Maine 
Maine 
Nebr. 
Ne YEE 
(Corne11) 
Nimes 
(Cornell) 
Niemi 
(Corne11) 
- 22 - 
Effects of Various Insecticides on Aphids Infecti 
Potatoes and on Their Parasites and Predators. (1) To 
learn aphidical value of chemicals in current use such as 
chiorthion, DDT, Diazinon, Guthion, Rotenone, Systox, 
and Toxaphene, and (2) their secondary effects on the 
natural enemies of the aphids. 
Ent. 101 Coop. ARS 
Entomogenous Fungi for Aphid Controle To learn 
(1) conditions necessary for the successful establishment 
of entomogenous fungi in the field, and the optimum 
conditions for spread; (2) influence of fungicides on 
establishment and spread. 
Ente 102 Coop. ARS 
Control of Potato Insect Pests. 1. Potato Flea Beetles. 
To (1) develop more effective, practical and economical 
methods of preventing losses caused by potato insects in 
Nebraska; (2) make biological and ecological studies of 
flea beetles and other important potato insects; 
(3) investigate certain fundamental biological and 
physiological aspects of rel@tionship of insects to potato 
plants with especial reference to development of resistant 
varieties. 
Ente 223-1 
Studies on the Control of Insects Attacking Potatoes. 
1. Control of Insects Attacking Potato Foliage. To study 
insect losses from potato foliage pests. 
Ente, Vege Crops 97-1 
Studies on the Control of Insects Attacking Potatoes. 
2. Control of Insects Attacking Potato Tubers. To determine 
practical methods for preventing wireworm damage. 
Ent e 97-2 
Studies on the Control of Insects Attacking Potatoes. 
kh. Control of Insect Vectors of Potato Virus Diseases. To 
apply control measures for insect vectors of potato virus 
diseases and determine the value in terms of disease free 
tubers. 
Ente, Pare Path. 97-4 
