-55- 



Minn. Biology and Control of Injurious Insects on Sugar Beets 



in Minnesota . (1) Evaluate injury caused by injurious insects 

 on sugar beets. (2) Identify species involved & make observa- 

 tions on their biologies. (3) Study ecological conditions 

 under which injury occurs. (4) Study control methods in co- 

 operation with American Crystal Sugar Co. 

 Ent. & Econ. Zool. 1736 



Mont. Development by Testing and Selection of Varieties of Sugar 



Beets Resistant to Aphanomyces. Rhizoctonia, and Fusarium Root 

 Rots . To (1) test resistance of new varieties of sugar beets 

 to Aphanomyces . Rhizoctonia . & Fusarium root rots; & (2) learn 

 if resistance is correlated to certain environmental factors 

 such as temperature, percentage of moisture in soil, soil type, 

 &. soil nutrients, & learn reaction of various strains of these 

 organisms on beet varieties. 

 Bot., Bact. 916 



Mont. Improvement of Soil Fertility for Sugar Beet Production 



Through Organic Matter and Fertilizer Treatments . To determine 

 (1) value of organic matter in improving soil fertility for 

 sugar beets thru comparisons with commercial nitrogen fertil- 

 izer; (2) comparative value of green manure, barnyard manure, 

 & N fertilizer in improving soil fertility for sugar beet pro- 

 duction; & (3) relative value of sweet clover & alfalfa as green 

 manure crops under different systems of irrigation. 

 Agron. 944 



Mont. Nature of the Influence of Crop Residues on Fungus-Induced 



Root Diseases of Sugar Beets Caused by Aphanomyces Cochlioides 

 Drechs . (1) Evaluate chemical, physical, & biological effects 

 of crop residues & associated factors on development or suppres- 

 sion of root rot of sugar beets caused by Aphanomyces cochlioi- 

 des . (2) Study influence of soil temperature, moisture, & aera- 

 tion on effects of residues in developing or suppressing root 

 rot of sugar beets. 



Bot. & Bact. 981 (W-38) Coop. USDA (Also see Part 17, Sec- 

 tion a. ) 



Nebr. The Etiology and Control of Soil-Borne Diseases of Sugar 



Beets . To determine (1) identity of the organisms causing 

 pre- and post-emergence damping-off of seedlings, root rots, 

 wilt, and storage rots following these diseases, and effect of 

 cropping systems, cultural practices including seed treatments, 

 soil types, and environmental factors on occurrence of these 

 diseases; and (2) factors for resistance, and discovery of re- 

 sistant parent stocks. 



PI. Path. 314 Coop. USDA 



