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Mo* Annual Testing and Breeding of Winter Barley Varieties 



and Strains for Yield, Winter Hardiness, and Disease Resistance, 

 with Special Emphasis on the Smut Diseases (1954) . To (1) breed 

 better varieties adapted to Missouri conditions and to test such 

 for hardiness, (2) discover varieties and selections resistant to 

 disease and insects and superior in agronomic qualities and to 

 evaluate such for use as feed, and (3) analyze the genetics govern- 

 ing the inheritance of characters associated with productivity, 

 winter hardiness, disease and insect resistance. 

 Field Crops 90 Coop. ARS 



Mo. Breeding and Evaluating New Strains of Soft Wheat with Resistance 



to Leaf Rust, Loose Smut, and Hessian Fly . To breed an improved 

 strain of soft wheat for Missouri, combining leaf rust, loose smut 

 and Hessian fly resistance in a high yielding strain with good 

 quality, using extensively N fertilizers and working for an early, 

 short, stiff-strawed variety; and comparing any new strains origi- 

 nating from this project with standard varieties to find relative 

 merits, and quality of grain by tests to learn its commercial use. 

 Field Crops 202-a Coop. ARS 



Mo. Corn Insects, with Special Emphasis on Soil Insects, the 



Corn Earworm, the Southwestern Corn Borer and Occasional Pests . 

 (1) Study soil insects and arthropods with emphasis on distribution, 

 life cycle, and destructiveness of wireworms, rootworms, cutworms, 

 flea beetles, mites, Collembola and other arthropods. (2) Search 

 for corn plasm resistant to Southwestern corn borer. (3) Breed 

 field corn for resistance to corn earworm. (4) Uniform National 

 Insecticide Control Test on corn earworm. (5) Study biology and 

 control of occasional pests of corn that have not been of importance. 

 Ent 269 Coop. ARS 



Mo. The European Corn Borer with Special Emphasis on the Biology , 



Parasite and Chemical Control and Importance of the Pest in Missouri . 

 Study factors Influencing borer population as weather, and biotic 

 controlling factors, and follow annual changes in abundance of 

 borer and compare with other states. Collect and study parasites 

 of borer. Evaluate insecticide control on early, mid-season and 

 late planted corn. Collect data to learn actual reduction in yield 

 of corn in Missouri brought about by typical low infestations of 

 1st and 2nd generation borers. 



Ent., Field Crops 270 (NC-20) Coop. ARS 



Mo. Investigations of the Biology. Ecology and Control of Grass- 



hoppers Injurious to Corn and Related Crops . Study (1) effect of 

 weather, biological factors, cultural practices, chemical control, 

 soil types, soil fertility etc. on insect population; (2) host plant 

 preferences of economic species of grasshoppers; (3) habitat pre- 

 ferences of important crop-pasture species of grasshoppers; (4) 

 seasonal history and habits of each of economic species of hoppers; 

 (5) chemical control of hoppers in crop-pasture farming to learn 

 proper timing and application of insecticides and to learn feasibility 



of their use. 



Ent. 286 Coop. ARS 



