1340 Tur VearrasBLle Ixpustry 1x New York State 
crop rotation. Do not put pea straw on land where peas are to be 
grown. The disease is introduced into fields with manure where 
pea vines are fed, but the disease germs are killed where the vines 
are used as silage. Use seed from disease-free crops. Blackish 
brown spots on seed are a sure indication of the disease. 
TOMATO 
Blight (Phytophthora infestans De Bary). The potato blight 
fungus occasionally attacks tomatoes, producing a similar blight. 
Spraying with bordeaux, 5-5-50, will check the disease and is 
advisable when it appears. Systematic spraying, as for potatoes, 
probably would not be profitable. 
Leaf Mold (Cladosporium fulvum Cke.). Yellow and dead 
areas, covered on the lower surface by an olivaceous mold, appear 
in the leaves. This is primarily a greenhouse disease. Thorough 
spraying with bordeaux, 5-5-50, every ten days is usually recom- 
mended. Spraying has, however, not proved generally satisfac- 
tory. The disease can be largely avoided by keeping the tomato 
foliage and the greenhouse atmosphere as dry as possible. 
Leaf Spot (Septoria lycopersici Speg.). Small angular dead 
spots occur in the leaves eventually causing them to dry and fall. 
Stems and fruits are also spotted. Three or four applications 
of bordeaux, 5-5-50, early in the season are said to control it. 
Blossom End Rot. The blossom ends of half grown and larger 
fruits become black and more or less sunken. The nature of the 
disease is not fully known. Various soil conditions, including 
a sudden decrease in water supply, favor it. Varieties are said 
to differ in susceptibility. 
