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Collections Organic Roots Collection Remove constraint Organic Roots Collection: Organic Roots Collection Subjects spraying Remove constraint spraying: spraying Subjects leaf blotch Remove constraint leaf blotch: leaf blotch
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1. Apple blotch

Author:
Roberts, John W. (John William) , 1882- , Pierce, Leslie.
Subject:
life cycle (organisms) , apples , orchards , fruit trees , plant diseases and disorders , fungal diseases of plants , leaf blotch , spraying , varietal resistance , sulfur , copper sulfate , Apple blotch , Apples Diseases and pests
Physical description:
12 p. : ill. ; 23 cm.
Additional Author(s):
Roberts, John W. (John William) , 1882-Pierce, Leslie.
Collection:
Organic Roots Collection
Series:
Farmers' bulletin

2. Apple scab

Author:
Roberts, John W. (John William) , 1882-
Subject:
Apple scab , Apples Diseases and pests , apples , orchards , fruit trees , plant diseases and disorders , fungal diseases of plants , scab diseases , fungicides , spraying , dusting , spraying equipment , leaf spotting , frogeye leaf spot , leaf blotch , varietal resistance , cultural control , sulfur
Physical description:
12 p. : ill. ; 23 cm.
Additional Author(s):
Roberts, John W. (John William) , 1882-
Collection:
Organic Roots Collection
Series:
Farmers' bulletin