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Biblioteca(s):  Biblioteca Rui Tendinha.
Data corrente:  11/03/2016
Data da última atualização:  11/03/2016
Autoria:  HUMPHREYS, L. R.
Título:  Tropical forages : their role in sustainable agriculture.
Ano de publicação:  1994
Fonte/Imprenta:  Essex: Longman, 1994.
Páginas:  414p.
ISBN:  0582078687
Idioma:  Português
Conteúdo:  Pressure on the land resources of the tropics and subtropics has increased as the numbers of people supported by the land have risen. The cultivation of uplands which are marginally suited to annual cropping has led to decreasing soil fertility and declining crop yields. Increased run-off from these lands has altered the hydrological characteristics of the watersheds, and the soil eroded represents the loss of irreplaceable resources. Continous monocropping leads to the development of intransigent problems of disease, pest or weed infestation. In the humid tropics plantation agriculture is vulnerable to world price fluctuations, and farmers dependent upon a single export commodity seek to diversify their operations. Tropical forages are playing an increasing role in the development of sustainable cropping systems, and a new technology of forage improvement has arisen. This book begins by outlining the objectives of the interaction between crops, pastures and animals. These may be directed primarily to the maintenance or repair of soil fertility, as reflected by the nitrogen accretion due to forage legumes, the organic matter status, attributes of soil structure, the control of erosion and the spatial transfer of nutrients. The integration of forages in cropping systems may also lead to more efficient utilization of environmental resources, as represented by energy flows, moisture conservation and crop protection, whilst the added flexibility of production can lead to diversi... Mostrar Tudo
Palavras-Chave:  Agricultura sustentavel; Agriculture; Agroforestry; Agrossilvicultura; Consorciacao; Cropping systems; Culturas tropicais; Degradacao; Deterioracao; Erosao; Erosion; Farming systems; Feed crops; Fertilidade; Fertility; Fixacao de nitrogenio; Forage plants; Husbancry; Land resource; LForragem; Management; Manejo; Mixed cropping; Nitrogen fixation; Pastagem; Pastagens; Pasture; Pastures; Pecuaria; Pesquisa; Plant protection; Planta forrageira; Producao animal; Protecao de planta; Recurco da terra; Regiao tropical; Research; Sistema de producao; Sistemas; Soil deterioration; Soils; Solo; Sustainability; Sustainable agriculture; Sustentabilidade; Tropical crops; Tropicos; Tropics.
Categoria do assunto:  --
Marc:  Mostrar Marc Completo
Registro original:  Biblioteca Rui Tendinha (BRT)
Biblioteca ID Origem Tipo/Formato Classificação Cutter Registro Volume Status
BRT10773 - 1ADDLV - PP633.2H927t0000007848

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