-3*- 



Minn. Studies on the Attractiveness of Alfalfa Clones to 



Pollinating Insects . To contribute to "better pollination 

 of alfalfa by (1) evaluating attractiveness of alfalfa 

 clones to different species of pollinating insects; 



(2) determining factors that affect attractiveness of alfalfa 

 flowers to pollinators, and (3) using this information to 

 explore possibilities of developing alfalfa varieties more 

 attractive to pollinating insects. 



Agron., PI. Gen., Ent., Zool. 172^ 



Mo. T he Spotted Alfalfa Aphid , (l) Study its biology 



and ecology under State conditions, (2) Learn nature and 

 extent of its damage to alfalfa under State conditions. 



(3) Develop control measures, including more effective 

 insecticides, value of flaming and cultural methods, and 

 use of biological agents. 



Eat. 309 



Nebr. Sweetclover Weevil Invest i gations . To (l) improve 



quality of sveetclover forage through development of 

 varieties resistant or tolerant to attack by sweet clover 

 weevils; (2) investigate diseases of sweetclover weevil and 

 effect of these diseases on sweetclover weevil populations; 

 and (3) study biology and ecology of sweetclover weevil, and 

 if suitable conditions appear, to test some of the newer 

 insecticides under Nebraska conditions. 

 Ent., Agron h&9 Coop. ARS 



Nebr. The Biolo gy, Ecolo gy and Co ntro l of the Spott ed 



Alfalfa Ap hid (Pte roca llidium Sp . ) . " Study (1) biology and 

 ecology of spotted alfalfa aphid; (2) effects of plants 

 grown in nutrient solutions on aphid development and honeydew 

 secretion. (3) Learn the nature and extent of damage to 

 alfalfa by alfalfa and pea aphids under various growing 

 conditions, (k) Search for resistant varieties. (5) Develop 

 control measures. 



Ent., Agron 521 Coop. ARS 



Nev. Breeding A lfalfa f or Resis tanc e to the Spot te d Al falfa 



Aphid . (lT Learn relative resistance of commonly used 

 varieties of alfalfa to spotted alfalfa aphid. (2) Evaluate 

 new varieties, synthetics, and introductions for resistance 

 to spotted alfalfa aphid. (3) Learn mode of inheritance of 

 resistance to aphid, (k) Develop varieties resistant to 

 spotted alfalfa aphid and otherwise adapted to intended areas. 

 S. Nev. Fid. Sta. Agron. 39 (W-40) Coop. ARS 

 (Also see Part 10, Nevada) 



