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Author: David V. Alford Publisher: HarperCollins UK ISBN: 0007413386 Category : Nature Languages : en Pages : 109
Book Description
Ever since man first cultivated plants and grew crops, insects, mites and other creatures have risen to prominence as pests, but it is only throughout the last two centuries that we have come to study them in any detail.
Author: David V. Alford Publisher: HarperCollins UK ISBN: 0007413386 Category : Nature Languages : en Pages : 109
Book Description
Ever since man first cultivated plants and grew crops, insects, mites and other creatures have risen to prominence as pests, but it is only throughout the last two centuries that we have come to study them in any detail.
Author: David V. Alford Publisher: Collins ISBN: 9780007426775 Category : Languages : en Pages :
Book Description
Ever since man first cultivated plants and grew crops, insects, mites and other creatures have risen to prominence as pests, but it is only throughout the last two centuries that we have come to study them in any detail. Whereas in the past, emphasis has mainly been placed on ways to protect cultivated plants from attack or damage, nowadays our over-reliance on pesticides has been replaced by a far more enlightened approach to plant protection. Though chemical pesticides still have a role to play, environmental aspects and non-chemical means of pest control have become equally, if not more, important. This requires a greater appreciation of ecosystems, coupled with a greater understanding of individual pests, including their habits and their role in the environment. Drawing on a lifetime of experience, David V. Alford provides a fascinating account of the natural history of the insects and mites that inhabit our farms and gardens, and feed on our cultivated plants. He shows how and why the different operations of cultivation affect their world, and why plant pests should not be viewed as different from other wildlife. Coverage of pests includes aliens, and although emphasis is placed mainly on arable and horticultural field crops, pests of protected crops - both edible and non-edible - are also included. Details of pest life cycles, status, distribution and the damage they cause are given, and natural enemies of pests are examined. The author also explores the impact of pesticides, climate change and evolving crop management practices.
Author: National Research Council Publisher: National Academies Press ISBN: 0309102898 Category : Technology & Engineering Languages : en Pages : 327
Book Description
Pollinators-insects, birds, bats, and other animals that carry pollen from the male to the female parts of flowers for plant reproduction-are an essential part of natural and agricultural ecosystems throughout North America. For example, most fruit, vegetable, and seed crops and some crops that provide fiber, drugs, and fuel depend on animals for pollination. This report provides evidence for the decline of some pollinator species in North America, including America's most important managed pollinator, the honey bee, as well as some butterflies, bats, and hummingbirds. For most managed and wild pollinator species, however, population trends have not been assessed because populations have not been monitored over time. In addition, for wild species with demonstrated declines, it is often difficult to determine the causes or consequences of their decline. This report outlines priorities for research and monitoring that are needed to improve information on the status of pollinators and establishes a framework for conservation and restoration of pollinator species and communities.
Author: David V. Alford
Author: David V. Alford
Author: David V. Alford
Author: Stefan Buczacki
Author: Stefan T. Buczacki
Author: National Research Council
Author: National Book League (Great Britain)
Author: 
Author: 
Author: National Library of Medicine (U.S.)
Author: National Library of Medicine (U.S.)