VEGETABLE AND FIELD CROPS 235 



fruit the spots are at first watery and translucent; later 

 the leaf wilts, and is soon reduced to a rotten mass. The 

 disease progresses so fast that a plant may be practically 

 destroyed in a few days. Immediate and thorough spray- 

 ing may be of service. 



Acremoniose {Acremonium^ sp.). — In this disease 

 shoots are stunted, fruits deformed, and leaves yellowed 

 and killed. Upon the lower leaf surfaces a delicate white, 

 glossy film like dried albumen is seen. This is in reality 

 a web of fungous threads. Plants that are attacked may 

 put forth new vigorous shoots to survive for a time, then 

 die. The disease has been known to reduce the yield 90 

 per cent. No treatment has been advocated. 



CucuRB Spraying' 



Planting should be at such distance as to facilitate 

 machine spraying ; that is, relatively close in the row, but 

 with the rows wider apart than is usual in most sections 

 of the country. In cultivating, the vines should be induced 

 to spread along the row, and by the use of a vine tutner a 

 one-foot open alley should be maintained throughout the 

 season for the wheels of the sprayer. 



Geared sprayers with proper length of axles to cover 

 one row may be used, and three rows may be sprayed at 

 one time. Particular attention must be given to reaching 

 the undersides of the leaves with the spray. Spray first 

 when the vines begin to run, using Bordeaux mixture 



' Humphrey, J. E., Mass. Agr. Exp. Sta. Rpt., pp. 227-228, January, 

 1892. 



' Orton, W. A., U.S. Dept. Agr. Farmers' Bui. 231, 1908. 



