- 7- 



Iowa The Development of Improved Corn Hybrids * To (l) produce 



superior inbred lines of corn for different sections of Iowa 

 and the Corn Belt; (2) evaluate lines for combining ability, 

 resistance to or tolerance of major corn insects, resistance 

 to important plant pathogens, and nutritional and industrial 

 characteristics; (3) compare breeding procedures as to relative 

 efficiency in obtaining desired characteristics to the maximum; 

 (4) use existing data and new data to find most efficient 

 procedures for conducting trials for yield or other desirable 

 agronomic characters; and (5) conduct needed basic studies to 

 facilitate attainment of above objectives* 



Agron., Bot., PI. Path*, Chem., Ent. 1140 Coop* ARS 



Iowa The Effect of Time of Planting, Weather Conditions and 



Character of Plant Growth on Corn Borer Populations . To 

 (1) study differences in resistance or susceptibility between 

 widely different strains of field corn planted at widely 

 different dates and for both generations of borer; (2) study 

 effect of planting date on both first and second generation 

 borer accumulation; and (3) measure damage done per borer, by 

 first and second generation borers, and by total borers, under 

 different infestation levels, and for different strains of field 

 corn. 



Ent. 1193 (NC-20) Coop. ARS 



Kans. Hessian Fly and Other Insects Attacking the Growing Wheat 



Plant Above Ground . To (1) study insect infestation and abundance 

 of wheat fields in relation to climatic conditions and farm prac- 

 tices. (2) collect and identify the insects, and study life 

 histories of insects, affecting the living wheat plant above 

 ground. (3) Measure injury done and where necessary workout 

 control measures for each species. As opportunities are avail- 

 able, this will include the testing of new insecticides. 

 Ent. 283 Coop. ARS 



Kans. The Corn Earworm and Other Insects . To (l) study infestation 



of corn earworm and other insects as to abundance in fields as 

 related to climatic conditions and farm practices, (2) determine 

 life history and habits of injurious insects in corn fields, and 

 (3) study control measures, cultural and insecticidal, for 

 various pests. 

 Ent. 284 



Kans. Biology and Control of Insects Affecting Sorghums . Learn 



behavior, type and extent of injury, and control of insects attack- 

 ing sorghum. 

 Ent. 432 



