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Ky. The Biology and Control of Mites and Armvworms Attacking 



Cereal and Forage Crops J To (1) determine mite species involved 

 in various crops and evaluate economic importance; (2) study 

 relationship of various mite population with reference to 

 insecticide (s) used; (3) study influence of mite predators or 

 other biological control factors on population; (4) evaluate 

 acaracides and make recommendations on control; (5) study causes 

 of armyworm outbreaks and possibilities for predicting infestations; 

 (6) study control methods and evaluate insecticides for effective 

 control; and (7) make residue studies of treated crops, 

 Bot., Ent. 454 (S-25) 



Ky. Biology and Control of Grasshoppers . To (1) develop and 



evaluate sprays and dusts as substitutes for poison bait as a 

 control measure for grasshoppers on forage crops and tobacco, 

 (2) forecast in what areas grasshopper damage may occur by 

 making fall surveys of egg abundance, and (3) study biology and 

 species distribution of grasshoppers in relation to outbreaks 

 of blister beetles. 

 Ent., Bot. 457 



Minn. Causes of Outbreaks of the Potato Leafhopper. Empoasca 



Fabae (Harris). Cooperate with North Central Regional Project on 

 "Migration of Potato Leafhopper and Its Causes." Obtain records 

 of 1st appearance in spring and abundance during growing season. 

 Study relation of ecological factors to populations. 

 Learn role of host plant relationships in population buildup 

 and migration. Ascertain causes of outbreaks and migrations so 

 as to predict abundance. Develop more effective control measures. 

 Ent., Zool., Hort. 1734 (NC-29) Coop. ARS 



Miss. Control of the Imported Fire Ant . (1) Test effectiveness of 



area treatments of granular and fertilizer formulations of dieldrin 

 and other insecticides as compared to sprays. (2) Learn effect of 

 timing and soil preparation of above treatments. (3) Try to find 

 some material to serve as an attractant for bait treatment for 

 control of pest. 

 Ent. HH-13 



