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1931

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Codling moth and peach worm investigations | Progress report on codling moth investigations

1931

Reed, H. J. (Harry James)

indiana control oriental fruit moth codling moth
National Agricultural Library - United States of America
Experiments for the control of the San Jose scale with lubricating-oil emulsions in the Pacific Northwest Full text

1931

Newcomer, E. J. (Erval Jackson),

oregon san jos⥠scale control washington (state) diseases and pests fruit
The Biodiversity Heritage Library - United Kingdom
Tree hoppers and their control in the orchards of the Pacific Northwest Full text

1931

Yothers, M. A.

membracidae fruit control treehoppers agricultural pests diseases and pests washington (state)
National Agricultural Library - United States of America
Lubricating-oil sprays for use on dormant fruit trees Full text

1931

Quaintance, A. L. (Altus Lacy) | Newcomer, E. J. (Erval Jackson) | Porter, B. A. (Bennet Allen)

spraying and dusting in agriculture control diseases and pests pesticides (general) fruit
National Agricultural Library - United States of America
The fruit insect situation, 1931 Full text

1931

Porter, B. A. (Bennet Allen)

orchards management spraying and dusting in agriculture control radio scripts united states diseases and pests fruit
National Agricultural Library - United States of America
Experiments for the control of the San Jose scale with lubricating-oil emulsions in the Pacific Northwest Full text

1931

Newcomer, E. J. (Erval Jackson) | Yothers, M. A.

oregon plant production (horticultural crops) control san josé scale washington (state) pests of plants (insects and other arthropods) diseases and pests ...
National Agricultural Library - United States of America