- 20 -° 
S=-22 Pesticide Residues - Determinations, Sampling, Effects on 
Plants and Soils. Standardization and application of chemical and/ 
or biological methods of pesticide residue analysis. Standardiza- 
tion and application of field sampling procedures used in pesticide 
residue analysis. Evaluation of the effects of pesticide residues 
on plant growth, plant products and soil. 
Cooperating stations and agencies: Ark. I-C, Fla. I-C, 
Gae I-C, Lae I-D, Ne C. I-C, Pe Fe I-C, Se Ce I-C, Tenn. 
I-C, Tex. I-D, Va. I-C and ARS. 
W-L5 Pesticide Residues: Their Nature and Determination in 
Relation to the Production and Marketability of Agricultural 
Products. To collect, coordinate and make available information 
concerning residues of pesticides such as insecticides, acaricides, 
fungicides, bactericides, and herbicides, which are of agricultural, 
importance in the western states. To develop standard procedures 
for determining pesticide residues, including reliable methods for 
sampling, extraction, purification, and analysis. 
Cooperating stations and agencies: Ariz., Calif., Colo., Wash., 
(all contributing projects in I-C), and ARS. 
