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- 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
- 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
- Author:
- Roberts, John W. (John William) , 1882- , Dunegan, John C. (John Clymer) , 1898-
- Subject:
- Brown rot of fruit , Peach scab , plant diseases and disorders , tree fruits , fungal diseases of plants , brown-rot fungi , scab diseases , plant rots , control methods , fungicides , spraying , arsenicals , arsenates , application timing
- Physical description:
- 14 p. : ill. ; 23 cm.
- Additional Author(s):
- Roberts, John W. (John William) , 1882-Dunegan, John C. (John Clymer) , 1898-
- Collection:
- Organic Roots Collection
- Series:
- Farmers' bulletin
