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Spray Drift Simulations to Estimate the Exposure of Residents to Pesticides Close to a Sprayed Field
Downwind deposits and airborne emissions of spray drift after a pesticide application on flower bulb fields were computed using the IDEFICS spray drift model. The simulations closely followed real spray applications that took place on selected flower bulb fields. Spray deposits on the ground down to 5 m off the downwind field edge were determined. Vertical airborne emission profiles were determined at the same distance. 14 cases were studied; the airborne emission results of these are to be used as input for a spray and vapour dispersion model.
Spray Drift Deposition on Off-field Zones Next to Field Crops Using Drift Reducing Technologies in the Netherlands
The Dutch government’s policy (Environmental Activities Decree, Sustainable Crop Protection 2) has set goals for the reduction of the emission of plant protection products into the environment. Data are needed on actual spray drift and drift reducing measures when spraying a plant protection product to support decision making on the authorisation of the use of plant protection products in different crop types (Board for the Authorisation of Plant Protection Products and Biocides, Ctgb). The WUR Drift Calculator (WDC) is introduced in 2021 for use in the authorisation procedure of plant protection products (Ctgb) from January 2022 onwards. The WDC is based on updated spray drift data from s...
Potato in progress
This book contains the proceedings of the Potato 2005 conference, held in Emmeloord, The Netherlands. This conference offered a platform to a diverse group of stakeholders in the potato industry to learn what science has to offer. At the same time it created an environment for scientists to learn what drives the industry in the rapidly changing world of the potato. The contributions in this book reflect the rapid developments both in the industry and in science. The nutritional aspects of the potato tuber are discussed as well as the volatile consumer moods in saturated or new markets. Latest developments in potato breeding and seed potato production are highlighted and these contributions u...
Optimising Pesticide Use
Optimising Pesticide Use brings together the wide range of scientific disciplines necessary to ensure best practice through monitoring what is used and improving how it is formulated and applied. The book provides: An in-depth exploration of pesticide optimisation from the view point of industry and research scientist A case study on the development of a new range of active chemistries from bacteria A discussion of complementary pest control methods This text will provide essential information to workers in the pesticide industry and regulatory community who need to be aware of current thinking and advancements in the optimal use of pesticidal compounds and systems, as well as environmental organisations and aid development organisations.
Spray Drift for the Assessment of Exposure of Aquatic Organisms to Plant Protection Products in the Netherlands
As part of the Dutch authorisation procedure for pesticides an assessment of the effects on aquatic organisms in surface water adjacent to agricultural fields is required. This in turn requires an exposure assessment for these surface waters. So far, in the current Dutch authorisation procedure spray drift is the only source of exposure. For this reason, a new exposure scenario was developed, which includes also input by drainage and atmospheric deposition. The endpoint of the exposure assessment is the 90th percentile of the annual maximum concentration in all field ditches alongside fruit and avenue nursery-tree fields. In this report, the state-of-the-art of the spray drift data is described for orchard spraying and avenuenursery-tree spraying. The methodology of using a matrix structure is discussed for the assessment of spray drift deposition combining classes of Drift Reducing Technology (DRT) and width of crop free zones for sideways and upward sprayed crops (fruit crops and avenue nursery-trees). Key words: spray drift, air -blast sprayer, Drift Reduction Technology, ISO22866, surface water, crop free zone, orchard spraying, avenue nursery tree spraying.
