Weeding Of Paddy Fields In West Africa And Catologue Of The Main Weeds
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Weeding Of Paddy Fields In West Africa And Catalogue Of The Main Weeds
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Author : INSTITUT DE RECHERCHES AGRONOMIQUES TROPICALES ET DES CULTURES VIVRIERES (França).
language : en
Publisher:
Release Date : 1978
Weeding Of Paddy Fields In West Africa And Catalogue Of The Main Weeds written by INSTITUT DE RECHERCHES AGRONOMIQUES TROPICALES ET DES CULTURES VIVRIERES (França). and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with categories.
Preface; Foreword; Weed control; Principal herbicides; Treatment; Spraying equipment; Weed flora; Main weeds in the West Africa rice fields; Characteristics of the main weeds noxious to rice in West Africa; Vocabulary.
Weeding Of Paddy Fields In West Africa And Catalogue Of The Main Weeds
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Author : Institut de recherches agronomiques tropicales et des cultures vivrières (France)
language : en
Publisher:
Release Date : 1978
Weeding Of Paddy Fields In West Africa And Catalogue Of The Main Weeds written by Institut de recherches agronomiques tropicales et des cultures vivrières (France) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Rice categories.
Preface; Foreword; Weed control; Principal herbicides; Treatment; Spraying equipment; Weed flora; Main weeds in the West Africa rice fields; Characteristics of the main weeds noxious to rice in West Africa; Vocabulary.
Weeding Of Paddy Fields In West Africa And Catologue Of The Main Weeds
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Author : Nonrovia West Africa Rice Development. Association (Liberia)
language : en
Publisher:
Release Date : 1978
Weeding Of Paddy Fields In West Africa And Catologue Of The Main Weeds written by Nonrovia West Africa Rice Development. Association (Liberia) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with categories.
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.
A Handbook Of West African Weeds
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Author : I. Okezie Akobundu
language : en
Publisher:
Release Date : 1987
A Handbook Of West African Weeds written by I. Okezie Akobundu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Weeds categories.
West African Weeds
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Author : G. W. Ivens
language : en
Publisher:
Release Date : 1978
West African Weeds written by G. W. Ivens and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Weed control categories.
National Agricultural Library Catalog
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Author : National Agricultural Library (U.S.)
language : en
Publisher:
Release Date : 1980
National Agricultural Library Catalog written by National Agricultural Library (U.S.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Agriculture categories.
Guide Des Adventices D Afrique De L Ouest
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Author : I. Okezie Akobundu
language : fr
Publisher: IITA
Release Date : 1989
Guide Des Adventices D Afrique De L Ouest written by I. Okezie Akobundu 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 Plants categories.
Biology And Ecology Of Weeds
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Author : W. Holzner
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-03-14
Biology And Ecology Of Weeds written by W. Holzner and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-03-14 with Science categories.
Weeds are a fascinating study for specialists, not only because of their economic importance, but also since in this case biology must be combined with history and agriculture (and its economic aspects). Thus, weed scientists may be concerned with pure basic research, concentrating on general aspects, or with applied science, i.e. having a practical orientation. One of the aims of this book is to create a synthesis between these two branches of study and to review the literature of both fields. The agrestals, the weeds of arable land ~ the most important group from an economic point of view ~ was chasen as the main topic. Other weed groups could only be mentioned briefly (e.g. grassland weeds), or superficially (e.g. aquatic weeds), or had to be omitted completely (e.g. ruderals, because they are so heterogeneous), to keep this volume to an acceptable size and price. Nevertheless, nearly all subsections of botanical science have been treated.
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.