An Evaluation Of Weed Interference In Rice Grown On Hydromorphic Soils In West Africa
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An Evaluation Of Weed Interference In Rice Grown On Hydromorphic Soils In West Africa
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Author : Amadou Makhtar Diop
language : en
Publisher:
Release Date : 1988
An Evaluation Of Weed Interference In Rice Grown On Hydromorphic Soils In West Africa written by Amadou Makhtar Diop and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Plant competition categories.
Field, screenhouse, and laboratory experiments were conducted to study weed interference in rice grown on hydromorphic soils at the International Institute of Tropical Agriculture (IITA) at Ibadan, Nigeria. Rice and weeds emerged at the same time, 1 week after planting. Weed dry weight was significantly reduced when the crop was kept weed-free for at least 4 weeks after emergence. Initial weeding for 2 weeks was not effective, because weeds reappeared and competed actively with rice plants. Season-long weed competition reduced rice grain yield by 73%. Weed competition reduced the number of tillers and panicles of rice. The detrimental effect of early weed interference was not offset by keeping the crop weed-free later in the growing season. At 6 weeks after emergence, most of the weed species had reached flowering stage when rice was still producing tillers. Handweeding at 2 and 6 weeks was effective enough to reduce weed pressure. Rice seems to be most sensitive to weed interference during this period from the second to the sixth week.
Iita Annual Report 1988 89
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Author : International Institute of Tropical Agriculture
language : en
Publisher: IITA
Release Date : 1989*
Iita Annual Report 1988 89 written by International Institute of Tropical Agriculture and has been published by IITA this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989* with categories.
Dissertation Abstracts International
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Author :
language : en
Publisher:
Release Date : 1989
Dissertation Abstracts International written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Dissertations, Academic categories.
Iita Annual Report
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Author : International Institute of Tropical Agriculture
language : en
Publisher:
Release Date : 1988
Iita Annual Report written by International Institute of Tropical Agriculture and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Agriculture categories.
Iita Annual Report
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Author :
language : en
Publisher:
Release Date : 1988
Iita Annual Report written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Agriculture categories.
Cover Crops In West Africa
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Author : International Development Research Centre (Canada)
language : en
Publisher: IDRC
Release Date : 1998
Cover Crops In West Africa written by International Development Research Centre (Canada) and has been published by IDRC this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Cover crops categories.
Cover Crops in West Africa Contributing to Sustainable Agriculture
Weed Management In Rice
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Author : Bruce Archibald Auld
language : en
Publisher: Food & Agriculture Org.
Release Date : 1996
Weed Management In Rice written by Bruce Archibald Auld and has been published by Food & Agriculture Org. this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Gardening categories.
Recent Advances In Weed Management
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Author : Bhagirath S. Chauhan
language : en
Publisher: Springer
Release Date : 2014-07-10
Recent Advances In Weed Management written by Bhagirath S. Chauhan and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-07-10 with Science categories.
This volume addresses recent developments in weed science. These developments include conservation agriculture and conservation tillage, climate change, environmental concerns about the runoff of agrochemicals, resistance of weeds and crops to herbicides, and the need for a vastly improved understanding of weed ecology and herbicide use. The book provides details on harnessing knowledge of weed ecology to improve weed management in different crops and presents information on opportunities in weed management in different crops. Current management practices are also covered, along with guidance for selecting herbicides and using them effectively. Written by experts in the field and supplemented with instructive illustrations and tables, Recent Advances in Weed Management is an essential reference for agricultural specialists and researchers, government agents, extension specialists, and professionals throughout the agrochemical industry, as well as a foundation for advanced students taking courses in weed science.
Rice
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Author : Frank R. Moormann
language : en
Publisher:
Release Date : 1978
Rice written by Frank R. Moormann and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Plant-water relationships categories.
Chapter 1: Rice and its environment. Chapter 2: The geography of rice (oryza sativa L.). Chapter 3: The hidrology of rice-lands. Chapter 4: Classification of soils on which rice is Grown. Chapter 5: Soil-forming process in aquatic rice lands. Chapter 6: Soil and land properties that affect the growth of rice. Chapter 7: Elements for evaluation of land for rice growing.
Crop Production And Crop Protection
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Author : E.-C. Oerke
language : en
Publisher: Elsevier
Release Date : 2012-12-02
Crop Production And Crop Protection written by E.-C. Oerke and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-02 with Technology & Engineering categories.
The objective of this book is to provide information to be used as a basis for evaluating the fragile, shaky structure of global food production. The volume analyses the data by region and by intensity of cultivation; and furnishes information about the yield response, giving some indication of the health of the plants. It will be invaluable to all plant and crop scientists as well as to agriculturalists.