Past, present and future considerations in risk assessment when using GMO's : workshop proceedings Leeuwenhorst Congress Centre Noordwijkerhout, the Netherlands, March 5-6, 1998.

Vries, Gert E. de:

ISBN 10: 0792359941 / ISBN 13: 9780792359944

Published by Bilthoven : Commission Genetic Modification, 1999

About this Item

160 pages Book in very good condition. Sprache: Englisch Gewicht in Gramm: 530.

Seller Inventory # 451327

Bibliographic Details

• Title: Past, present and future considerations in risk assessment when using GMO's : workshop proceedings Leeuwenhorst Congress Centre Noordwijkerhout, the Netherlands, March 5-6, 1998.
• Publisher: Bilthoven : Commission Genetic Modification
• Publication Date: 1999
• Language: English
• ISBN 10: 0792359941
• ISBN 13: 9780792359944
• Weight: 530 grams
• Seller catalogs:
  • AA Varia

About this title

Synopsis

Global pesticide use is currently estimated at approximately 2. 5 billion kg per year (Pimentel eta/. , 1998). To be effective, pesticides need to persist for a certain period of time. However, the longer their persistence, the greater the potential for transport of a fraction of the amount applied away from the target area. Pesticides are dispersed in the environment by water currents, wind, or biota. Pesticides can directly contaminate ground and surface waters by leaching, surface run-off and drift. Pesticides can also enter the atmosphere during application by evaporation and drift of small spray droplets, that remain airborne. Following application, pesticides may volatilise from the crop or the soil. Finally, wind erosion can cause soil particles and dust loaded with pesticides to enter the atmosphere. The extent to which pesticides enter the air compartment is dependent upon many factors: the properties of the substance in question (e. g. vapour pressure), the amount used, the method of application, the formulation, the weather conditions (such as wind speed, temperature, humidity), the nature of the crop and soil characteristics. Measurements at application sites reveal that sometimes more than half of the amount applied is lost into the atmosphere within a few days (Spencer and Cliath, 1990; Taylor and Spencer; 1990; Van den Berg et a/. , this issue).