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Other Crops 



Ind, Control of Diseases of Peppermint and Spearmint * Study 



(l) control of important diseases of said plants through 

 disease resistance, (2) value of foliar and soil application 

 of chemicals in combination with other cult\iral practices for 

 control of Verticillium wilt, (3) value of new fungicides 

 for control of mint anthracnose, rust, mildew, and other 

 foliar and root diseases, (k) mechanisms of pathological 

 wilting of plants infected with Verticillium albo-atrum . 

 PI. Path., Bot. 842, Coop. ARS 



Mich. Investigations on the Verticillium Disease of Mint . 



To produce by breeding a new strain of pepperming resistant 

 to the Verticillium wilt disease of mint. 

 Bot., PI. Path. 37 



SUGAR CROPS 



Beets 



Colo. The Effects of Previous Cropping Practices on the 



Incidence of Root Diseases of Sugar Beets . To learn (l) 

 effects of previous cropping practices on development or 

 suppression of said diseases, (2) effect of crop residue 

 on soil microbiological populations, (3) value of control 

 measures for pre- and post -emergence damping-off with 

 application of crop residues to soil at time of planting. 

 PI. Path. 231 (W-38) 



N. Mex. Testing Sugar Beet Strains and Varieties for Curly-Top 



and Leaf Spot Resistanc'e l To (l) test strains and varieties 

 of Sugar Beets for yield, percentage sugar, size and shape of 

 beets, and resistajice to curly-top and leaf spot; (2) increase 

 in isolated plantings, seed of select mother roots which have 

 characters sought in objective 1; and (3) increase select seed 

 lots in isolated plantings to make seed available for commercial 

 plantings. 



Agron. 9, Coop. ARS 



