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International news in brief – May/June 2015

| July 20, 2015
  • Philipinnes: Clearing coconut logs to prevent rhinoceros beetle infestation

Government crews are rushing to clear about 4m coconut trees in provinces damaged by super-typhoon Yolanda (international name Haiyan) in order to prevent the rhinoceros beetle from taking hold and attacking surviving trees. The Philippine Coconut Authority (PCA) reported that at the end of April, 9.15 million uprooted and sheared coconut trees have been turned into lumber out of the 13 million target under the revised coconut debris management plan. About 15 million trees were totally damaged. Other pest management methods will be applied in remote areas not covered by the debris clearing operations.

The rhinoceros beetle population usually starts to increase six months after a coconut tree is uprooted or sheared. Rotten coconut trees serve as the beetle’s breeding ground. If blown away, they will attack remaining surviving trees. The rhinoceros beetle was present in coconut farms even before the super-typhoon, but potential growth in the population because of the surge in felled trees could be very damaging. The government, with support from the United Nations Development Program, has deployed 2,500 chainsaws to the provinces of Leyte, Samar and Eastern Samar.

The threat starts when the beetle reaches two months and feeds on the palm shoot, leaving telltale marks on the new leaves. The best way to prevent infestation is to remove the beetle’s potential breeding grounds in farms through massive clearing activity. As part of the long-term recovery plan, the PCA has planted 1.9 million coconut seedlings over 19,000 hectares, benefitting more than 10,000 farmers. Around 130,000 hectares are being targeted for replanting in five years.„
Source: http://bit.ly/1HQsGSq

  • India: Mumbai’s mosquito breeding detectors ready to fight dengue

In January, the Brihanmumbai Municipal Corporation (BMC) designed a plan to enlist citizen volunteers to tackle dengue. The BMC sent out appeal letters to 4,674 housing societies and corporate offices in January. 702 parties responded and 500 citizen mosquito breeding detectors were appointed to carry the BMC’s message to their localities and neighbourhoods.

Dharmendra Vyas is one such citizen. In April, the local pest control officers conducted a training programme for over 30 people. “We were trained to observe how the mosquito that spreads dengue appears, when does it bite, and where does it lay eggs. We were asked to look for mosquito larvae in clean stagnant water and asked to dispose it regularly to prevent hatching of eggs. Also, dry eggs of dengue-causing female Aedes aegypti mosquitoes last for a year and may hatch when they get access to water,” said Vyas. Since then, Vyas and his friends, who were trained by the BMC, have conducted presentations at 35 housing societies and corporate offices to spread awareness.

Dengue is transmitted by the female Aaedes aegypti mosquito who can produce up to 1000 eggs during a lifetime. Eggs are laid on damp surfaces in areas likely to temporarily flood, such as tree holes and man-made containers like barrels, drums, jars, pots, buckets, flower vases, plant saucers, tanks, discarded bottles, tins, tyres and water coolers. Last year, 8,400 people were diagnosed with dengue in Maharashtra (a state in Western India and is the nation’s and also the world’s second-most populous sub-national entity) of which 126 died.
„Source: http://bit.ly/1EC9si8

  • UK: PelGar International acquires pesticide manufacturer Agropharm

Outgoing Agropharm Ltd shareholders (left to right) Mr Bryan Shand, Sir Roger Jones and Susan Amass with acquiring shareholders (right to left) Mrs Paola Capel-Williams and Dr Gareth Capel-Williams, managing director, PelGar International

Outgoing Agropharm Ltd shareholders (left to right) Mr Bryan Shand, Sir Roger Jones and Susan Amass with acquiring shareholders (right to left) Mrs Paola Capel-Williams and Dr Gareth Capel-Williams, managing director, PelGar International

On 7th May, PelGar International, based in Alton in Hampshire announced the acquisition of pesticide manufacturing company Agropharm Ltd., based in Penn, Buckinghamshire. Agropharm also has manufacturing and packing facilities in Telford, Shropshire.

“Agropharm offers a wide range of quality products and marketing solutions for the retail, professional pest control, public health and crop protection markets,” explains Gareth Capel-Williams, managing director, PelGar International. “This acquisition provides an excellent synergy with the PelGar product range and customerbase. In particular, Agropharm’s natural pyrethrum range will help to boost our market share in the international pest control and agricultural sectors.”

Both companies have extensiveinternational business with very limited overlap of territory and distribution. The Agropharm products will expand PelGar’s portfolio in the home and garden and crop protection markets, as well as allowing PelGar to introduce their range of highly effective rodenticides and insecticides to Agropharm’s existing customers.

Both companies will, for the time being, continue to operate independently without disruption to the existing business. With minimal cross-over of products in the pest control and agricultural sectors initial consolidation will be negligible and PelGar will be looking to expand its base both in the UK and internationally in the coming months and years.
For further information contact: Nic Blaszkowicz, Global Marketing Manager, Nicholas@pelgar.co.uk

  • France: New Certis Europe IPM R&D Laboratory

As part of its further strategic business development in the area of soft technology Certis Europe has, since 1 April 2015, relocated its R&D team to new facilities at the Japan Agro Services (JAS) site near Nimes in France. In the new facilities, the R&D team will have access to a wide range of laboratory equipment and opportunities for conducting field trials. The IPM R&D laboratory will focus primarily on development of biopesticides and natural compounds, and their inclusion into IPM programmes, while retaining close links with beneficial insect and mite production at BCP.

The day-to-day activities of the laboratory will be supervised by Audun Midthassel (R&D Technician) under the management of Ian Baxter (Product Development Manager). In addition to closer collaboration and experience sharing with the team at JAS, the new location offers improved support for key customers in IPM, reinforced by the relocation to the region of Amélie Boullenger Midthassel (IPM Support Manager). Working closely with the BCP technical team, she will keep abreast of latest developments and field trials work, to the benefit of Certis’ IPM customers across Europe.
For more information contact:Kevin Price, Market Development Manager, Certis Europe, price@certiseurope.co.uk, wwwcertiseurope.com.

  • USA: New Servsuite modules

Service Pro has introduced a new module for their software ServSuite, called Quick Search. With a completely redesigned interface, the new module provides users with a quicker and simpler way of getting the most relevant customer information on screen in an instant. Quick Search adds two very important new features. The Account Smart Portal allows users to easily see account details: notes, balance, payment history, service history, future service dates and more, in an easy-to-read format. In the second feature connects with an office VOIP phone system as long as the user PBX (system/software) allows a feature called URL Pop or Screen Pop. Whenever a customer calls the office and provided the number exists in the database, ServSuite will capture the caller ID opening the newly designed Account Smart Portal to view the customer account details, thus eliminating manually searching for the customer.

In addition, Service Pro have released a GPS module that can be installed in company vehicles, and provide information on vehicle movement. Once the vehicle gets moving, the unit sends realtime updates to the ServSuite software in a set interval. This way, the user is able to track and receive information on the speed they are going with, or the route they are taking. Business managers are then able to look at the Driving History and compare previously plotted driving routes to the actually driven ones. They are able to get reports on speed limits, ignition activity (idle, on, off), etc. Having this sort of control over company vehicles has been known to make companies eligible for lower insurance premiums with some providers.
For more information contact: sales@servsuite.net

  • Australia: Pest control gel kills 24 swallows

Twenty-four swallows died on the Sunshine Coast after being smothered by a clear glue-like gel that is used to try to discourage bigger birds. The swallows weighed only 10 grams each. The event was discovered by Australia Zoo veterinarians when they were called to a property at Perigian on Tuesday where 32 swallows were caught up in the gel. Australia Zoo’s treating veterinarian, Dr Claude Lacasse, who tried to save the birds, said it was the first time she had seen the gel. Australia Zoo’s vet staff took four hours to wash the gel from the 32 tiny swallows.

However 24 were so exhausted and smothered by the gel that they did not make it through the night. The remaining eight swallows were re-released back in the Perigian area. Householders and businesses use the gel to deter big birds for roosting. It is not recommended for birds smaller than pigeons. Dr Lacasse said it appeared the gel had been used excessively.
Source: http://bit.ly/1bCH58h

  •  UK: Russell IPM Foundation achieves £100,000 for charity

Gwenda Hughes-Consort to Chairman, Catriona Tait-Leukaemia and Lymphoma research regional manager, Diana Al-Zaidi-Director and Ray Hughes-Chairman of Flintshire

Gwenda Hughes-Consort to Chairman, Catriona Tait-Leukaemia and Lymphoma research regional manager, Diana Al-Zaidi-Director and Ray Hughes-Chairman of Flintshire

British business Russell IPM held a celebration day mid-May to announce that they had successfully reached their £100,000 target for Leukaemia and Lymphoma research. The company and its friends were joined by local MP Mark Tami, Flintshire’s newly elected Chairman Ray Hughes and Catriona Tait from the Leukaemia and Lymphoma research foundation who applauded their achievement. Catriona Tait gave thanks to the generosity and dedication of the company directors Diana and Shakir Al-Zaidi and their team, who have shown monumental fundraising efforts to support Leukaemia and Lymphoma Research in the UK.

In 2010 when it all began, the foundation’s message was “We know that we have a mountain to climb. But together we can make it. Together we can make a difference.” And now that mountain has been successfully climbed, the foundation can celebrate in supporting cancer research and potentially making a real difference to the 28,500 people diagnosed with blood cancer every year.

The appeal all began after Shakir and Diana Al-Zaidi’s grandson, Callum, was diagnosed with leukaemia at a young age. The company set up the foundation after watching Callum’s inspirational ordeal and were moved to raise awareness of leukaemia and lymphoma, support research and to help those affected by it in the future.
www.russellipm.net

  • US: Brandenburg expand US presence

Brandenburg NA recently moved their offices and warehouse to a much larger facility in Earth City, MO, USA, in order to better facilitate the growth of the business and to fulfil customer needs more effectively by providing a quicker response time. Brandenburg NA is the North American operating arm for Brandenburg UK Ltd, the manufacturer of the World’s leading range of insect light traps and chemical-free pest management solutions. Brandenburg UK Ltd manufactures and supplies products to 129 countries across the world and has operations in the US, UK, Europe, India and the Far East.
Brandenburg NA first opened its offices and warehouse in the USA in 2011 and stocks and supplies products for USA, Canada and the LATAM markets.
Learn more about Brandenburg and their products by visiting: www.b-one.com.

  • UK: Servest buys Pest Patrol

Facilities management service provider Servest, a leading provider, employing more than 16,000 people over 6,000 sites across the UK, has acquired the pest control business Pest Patrol Limited as part of its growth and diversification strategy. Servest identified Pest Patrol, the Sawston-based company that provides pest services throughout the UK, as being a good strategic fit for the existing business. Rob Legge, Group Chief Executive Officer UK and Europe at Servest, said: “The acquisition is part of our growth strategy to become one of the top five FM service providers in the UK. I’m delighted to be able to offer new and existing customers a wider range of services through the new combined entity.”

Pest Patrol was founded over eight years ago and provides a range of pest, bird, fly and rodent prevention services. The company also provides insecticide treatments, cleaning and hygiene services as well as providing customers with pest control products. The company’s customer base is varied across food manufacturing, hospitality, warehousing and distribution, healthcare, local authority, housing associations and office and commercial clients.

Peter Wordingham, the managing director of Pest Patrol, and the senior management team, will remain in place to drive the strategy and growth of Servest’s pest control division.

Based in London, Leeds, Watford, Manchester, Tamworth and Edinburgh, and with a corporate office in Bury St Edmunds, Servest is 73 per cent owned by Servest South Africa with the remainder owned by the UK management team.
For more information, visit: www.servest.com.

  • US: EPA approves biological control for the weed privet

The US Environmental Protection Authority (EPA) has approved an application to release privet lace bug (Leptophya hospita) as a biological control agent for the weed privet (Ligustrum spp.). The applicant is the Waikato Regional Council, on behalf of the National Biocontrol Collective, which represents 12 regional councils/unitary authorities and the Department of Conservation (DOC).

Privet is considered to be a significant weed, and is too abundant in many regions to be controlled by conventional methods. It is proposed the privet lace bug be introduced to feed on the leaves of the privet weed. The aim is to reduce the growth and productivity of this invasive weed. The EPA invited submissions on the application on 20 January 2015 and received eight submissions, which are available on our website. Six submissions were in support of the application and a further two submissions neither supported nor opposed the application. None of the submitters requested to be heard on their submissions, so no hearing was held for this application.

The Decision-making Committee has approved the application without controls in accordance with the Hazardous Substances and New Organisms Act. The EPA’s role is to decide on applications for new organisms under the Hazardous Substances and New Organisms Act. We assess the benefits, risks and costs of releasing new organisms to safeguard people and the environment.

  • UK: Sumitomo mark World Malaria Day

On World Malaria Day (25 April, 2015) public health stakeholders looked to celebrate the gains and progress that had been made and to renew and strengthen their efforts to defeat malaria. Sumitomo Chemical currently has five novel products in the WHOPES process (http://www.who.int/whopes/en/), including the first new mode of action adulticide for 40 years, which has been shown to be highly effective against pyrethroid resistant mosquitoes.

The company believes that its new products can make a significant impact on malaria control, particularly as countries face the challenge of insecticide resistance and adopt integrated vector control methods in the progression towards malaria elimination and the ultimate longer term goal of malaria eradication.

As the vector control community looks towards the ultimate goal of eradication, the search for new active ingredients will be key. To this end, Sumitomo Chemical is also pleased to announce that its search and analysis of new chemistry for malaria control in collaboration with IVCC (http://www.ivcc.com/) is now in its advanced stages.

Sumitomo Chemical’s Director and Senior Managing Executive Officer, Ray Nishimoto, said: ‘In this the last World Malaria Day before the Millennium Development Goals end, the malaria community should rightly congratulate itself on the achievements made, but also look to respond to the challenges that still face us in the fight against malaria. Along with our industry partners we believe the world is as well equipped as ever to overcome those remaining challenges.”
For more information, visits: www.sumivector.com

  • Australia:  Research finds mechanism of herbicide resistance

University of Adelaide researchers have identified the mechanism behind the resistance of the cereal weed brome grass to the widely used herbicide glyphosate. Published online ahead of print in the journal Pest Management Science, the researchers report that it is the first weed species in Australia that has shown this mechanism of resistance.

“Great brome (Bromus diandrus) is a significant weed of both crops and pastures across the southern and western Australian cereal belts, causing contamination, yield reductions and damage to meat and livestock,” says postdoctoral researcher Dr Jenna Malone, from the School of Agriculture, Food and Wine at the University’s Waite campus. “Glyphosate is the most widely used and versatile herbicide in the world and one of the most important herbicides for weed management in Australian agriculture. Loss of glyphosate for brome grass control would cause serious issues for farmers.”

Resistance to glyphosate has been found in recent years in two different populations of great brome. Both populations showed the same mechanism of resistance, called gene amplification, in which the resistant plant produces numbers of copies of the gene responsible for the enzyme EPSPS which is targeted by glyphosate. More enzyme production overcomes the herbicide action.

“It shows yet another way that plants are developing resistance to herbicides,” says Dr Malone. “Until now there have been just three key mechanisms for resistance. Unfortunately it means that there will be even more cases of plants developing resistance to herbicides.”
For more information contact Dr Jenna Malone :jenna.malone@adelaide.edu.au.

  • US: Insect mating behaviour helps drone research

Pheromones are used in crop and public health to monitor for the presence of insect pests.   They work by replicating the natural scent released by females to attract males.  Male moths locate females by navigating along the latter’s pheromone or odour plume, often flying hundreds of meters to do so. Two strategies are involved to accomplish this:males must find the outer envelope of the pheromone plume, and then head upwind.

Ring Cardé, Professor of entomology at UC Riverside, working on an experiment involving a wind tunnel. Credit: Carrie Rosema.

Ring Cardé, Professor of entomology at UC Riverside, working on an experiment involving a wind tunnel. Credit: Carrie Rosema.

Now, entomologists have shown that such insect behavior has implications for airborne robots or drones that ply the sky searching for signature odours. The entomologists modelled plumes’ dispersal and insects’ flight strategies. Their model was based in part on the observed behavior of the gypsy moth in forests and in experiments in wind tunnels. The use of computer simulations allowed testing of many conditions that could not be observed directly in the field. Thesimulations suggest that optimal strategies for robotic vehicles – airborne or ground-based – programmed to contact an odor plume need not involve the detection of wind flow in setting a foraging path. One application of the work may be in using airborne drones to find sources of odours from pollutants. Such drones could mimic natural orientation paths of insectssearching for odors. The researchers simulated batches of 100 virtual moths that search simultaneously and independently for an odor plume in aboundless area that replicates natural wind conditions.
For more information visit: http://icb.oxfordjournals.org/content/early/2015/05/15/icb.icv036.abstract

  • Dominican Republic: Govt. issues 60-day deadline to label all pest control products

The Consumer Protection Institute (ProConsumidor) director Altagracia Paulino together with Public Health, Environment and Agriculture officials; representatives from the National Urban Pest Management Association (ANMPU); Dominican Republic’s Cleaner Production Center (CPMLRD) and the Crop Production Products Manufacturers and Importers Association (AFIPA) issued a Declaration of Committment with a 60 day deadline, to raiseawareness on the safe use of pesticides and force producers to placelegible labels in Spanish on pest control products used in homes,industry, businesses and other facilities.

The Declaration calls for professionalism and control of commercial pest control services indoors,surroundings, homes, industry, commerce and others uses, to preserve the environment and protect the population’s health.
Source: http://bit.ly/1SIz4ju

  • Australia: Help sought to control camels

The Department of Primary Industries (DPI) is asking landholders, residents and travellers in western NSW for their assistance in controlling feral camels in the region. DPI Invasive Species Officer Troy Crittle said earlier this year the NSW Government introduced a feral camel pest control order (PCO) for the Western Division to support feral camel control programs, as well as to regulate the keeping of camels.

“The new PCO assists Western Local Land Services to work with landholders to control any reported feral camels in this region,” Mr Crittle said. “If left uncontrolled, the feral camel population in western NSW is projected to increase at about 8 to 10% each year, causing more widespread damage and destruction,” Mr Crittle said. “Commercial use isn’t currently a viable option for feral camels in NSW given the small number of animals and the distances over which they are spread. “Anyone wanting to keep camels in the NSW Western Division must have a licence.”

Following the introduction of the PCO, DPI co-ordinated a successful aerial cull of a localised feral camel population in Bourke and Cobar shires, in partnership with NSW National Parks and Wildlife Service and Western Local Land Services. Troy Crittle said local landholders provided excellent support for the control program and their ongoing involvement in feral camel reporting and control was essential. “DPI and Western Local Land Services are currently following up on reports of feral camels in other parts of western NSW, but we need the ongoing assistance of landholders and travellers to report any feral camel sightings in this region,” Mr Crittle said.

  • Kenya: New strategy to defeat striga weed impoverishing rural Kenya farmers

A new farming practice introduced by International Center of Insect Physiology and Ecology (ICIPE), is helping Kenyan farmers to eliminate Striga hermonthica, (Witch Weed), which affects cereal crops in many parts of Africa and which can reduce crop production by 100% and has a dormancy of over 15 years.

The technology, identified as a push-pull system, is a form of ecological farming used to control parasitic weeds and insects that damage crops. Professor Zeyaur Khan, the project director at ICIPE, said that the technology involves the use of Napier grass and Desmodium, a leguminous herb, which is intercropped with other food crops such as maize, sorghum or rice.

In the push-pull system, Napier grass is planted on the edges of the farm while the Desmodium is intercropped with the maize. The Desmodium is planted in between rows of maize and the crop produces a smell that stem borers do not like, pushing them away from the maize plants. According to Khan, the stem borer moths then lay eggs in Napier grass but since the grass does not allow the larvae to develop into adults, they end up dying.

He said chemicals released by Desmodium roots also control the weed, by inducing abortive germination, and providing very effective control of the noxious weed. Maize is the main staple in Kenya, with the country producing an average of 35 million bags annually and consuming 3.6 million every month. The persistence of striga in Western Kenya has become a threat to food security as farmers are losing tonnes of maize to the weed.
Source: http://bit.ly/1HZFvsz

  • US: EPA Takes Strong Steps to Better Protect Bees from Pesticides

To further support President Obama’s Federal Pollinator Strategy, the U.S. Environmental Protection Agency is proposing additional restrictions on the use of acutely toxic pesticides during times when bees are most likely to be present. Applications of acutely toxic pesticides would be prohibited when flowers are in bloom when bees are brought to farms for pollination services. While the proposed restrictions focus on managed bees, EPA believes that these measures will also protect native bees and other pollinators that are in and around treatment areas.

The EPA is also encouraging states and tribes to reduce pesticide exposure by developing pollinator protection plans. The purpose of these plans is to support pollinator health by facilitating local communication among beekeepers, growers and others and to put into place tailored measures to protect pollinators.

Growers routinely contract with honey bee keepers to bring in bees to pollinate their crops that require insect pollination. Bees are typically present during the period the crops are in bloom. Application of pesticides during this period can significantly affect the health of bees.
Read about other actions EPA is taking to protect pollinators: http://www2.epa.gov/pollinator-protection/epa-actions-protect-pollinators

  • India: New battle against dengue

With monsoons round the corner, the civic authorities in Mumbai have already begun taking precautionary measures to battle dengue. Last year, the city experienced 927 confirmed and nearly 4,000 suspected cases of dengue. As many as 85% of patients last year were from high-rise buildings, and 60% of the breeding spots were in multi-storeyed buildings. Circulars have been issued to over 7,000 housing societies, asking them to appoint persons as mosquitoes breeding detectors who will inspect the societies periodically to identify breeding spots. As part of the 10-point plan, the Brihanmumbai Municipal Corporation (BMC), has set up a 24-hour cell to monitor cases. Hospitals have been told to provide information about every dengue patient to the cell, which will forward the data to insecticide officers who will then survey the patient’s housing society and neighbouring areas to locate breeding spots.

After being refused entry by some housing societies and home owners last year, the BMC will now seek help of the police to enter premises if the society or individuals decline permission. Those who refuse face legal action. At constructions sites across the city, the pest control department has already begun spraying insecticides to check mosquito breeding; the shanties of labourers at such sites are also being treated. The authorities have warned of strict action against societies if, despite repeated warnings, breeding spots are detected in their premises. Civic bosses have also cautioned pest control officers of every ward that they will be dealt with sternly should cases of dengue be found increasing in their wards.
Source: http://bit.ly/1FPEin3

  • Kenya: Natural solutions for pest control

Current figures on the extent of damage caused by plant pests in Kenya vary between 10-16% losses in global crop production. Although chemical pesticides are available, concerns have been raised about their impact on both human and environmental health. At a plant north of the capital Nairobi, Kenya Biologics has developed bioinsecticides that promise zero harm to the environment and food.

One of its products is called Helitec, and is used to fight the African bollworm pest, common in many crops including maize, vegetables, flowers and cotton. The company sells a wide range of non-toxic pesticides. Its main target customers are farmers engaged in the export business, and those in organic farming. Kenya Biologics is building a new production plant 10 times larger than the existing one in readiness to export its Helitec product to other African markets. It has started registration in 14 countries where it will export to, including Morocco, Mali,Tanzania and Ethiopia and most ofthe francophone region.
Source: http://bit.ly/1LXxBR8

  • Croatia: No-pesticide technique has boosted production 20 percent

The Food and Agriculture Organization (FAO) and the International Atomic Energy Agency (IAEA), collaborate through a joint division dedicated to nuclear techniques in food and agriculture. The division, with its specialized laboratory, has been developing the sterile insect technique. The laboratory in Seibendorf, Austria, has improved the method originally developed in the 1950s, with genetic sexing methods.

It also developed and harmonized international quality control guidelines for sterile insects. In Croatia, this technique has already borne fruit: benefits to local growers from a pilot program launched in 2010 amount to a 20% annual increase in the production. This was promising enough to scale up efforts in a regional project, where 12 countries in the Balkans and eastern Mediterranean combine their experience, technical specialists and laboratories with a state-of-the-art fly handling and release facility in Croatia.

Bordered by the Adriatic Sea on one side and mountains on all other sides, the citrus orchards of the Neretva Valley are hampered by the prevalence of the Mediterranean fruit fly or “medfly”. These factors make the valley a perfect spot for applying the technology. 90% of the local population, scattered across 12,000 hectares, are involved in the citrus industry, producing mainly mandarins (80%) for export markets. Early-maturing mandarins offer growers a niche with prime access to the market.
Source: http://bit.ly/1Fmo94V

  • US: Rotating Or Mixing – which is the best Way to slow herbicide resistance

A Pest Management Science study by researchers at the University of Illinois and USDA-ARS, looking at glyphosate-resistant waterhemp, has provided evidence that points to management practices as the driving force behind herbicide resistance, and that herbicide mixing, as opposed to herbicide rotation, is the most effective tool in managing resistance. Co-author Pat Tranel notes that this is not the first time researchers have presented evidence that herbicide rotation is not the best resistance management strategy but this experiment was done in a more ‘real-life’ fashion.

During the study, the researchers evaluated glyphosate-resistance incidences, as well as landscape, soil, weed, and farm-management data from 105 central Illinois grain farms, including almost 500 site-years of herbicide application records. Having this data, collected between 2004 and 2010, helped the researchers identify relationships between past herbicide use and current glyphosate-resistance occurrences.

After collecting the management data, sampling waterhemp from the fields, and screening seeds from the field for resistance back in their greenhouses, the researchers analyzed that data for management factors most associated with resistance. Overall the researchers examined 66 variables related to environment, soil, landscape, weed community, and weed management.

The occurrence of glyphosate-resistant waterhemp was greatest in fields where glyphosate had been used in over 75 percent of the seasons included in the analysis, where fewer mechanisms of action were used each year, and where herbicide rotation occurred annually. Simply rotating herbicide mechanisms of action actually increased the frequency of resistance. Farmers who were using multiple herbicides per application were least likely to have resistance.
Source: http://bit.ly/1I2vjCs

Published in International Pest Control – May/June 2015 issue

 

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Category: International Pest News, news in brief