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Wash. Physiological Factors of Insects Which Determine Their 
Susceptibility To Systemic Insecticides. To determine why 
available systemic insecticides are highly effective against 
some sap feeding pests as aphids, mites, and certain leaf- 
hoppers, but fail to control other sucking insects such as 
scales and mealy bugs. 
Ent., Chem. 1228 
Wash. The Synthesis of Radioactive Labeled Systemic Insecti- 
cides and Their Plant Metabolic Products. To synthesize 
labeled systemic insecticides and their decomposition products 
for use in investigations of the problems involved in appli- 
cation of systemic insecticides to agricultural crops. 
Agr. Chem. 1229 
Wash. Action of Organic Phosphates on Enzymes. Study effects 
of organic phosphates on various mammalian, plant, and insect 
enzyme systems with emphasis on systemic organic phosphate 
insecticides. 
Chem., Ent. 1277 
W. Va. The Effect of Chemical Spray Schedules on the Quality 
and Quantity of Apples Produced. To determine (1) effect of 
various insecticides and fungicides and time of application 
on the quantity and quality of fruit produced, and (2) relative 
cumulative as well as current season's effect of various spray 
schedules on fruit set, yield, color, and finish. 
Ent., Pl. Path., Hort. 83 Coop. ARS 
Wis. Biological Activity of Insecticidal Derivatives. To 
attempt to develop systemic insecticides suited to the indi- 
vidual control conditions present in Wisconsin. 
Ent. 822 
