The Use of Grassed Buffer Strips to Remove Pesticides, Nitrate and Soluble Phosphorus Compounds from Runoff Water
✍ Scribed by Patty, Laurent; Réal, Benoît; Joël Gril, J.
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 333 KB
- Volume
- 49
- Category
- Article
- ISSN
- 1526-498X
No coin nor oath required. For personal study only.
✦ Synopsis
Experiments on grassed bu †er strips have been conducted since 1993 by ITCF (Institut Technique des Ce re ales et des Fourrages) at three research farms (La Jailliere, Bignan and Ple lo). Literature data and conclusions drawn from previous work with isoproturon and diÑufenican were conÐrmed in a range of soil and cropping conditions : grassed bu †er strips are e †ective in restricting pollutant transfer in runo † ; those with widths of 6, 12 and 18 m reduced runo † volume by 43 to 99É9%, suspended solids by 87 to 100%, lindane losses by 72 to 100% and loss of atrazine and its metabolites by 44 to 100%. More than 99% of isoproturon and 97% of diÑufenican residues in runo † were removed by bu †er strips. Nitrate and soluble phosphorus in runo † were reduced by 47 to 100% and by 22 to 89%, respectively. At La Jailliere, a rainfall simulator was used in 1995 to verify that bu †er strips are still e †ective in conditions of intense runo †. Investigation of the inÑuence of sowing direction during the 1994È95 cropping period at Bignan showed that sowing perpendicular to the slope seemed to be beneÐcial in reducing pesticide content in runo †.