Ala. 
Ariz. 
Ariz. 
Ark. 
Calif. 
-3- 
C. Deposits and Residues 
Effect of Insecticidal Residues on the Marketability of 
Farm Products. (1) Learn amounts of insecticidal residues on 
harvested farm products. (2) Develop procedures for removal of 
residues from certain products, especially when products contain 
residues in excess of those permitted by Miller Amendment. 
Zool. & Ent. 577 
Insecticide Residues: Their Nature and Persistence on 
Arizona Crops. (1) Learn nature and persistence of residues of 
insecticides commonly used for crop protection under weather 
conditions which prevail in state in such a manner that half-life 
and dissipation curves can be determined. (2) Assemble information 
on persistence and degradation of insecticide residues in state 
sufficient to insure that all official recommendations for chemical 
control of insects on agricultural crops will be made in compliance 
with the Miller Amendment to the Federal Food, Drug and Cosmetic 
Act. (3) Evaluate promising new insecticides in relation to possible 
residue problems under state conditions. (4) Make related studies 
of a more basic nature. 
Ent. 416 (W-45) Coop. ARS 
Post—Harvest Degradation of Insecticide Residues on Various 
Arizona Crops. (1) Learn nature and persistence of residues of 
insecticides used for crop protection under conditions occurr 
after harvest period; learn if any variation in normal harvest ~ 
procedure can accelerate a decrease in residual amount of insecti- 
cides. (2) Assemble information on post-harvest insecticide residue 
persistence curves to predict conditions under which over-tolerances 
of insecticide residues on crops at harvest may be reduced to accept- 
able levels before time of consumption. 
Ent. ES 480 
Determination of Effect of Insecticides on Plants and Soils, 
Including Bio-Assay of Residues. To determine bio-assay methods 
of determining insecticide residues on crops and in soil to evalu- 
ate effects of insecticides, solvents, diluents, and formulations 
on plant growth, harvest residues and after effects in the soil. 
Ent. 370 (S-22) 
Deposit of Insecticides and Analysis of Residues. Pursue: 
(1) use of known analytical methods with samples from experimental 
plots of field entomologists, (2) development or adaptation of 
methods for new pesticides, (3) study of degradation and (or) 
metabolic products to ascertain what substance(s) is most impor- 
tant in a residue. 
Ent. and Parasitol. 902-A,B 
