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S. Dak. The Breeding of Superior Field Corn Hybrids , (l) Develop 

 corn hybrids better adapted for environmental conditions of 

 state; improve yield levels, and lodging resistance as it 

 pertains to root and stalk weakness; work for "better drought 

 resistant hybrids; incorporate disease resistance, especially 

 against root rot organisms; "breed for insect resistance as 

 corn borer; incorporate male sterile in hybrids available to 

 public. (2) Develop new inbreds which, when used with each 

 other or existing inbreds from various stations, will accom- 

 plish objectives in No. 1. (3) Study aspects of plant 

 breeding for improving hybrids as: methods of selection and 

 mating systems, aspects of heterosis, work on methods for 

 developing drought-resistant inbreds, and methods for develop- 

 ment of inbred lines thru use of chemicals and radiation. 

 (k) Cooperate with experiment stations and USDA. 

 PI. Path., Agron. 66 



S. Dak. TheJS urop ean Co rn Bor er in South Dako t a. Its Contr ol, 

 Lif e Hi st ory, and Distribution . To (1) determine extent 

 and degree of infestation of the insect, (2) study life 

 history under South Dakota conditions, (3) study parasites 

 and predators with a view toward introduction of new species 

 into the state for biological control of the pest, and (k) on 

 the basis of above information determine best combination of 

 control measures. 



Ent., Zool. 187 (NC-20) 



S. Dak. Investigations of the Corn Ro ot worm Complex (Diabrotica 



S PP) in South Dakota, The ir Economic Importance, Ifffe Histories^ 

 D Tstribution and Control . To (1) learn extent and degree of 

 infestation of corn rootworms in South Dakota; (2^ learn 

 economic importance of the insects to the corn growers of the 

 state; (3) study life histories under South Dakota conditions; 

 and (k) learn best combinations of control measures with which 

 to combat corn rootworms in South* Dakota. 

 Ent., Zool. 2Vf 



Tenn. Breeding for Improvement in Wheat Varieties to Include 



Resistance to Disease, He s sian Fly, and Changes in Morpho- 

 logical Characters . To (X) use present Tennessee lines to 

 add softness and other desirable milling qualities — earliness 

 of maturity, short and stiff straw, smooth or awnless heads, 

 resistance to black chaff, scab, and take-all; (2) incorporate 

 resistance to Hessian fly; (3) select for feed and pasture 

 types in crosses; and (k) test soft wheats for disease 

 resistance in addition to those now available. 

 PI. Path. 136 Coop. ARS 



