition to which it does not disturb the soil nor encourage further weed growth.

The system is said to be as effective on larger weeds as smaller ones, and more practical, safer and cheaper than existing scorching or burning systems used for total weed control.

“The partnership with Zasso and its XPower solution is the next logical step after the Europe-wide RTK network and the GNSS Guidance and Machine Control options. Zasso and CNHi have both developed their environmental protection focus over the past year and this partnership is just the beginning for more,” said Maximilian Birle, Head of Product Management at CNHi.

Zasso’s CEO Dirk Vandenhirtz added, “It is a much welcomed and natural step for Zasso to partner with an equipment manufacturer. CNHi provides us with an unparalleled depth of distribution across Europe, to expand our solution. We are particularly excited to have been selected as one of the innovative technologies available through CNHi.”

Photo Credit: Zasso

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EU renews approval for maleic hydrazide

The European Union (EU) has renewed the approval of the plant growth regulator maleic hydrazide (MH), but industry experts warn that growers will have to take into account new regulatory requirements which will apply to all products containing MH.

According to new EU regulations, MH products are now required to contain lower levels of hydrazine to meet tightening restrictions on metabolites. Most significantly, under EU regulation (2017/1506) crops treated using MH products can no longer be fed to livestock. In the UK, the Chemicals Regulation Directorate (CRD) has confirmed that all crop protection products containing MH must now carry on the label the phrase ‘Do not feed to livestock’.

These restrictions apply to all MH products from the authorisation holders from 1 November 2018. However, MH products placed on the market before 1 November 2018 which do not comply with the new requirement (i.e. existing labelled stock) have been allowed a grace period of six months for sale, and a further 12 months for use.

CRD has also requested that authorization holders and industry partners develop and implement a stewardship program to ensure compliance with the restriction and the continued safe use of MH so that product registrations can be maintained.

Photo Credit: Pexels

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EU delays decision on approval of copper compounds

It has emerged that European countries are divided about the continued approval of copper products for crop protection, after its last extension in January.

Negotiations on the compounds are ongoing with reports suggesting the European Commission will put new proposals to member states later this month. However, despite being “of particular concern to public health or the environment,” according to the European Food Safety Authority (EFSA), and being candidates for substitution, materials such as copper sulphate are still widely used by organic farmers who say they have now suitable alternatives.

“Considering the information available in the framework of the confirmatory data, the risk assessment remains unchanged, and therefore the new information provided does not change the overall conclusion drawn during the renewal assessment of copper compounds,” EFSA said recently. There is particular concern about the effects on vineyard workers in particular.

European farmers’ association Copa Cogeca told journalists, “At this stage, we do not have concrete and robust solutions, leaving producers in a truly uncomfortable situation. We would suggest appropriate risk mitigation measures, as considered by the Commission. These could be considered as a transition, allowing for the management of all risks while leaving farmers with time to find adequate solutions.”

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Next generation of pesticides could be harmful to bees

Hopes for a new family of agricultural insecticides with little impact on non-target species, such as bees, may suffer a setback as researchers claim that they could pose similar risks to pollinating insects.

Sulfoximines have been promoted as the next generation of pest control chemicals, with a number of products already gaining approval around the world in countries including China, Canada and Australia. However, research published in the journal Naturesuggests that they could cause non-lethal effects in bees which may have unintended consequences.

One of the scientists behind the paper, Dr Ellouise Leadbeater of Royal Holloway, University of London, told the BBC: “Our study highlights that stressors that do not directly kill bees can still have damaging effects further down the line, because the health of the colony depends on the health of its workforce.”

Friends of the Earth pesticide campaigner Sandara Bell commented, “This study shows that replacing one harmful pesticide with another is not the solution to protecting our crops.” However, the NFU said that it was vital that farmers and growers had ‘an effective crop protection toolbox available to combat pests and allow them to produce food for the public.’

Photo Credit: Wikimedia Commons

The post Next generation of pesticides could be harmful to bees appeared first on Hort News on 30 August 2018.

Chance to learn about SCEPTREplus trials on lettuce root aphid

Growers have had the chance to assess the latest set of field trials forming part of AHDB Horticulture’s SCEPTREplus trials, this time looking at the control of lettuce root aphid.

The aim of the trial is to determine the efficacy of novel treatments for the control of the pest on lettuce. According the AHDB, “In recent years lettuce root aphids have been managed effectively by the neonicotinoid seed treatments used to control aphids on the foliage. The impending loss of neonicotinoids will increase the risk of lettuce root aphid infestations.”

The trial, which consists of 12 treatments including the insecticide-free control and the commercial standard of Cruiser seed treatment, was visited by growers on 8 August. The experimental products have been applied as spray, drench or phytodrip treatments across two sequential plantings which have been timed to target the migration of lettuce root aphids from overwintering sites on poplar.

The post Chance to learn about SCEPTREplus trials on lettuce root aphid appeared first on Hort News on 9 August 2018.

Syngenta launches Saltro fungicide seed treatment globally

Global ag. chem. company Syngenta has announced the global launch of a new SDHI-based fungicide seed treatment, with a view to getting the first approvals in international markets next year.

SALTRO™, which contains the novel active ingredient ADEPIDYN™, will initially be marked for the control of blackleg in canola (oilseed rape); Sudden Death Syndrome (SDS) in soybeans and Bakanae in rice, but following initial planned registrations in the United States, Canada and Australia, use of the chemical could be expanded to other crops and diseases.

Ioana Tudor, Global Head of Syngenta Seedcare, said, “We are excited to be adding SALTRO™ to our broad seed treatment portfolio. It will offer growers even more choices to control early seedling diseases to an unmatched level, by ensuring stand uniformity with strong and healthy plant growth right from the start.”

Photo Credit: Syngenta

The post Syngenta launches Saltro fungicide seed treatment globally appeared first on Hort News on 7 June 2018.

EU court upholds neonicotinoid ban

The European Court of Justice (ECJ) has upheld the EU’s almost total ban on the use of neonicotinoid insecticides after legal action was brought by agrochemical giants Bayer and Syngenta.

The ECJ ruling said the EU had correctly applied its “precautionary principle”, which allows restrictions on chemicals even when conclusive evidence of harm is lacking.

Both Bayer and Syngenta said they were disappointed by the decision, as did the UK’s Agricultural Industries Confederation (AIC). AIC said it supported the action brought by Bayer Crop Science and Syngenta as it ‘firmly believes in an approval system that is based on scientific evidence, independent review and an assessment of impacts, rather than politics’.

Hazel Doonan, head of AIC’s crop protection sector added: “Effective modern crop protection products are an essential part of meeting UK Government’s drive to raise productivity whilst enhancing the environment. If innovation is to take place, it relies on those involved in discovering and bringing new technology to the market, to have a clear regulatory framework within which to operate.”

In a separate ruling, the ECJ backed chemicals giant BASF in its complaint against restrictions on fipronil. The court said the European Commission had failed to do an impact assessment on fipronil, and that this “breached the precautionary principle.”

Photo Credit: Public domain pictures

The post EU court upholds neonicotinoid ban appeared first on Hort News on 23 May 2018.

Mechanical weed control shows promise in Canada

Faced with increasing numbers of herbicide-resistant weeds, Canadian farmers on the Prairies are tuning back to mechanical weed control, but rather than hoeing or cultivation, they are looking at clipping weeds to prevent seed formation.

A new project at the University of Saskatchewan is evaluating in-crop weed clipping as a method for weed control, with the objective of developing a strategy to reduce weed seed production: reducing the seed bank in the soil to reduce future infestations.

“The main applications for weed clipping are to lower populations of herbicide-resistant weeds that have escaped herbicide application, and to reduce weed populations in organic systems,” says Lena Syrovy, a research assistant at the Agronomy and Weed Ecology Lab at the University of Saskatchewan. She points out that the weed must be taller than the crop and produce most of its seeds above the crop canopy.

The research team is currently using a CombCut machine from European manufacturer Just Common Sense, but Syrovy added: “I’ve talked to growers who are modifying their swathers to clip weeds above the crop canopy.” Canadian manufacturer Bourgault has also recently launched its BTT weed clipper.

Photo Caption: Combcut machine in operation

Photo Credit: YouTube / Just Common Sense AB

The post Mechanical weed control shows promise in Canada appeared first on Hort News on 26 April 2018.