insecticide application Articles
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Pollinator effects on genotypically distinct soybean cytoplasmic male sterile lines
Poor seed-set limits potential for soybean hybrid seed production. The objective of this study was to evaluate effects of different pollinators on the rate of seed set in three soybean cytoplasmic male sterile (CMS) lines, JLCMS9A, JLCMS82A, and JLCMS89A. The following five treatments were applied under net room isolation-conditions: (i) insecticide application and release of alfalfa leafcutter ...
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Comparing population recovery after insecticide exposure for four aquatic invertebrate species using models of different complexity
Population models, in particular individual‐based models (IBM), are becoming increasingly important in chemical risk assessment. They can be used to assess recovery of spatially structured populations after chemical exposure that varies in time and space. We used an IBM coupled to a toxicokinetic‐toxicodynamic model, the threshold damage model (TDM), to assess recovery times for 4 aquatic ...
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The economic impacts of second generation Bt cotton in West Africa: empirical evidence from Burkina Faso
West Africa has been slow in adopting agricultural biotechnology. The most progressive stance has been taken by Burkina Faso, which began field testing Bt cotton in 2003. This paper reports the first three years of Bt cotton field trials, which found that Bt cotton increased cotton yields by an average of 20% and reduced insecticide applications by two-thirds. While the technical success of Bt ...
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Population‐level effects and recovery of aquatic invertebrates after multiple applications of an insecticide
Standard risk assessment of plant protection products (PPP) combines ‘worst‐case’ exposure scenarios with effect thresholds using assessment (safety) factors to account for uncertainties. If needed, risks can be addressed applying more realistic conditions at higher tiers, which refine exposure and/or effect assessments using additional data. However, it is not possible to investigate the wide ...
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Agrochemicals in field margins—assessing the impacts of herbicides, insecticides, and fertilizer on the common buttercup (Ranunculus acris)
The effects of herbicide, insecticide, and fertilizer inputs on the common buttercup Ranunculus acris in field margins were studied in an experimental field study. The test design allowed us to investigate the single and combined effects of repeated herbicide, insecticide, and fertilizer applications in successive growing seasons. To assess the effects of the agrochemical applications on R. ...
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Assessing the risk to green sturgeon from application of imidacloprid to control burrowing shrimp in Willapa Bay, Washington. I: Exposure characterization
Willapa Bay and Grays Harbor, Washington comprise the largest region of commercial oyster cultivation on the Pacific Coast. The activities of two species of burrowing shrimp impair growth and survival of oysters reared on the intertidal mudflats. In order to maintain viable harvests, the oyster growers have proposed controlling the shrimp by applying the insecticide imidacloprid onto harvested ...
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Insecticide and herbicide producer places heavy demands on rotary batch mixer
Indalva S.L. is Spain's largest toll manufacturer of insecticides and herbicides, producing approximately 5,500 to 7,700 tons/yr (5,000 to 7,000 m.t./yr) of some 30 different products for about 20 companies, nearly half of which are located in other countries. Established in 1967, the family-run company is also Spain's oldest producer of clay microgranules, which, along with quartz sand, are used ...
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Planting date and seed treatment effects on soybean in the northeastern United States
Soybean [Glycine max (L.) Merr.] production is limited in the northeastern United States so research on optimum planting date is scarce. Soybean production in this region may increase because of biodiesel demand so we initiated a 2-yr study in New York that compared soybean planting dates with and without seed-applied fungicide/insecticide treatments. Soybean planted in mid- compared with late ...
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Is the chronic Tier‐1 effect assessment approach for insecticides protective for aquatic ecosystems?
We investigated the appropriateness of several methods, including those recommended in the Aquatic Guidance Document of the European Food Safety Authority (EFSA), for the derivation of chronic Tier‐1 Regulatory Acceptable Concentrations (RACs) for insecticides and aquatic organisms. The insecticides represented different chemical classes (organophosphates, pyrethroids, benzoylureas, insect ...
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AminoA+ Update and Autumn Recommendations 2016
AminoA+ Update With harvest 2016 coming to a close and also the first year of our commercial sales of AminoA+ we thought we should review the results and also make some recommendations based on this years’ experience. Yields OSR and Winter Barley yields were reportedly generally 30% down on 2015 levels this is undoubtedly a results of lack of sunlight in the early summer. (Two ...
By AminoA Ltd
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Seed-applied insecticides inconsistently affect corn forage in continuous corn
Western corn rootworm (Diabrotica virgifera virgifera Le Conte) is the major insect pest in the corn phase of a corn (Zea mays L.) silage–perennial forage rotation. Dairy producers may prefer seed-applied instead of soil-applied insecticides for rootworm control because of ease of use and additional control of some other soil insect pests. The objective of the 2-yr NY field study was to evaluate ...
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Bats at risk? Bat activity and insecticide residue analysis of food items in an apple orchard
Although bats are reported as being threatened by pesticides, they are currently not considered in European Union pesticide risk assessments. The reason for that contradiction is probably related to the scarcity of information on bat activity in pesticide‐treated fields and the pesticide residues on their food items. The authors recorded bat activity and measured pesticide residues on ...
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Assessing the risk to green sturgeon from application of imidacloprid to control burrowing shrimp in Willapa Bay, Washington. II: Controlled exposure studies
The activities of two species of burrowing shrimp have a negative impact on the growth and survivalofoysters reared on intertidal mudflats in Willapa Bay and Grays Harbor, Washington. In order to maintain viable harvests, oyster growers proposed the application of the neonicotinoid insecticide imidacloprid onto harvested beds for the control of burrowing shrimp. In test applications, water ...
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Insecticide residues in Australian plague locusts (Chortoicetes terminifera Walker) after ultra‐low volume aerial application of the organophosphorus insecticide, fenitrothion
The need for locust control throughout eastern Australia during the spring of 2010 provided an opportunity to quantify residues of the organophosphorus insecticide, fenitrothion, on nymphs of the Australian plague locust, Chortoicetes terminifera Walker. Residues were collected across the different physiological states of locust nymphs observed following exposure to fenitrothion, namely live, ...
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B&C Seeks Applicants For Pesticide Registration Specialist Position
Bergeson & Campbell, P.C. (B&C®), is seeking a pesticide registration specialist to join our growing team of regulatory consultants, scientists, and policy experts. This position will be based in our Washington, D.C. office, although telework arrangements may be considered for the right candidate. Applicants should be experienced in all aspects of preparing, submitting, and ...
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What’s Happening to the Birds?
Following in Rachel Carson’s footsteps, a new generation of scientists investigates a new generation of pesticides. Christy Morrissey is driving her white pickup truck along Canada’s endless prairie highway, windows open, listening for birds. She points to the scatter of ponds glinting in the landscape, nestled among fields of canola that stretch as far as the eye can see. Formed by ...
By Ensia
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