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Term. Corn Improvement , (l) Develop superior inbred lines, 



resistant to disease, insect pests, and of high quality. 

 (2^ Produce superior single and double cross hybrid 

 combinations from these and other inbred lines. (3) Learn 

 influence of cultural practices on yield and quality of 

 corn, with reference to production and maintenance of quality 

 seed stocks, {k) Study methodology of breeding, including 

 research in genetics and physiology. (5) In cooperation 

 with other departments and agencies, study diseases and 

 insects of corn and control methods. (6) Investigate crop 

 qualities with reference to yield and value. 

 Agron. 3^ Coop. ARS 



Tex. Studies of Hybrid Sorgh um Seed Produ ction. To devise a 



practical method or methods of producing hybrid seed of 

 sorghum in commercial quantities. 

 Agron. 6l0 Coop. ARS 



Tex. Investigations of the B iology and Control of Greenbugs, 



SpiderJMites and Oth er I nsects Attacking Small Gra ins . Learn 

 occurrence, distribution, seasonal history, host plants, and 

 their relationships, the influence of farm practices and 

 environmental factors on greenbug and other aphids; several 

 species of spider mites and other insects attacking small 

 grains. Search for plant resistance to attack by greenbugs, 

 mites, or other insects. Incorporate resistance to greenbugs 

 available in certain Oriental barley varieties and in a 

 selection of Dickinson wheat into varieties of barley and wheat 

 adapted to Texas conditions. When better resistance is found, 

 incorporate this into breeding program. Study basis and 

 causes of resistance. Determine effectiveness under field 

 and laboratory conditions of commercial and experimental 

 insecticides on control of said insects. 

 Ent., Agron. 1020 Coop. ARS 



