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FIBER AND OIL CROPS 



Cotton 



Ariz. Control of Phymatotrichum (Cotton or Texas) Root Rot 

 in Irrigated Lands * To secure fundamental and practical 

 information leading to development of control measures 

 for Phymatotrichum root rot in irrigated lands. 

 PI. Path. 42 



Ariz. yerticillium Wilt of Cotton. To study the complete or 



partial control of Verticillium wilt of cotton c 

 PI. Path. 256, Coop. USDA 



Ariz. Breeding Cotton for Disease and Insect Resistance and 

 for Plant Types Suitable for Mechanical Harvesting . To 



(1) evaluate resistance of present breeding stocks to local 

 diseases and insects and ability for mechanical harvesting, 



(2) introduce stocks from other localities having similar 

 problems, (3) cooperate in production of high yielding 

 varieties of good spinning quality suitable for mechanical 

 harvesting and (4) provide adequate initial seed stocks of 

 desirable strains for distribution to growers. 



PI. Breeding, PI. Path. 278 (S-l) Coop. USDA 



Ariz. Influence of Crop Residues on Incidence of Phymatotrichum 



Root Rot . (1) Assemble data on role of specific crop residues 

 on incidence of Phjrmatotrichum root rot from laboratory, green- 

 house, and field experiments to learn: influence of specific 

 crop residues on Phymatotrichiim root rot, and if underlying 

 causes of effects are primarily biological and, if so, the 

 nature. 



PI. Path 417 (W-38) 



