sh es 
I. INSECTICIDES 
A. General 
Ala. Toxicology of Insecticides. Learn in laboratory and 
greenhouse the susceptibility or resistance of economic insect 
pests to insecticides. (2) Study factors involved in natural 
and acquired resistance of insects to insecticides. (3) Learn 
accumulation and persistence of insecticides in soil as a result 
of insect control measures and the effects of insecticides on 
crops. (4) Learn phytoxicity of insecticides to agricultural 
crops. (5) Relationships between method and time of applying 
various insecticides to crop plants and insecticidal residues 
present at harvest. 
Zool-Ent. 112 
Ga. Toxicity of Insecticides to Various Insects Under Controlled 
Conditions with Emphasis on Field Crops Insects. (1) Establish 
median lethal dosages of various insecticides to the species and 
strains of insect pests of economic importance. (2) Learn if any 
of these insects have developed resistance; (3) if so, work out 
other control programs. 
Ent. 216 
Minn. So tins Studies on Insect Cuticle, Muscle, and Other 
Systems. To (1) complete studies underway on cuticle structure 
and penetration, (2) amass data on temperature coefficients to 
evaluate significance of temperature effects on overall processes 
such as respiration, (3) initiate studies on physiology of repro- 
duction, and (4) study nature of so-called intracellular symbionts 
of insects. 
Ent. 1708 Coop. HEW-Natl. Inst. Health, USDA 
N. H. Factors Affecting the Action of Acaricides. To determine 
(1) relation of chemical structure and Savareyr properties of 
material to potency of miticide; and (2) what factors may influ- 
ence action of acaricides, more particularly such factors as 
climatic, physiological age, and development of resistance to 
Ovotran, Neotran, organic phosphates and other acaricides. 
Ent. 43 
N. Ae Testing New Organic Pesticides Under New Hampshire Condi- 
tions. Test promising new insecticides and acaricides under 
State conditions to learn their effectiveness in control of 
insects and mites affecting orchard and small fruits, vegetables, 
and man and domestic animals. 
Ent. 122 
