Tenn. 
Calif. 
Calif. 
-=lle 
Control of Coffee Insect Pests. To determine (1) most 
effective and economic insecticides for control of coffee 
leaf miner Leucoptera coffeella Guerin-Menneville and the 
hormiguilla Myrmelachista ambigua var remulorum Wheeler; and 
(2) best spraying schedule, mas rates, and methods for 
application of insecticide that prove to be of value in 
control of the leaf miner and hormiguilla. 
Ent. 72 Coope ARS 
A Study of the Life History and Control of the 
Strawberry Leaf Roller, ses Se and Some Related 
Aspects of Strawberry In Make a study of 
the life history and control of the strawberry leaf roller 
under Tennessee conditions. (2) Learn if possible factors 
leading to outbreaks of the leaf roller. (3) Investigate 
the parasite complex. 
Ente 101 
E. Sub-Tropical Fruit Insects 
Control of Olive Scale in Northern California. (1) To 
perfect a chemical control method using a less hazardous 
material than parathion and to obtain data for registration 
of material. (2) Learn relations of spray coverage to 
effectiveness of control and possibility that heavy metal 
chelates of Zn, Fe, and Mn may retard development of olive 
scale, and aid in working out a combination or transition 
from chemical to biological control when the biological 
control becomes sufficiently developed. 
Ent. 1204 
Laboratory and Field Studies of Petroleum Oils for 
Insecticide Use. To provide specifications for spray oils 
better suited for use in control of insect and mite pests 
of citrus than oils currently available by ascertaining 
properties of petroleum type hydrocarbons related (a) to 
maximum insecticide efficiency against insect and mite pests 
of citrus, and (b) to minimum deleterious effects on the 
physiological processes of citrus. 
Ent. 1229 
