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La. To Conduct Studies on the Ecological Factors 



Responsible for Destructive Outbreaks of Cotton Insects . 

 To obtain information on ecological factors responsible 

 for destructive outbreaks of cotton insects and to develop 

 methods for accurately forecasting such outbreaks. 

 Ent. 606 Coop. ARS 



La. To Study Those Factors Which Affect Cotton Fiber 



Quality ! To learn (1) fiber length, length uniformity, 

 fineness and strength of fibers of varieties and advanced 

 strains; (2) effects of different methods of harvesting 

 cotton on fiber length, length uniformity, fineness and 

 strength of fibers; (3) effect of certain insects, spider 

 mite, and nematode infestations, upon fibers. 

 Agron., Ent., Home Econ. 895 



La. Breeding Cotton for Resistance to Major Diseases and 



Insects . (1) Develop new varieties having combined 

 resistance to rootknot nematodes and Fusarium wilt. 

 (2) Evaluate commercial varieties of cotton recently 

 released by Agricultural Experiment Stations and private 

 companies for resistance to major cotton diseases found 

 in State, (3) Screen genetically divergent types of cotton 

 for resistance to boll weevil, boll-worm, aphids, spider 

 mites, Fusarium wilt, rootknot nematodes, seedling disease 

 due to Rhi zoctonia and boll rot to be used in breeding new 

 varieties with resistance to these pests and diseases. 

 Agron. 9^9 Coop. ARS 



Miss. A Study of Thri ps on Cotto n. Learn (l) economic 



importance of thrips, (2)" effect of existing control 

 recommendations on fruiting cycle; start of blooming, 

 rate of blooming, length of blooming period, rate of 

 setting of fruit, length of fruiting period; (3) varietal 

 differences and their effect on fruiting with relation to 

 thrip injury; (k) interrelation of thrips infestation on 

 cotton to that on other host plants; (5) (Conditional 

 oojective) economic importance of thrips in relation to actual 

 potential production and in relation to control of other 

 cotton pests. 



Ent., Agron HH-12 



