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Subjects insect pests Remove constraint insect pests: insect pests Subjects spraying Remove constraint spraying: spraying Subjects trap crops Remove constraint trap crops: trap crops Subjects control methods Remove constraint control methods: control methods

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1. The bollworm or corn earworm

Author:: Bishopp, F. C. (Fred Corry) , 1884-1970
Subject:: life cycle (organisms) , insect pests , seasonal development , tillage , control methods , cultural control , spraying , trap crops , Helicoverpa zea , Heliothis armigera Control
Physical description:: 16 p. : ill., 1 map ; 23 cm.
Additional Author(s):: Bishopp, F. C. (Fred Corry) , 1884-1970
Collection:: Organic Roots Collection
Series:: Farmers' bulletin