Gardening Without PoisonsHoughton Mifflin, 1971 - 318 pages Gardening Without Poisons shows us how to work with, not against, the balance of nature. We can lessen or eliminate damage to crops by using natural predators, natural insecticides, organic fertilizers and soil conditioners, and many other methods not harmful to the environment or ourselves. This comprehensive and practical book tells us how and why natural control methods are both effective and important. |
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Page 213
... sterilize males , large numbers of them could be released to overwhelm native males . The sterilized ones would compete and mate with native females , but little or no reproduction would result . The men reasoned that such a program ...
... sterilize males , large numbers of them could be released to overwhelm native males . The sterilized ones would compete and mate with native females , but little or no reproduction would result . The men reasoned that such a program ...
Page 214
... sterilized male screwworms , with additional tests in Georgia and Alabama . More than 70 percent mortality was achieved , which was higher than averages with insecticidal treatment . However , fertile flies managed to invade from ...
... sterilized male screwworms , with additional tests in Georgia and Alabama . More than 70 percent mortality was achieved , which was higher than averages with insecticidal treatment . However , fertile flies managed to invade from ...
Page 224
... sterilized fruit went to many other markets . The success of this venture also assisted work on the Mexican fruit fly which had long been a problem in Texas . Sterilization procedure was introduced there in the 1937-38 season and re ...
... sterilized fruit went to many other markets . The success of this venture also assisted work on the Mexican fruit fly which had long been a problem in Texas . Sterilization procedure was introduced there in the 1937-38 season and re ...
Contents
Prologue | 1 |
The Realities of Biology | 7 |
The Vital Role of Insects | 13 |
Copyright | |
17 other sections not shown
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agricultural animals aphids apple areas attack attract Bacillus Thuringiensis bait bean beneficial insects biological control birds botanical cabbage caterpillars chemical citrus codling moth compost corn borer cotton cover crops cutworms damage destroy developed dust earthworms effective eggs Entomol entomologists experiments Farm farmers feed field flies Forest fungi fungus garden grass ground grow growers growth grubs Henry Doubleday humus infestation insect control insect pests insecticides Japanese beetle Jour kill Klamath weed lady beetles larvae leaves manure marigolds materials meal methods mites mosquito mulch mycorrhizal natural nematodes nitrogen nutrients orchards organic matter Pages parasites pathogens percent pesticides plant diseases poison populations potato practices predators produce protection reduce Release repel Research resistance rotenone screwworm seedlings seeds shrubs soil fertility species spider spores spray sterilized Tagetes minuta tests tion tobacco tomato toxic traps trichogramma U.S. Dept variety vegetation vigor virus weevils worms Yearbook of Agric