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Author: A. K. Pandey (Scientist)
Publisher:
ISBN: 9788183211970
Category : Aquatic plants
Languages : en
Pages : 212
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Book Description
Author: A. K. Pandey (Scientist)
Publisher:
ISBN: 9788183211970
Category : Aquatic plants
Languages : en
Pages : 212
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Book Description
Author: Ravindra Borade
Publisher: Scitus Academics LLC
ISBN: 9781681170459
Category : Amphibians
Languages : en
Pages : 0
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Book Description
Owing to their sensitivity to the changes in the environment amphibians are regarded as bio-indicators of aquatic and terrestrial ecosystem. Their obligatory aquatic lifestyle and permeable skin have made them greatly vulnerable to waterborne environmental chemical contaminants. They are among the most important natural enemies of many agricultural pests and serve as bio-indicators of agricultural ecosystem and used as typical test animals in evaluating the effects of chemicals on the aquatic and agricultural ecosystems. Therefore, any chemical in the water/soil may have direct influence on these organisms. Amphibian reproduction, development and metamorphosis specially involve cascades of events that are hormonal dependent. Organophosphorous chemicals although rapidly degradable, have an acute toxicity and are widely in use. Acephate being an organophosphate is a potential endocrine modulator. Atrazine a putative herbicide is an established developmental disrupter leading to the feminization of male gonads in fishes and amphibians. Synthetic pyrethroids are the most common insecticides used to control agricultural and indoor pests; cypermethrin belongs this class of compounds is an endocrine disrupter. Likewise, carbamates are fatal to insects by reversibly inactivating the enzyme acetylcholinesterase. Insect growth regulators eg, methoprene and novaluron are widely in use against fruit-borers to protect economic crops. As these chemicals are routinely used in agriculture, have an easy access into the natural aquatic system in which amphibian fauna may live and breed.
Author:
Publisher:
ISBN:
Category : Agricultural experiment stations
Languages : en
Pages : 914
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Book Description
Author: Gregory E Welbaum
Publisher: CABI
ISBN: 1780645341
Category : Science
Languages : en
Pages : 488
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Book Description
Successful vegetable production in a modern competitive market requires an understanding of many more factors than the biology of crops and the production techniques involved. This major new textbook brings the science and practice of vegetable production right up to date by addressing modern culture techniques and the recent challenges of consumer demand facing producers today. It introduces vegetable production from the perspective of producing high quality produce that satisfies the needs of the modern consumer. Beginning with the basics of how vegetables are grown using high and low input methods, including organic and sustainable production techniques, the book goes on to introduce and discuss many topics covered less comprehensively in older texts, including Good Agricultural Practices to improve quality, reduce biological contamination and secure food safety; water management; cropping systems; plasticulture; protected culture and mineral nutrition. Vegetable Production and Practices also introduces the use of molecular biology for genetic improvement of crops. Issues specific to individual vegetable crops are addressed by family, including their diseases, harvesting, quality attributes and other issues of increasing importance to consumers, including the role of vegetables in human health. Professor Gregory E. Welbaum has a long history of teaching successful courses in horticulture at Virginia Tech and other universities in the US and worldwide. Vegetable Production Practices has been specifically designed to accompany courses in vegetable crop production, so is ideally suited to inspire students in crop and horticultural sciences, as well as provide a useful reference for experienced practitioners.
Author: William Calero-Cáceres
Publisher: Frontiers Media SA
ISBN: 288974700X
Category : Science
Languages : en
Pages : 177
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Book Description
Author: Hawaii Agricultural Experiment Station
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 1124
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Book Description
Author: Achille Richard
Publisher:
ISBN:
Category : Botany
Languages : en
Pages : 604
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Book Description
Author: Sughosh Madhav
Publisher: John Wiley & Sons
ISBN: 1119870550
Category : Science
Languages : en
Pages : 436
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Book Description
Hydrogeochemistry of Aquatic Ecosystems Discover the geological foundation of global water supply, focusing on resource conservation and restoration Hydrogeochemistry explores the connections between the geology of a region and the chemical characteristics and quality of its water sources, including such factors as erosion, evaporation, and, increasingly, man-made activities. With the emergence of climate change as a major factor reshaping water quality and availability, the need to understand interactions between hydrochemistry and geology has never been greater. Hydrogeochemistry of Aquatic Ecosystems meets this need by offering foundational knowledge about the hydrochemistry of different types of aquatic systems, the nature of their interactions with various pollutants and geological processes, and the possibilities and dangers of human intervention. With a particular focus on aqueous resource conservation and restoration, this is a vital, timely guide to a potentially life-saving subject. Hydrogeochemistry of Aquatic Ecosystems readers will also find: Detailed treatment of water-sediment interactions, arsenic and fluoride enrichment, sand mining, and many other subjects Coverage throughout of solute acquisition processes, the carbon cycle, and nutrient geochemistry Case studies from Asia and Africa demonstrating both natural and anthropogenic hydrogeochemical interactions Hydrogeochemistry of Aquatic Ecosystems is indispensable for professionals and researchers in environmental science and environmental engineering, as well as scholars and advanced graduate students working on aquatic ecosystems or effects of climate change.
Author: Achille Richard
Publisher:
ISBN:
Category :
Languages : en
Pages : 720
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Book Description
Author: Mahesh Kumar (College administrator)
Publisher:
ISBN: 9789351119777
Category : Aquatic plants
Languages : en
Pages : 298
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Book Description
