搜索结果: 1-15 共查到“农学 Africa”相关记录64条 . 查询时间(0.151 秒)
Soil water deficit as a tool to measure water stress and inform silvicultural management in the Cape Forest Regions, South Africa
Soil Water Availability Climatic Gradient Slash Pine Monterey Pine Edaphic Properties
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2024/1/19
An understanding of variations in water availability to plantation forests on a spatial and temporal scale is essential when designing risk averse and site-specific silvicultural management regimes. V...
Modelling climate change impacts on maize yields under low nitrogen input conditions in sub-Saharan Africa
crop simulation model ensemble modelling model intercomparison smallholder farming systems uncertainty
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2023/12/21
Smallholder farmers in sub-Saharan Africa (SSA) currently grow rainfed maize with limited inputs including fertilizer. Climate change may exacerbate current production constraints. Crop models can hel...
Anthropization and Climate Change: Impact on the Discharges of Forest Watersheds in Central Africa
climate change urbanization impervious area Cameroon runoff
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2023/12/15
Climate change and anthropization are major drivers of river flows variability. However, understanding their simultaneous impact on discharges is limited. As a contribution to address this limitation,...
Biodiversity Conservation of National Parks and Nature-Protected Areas in West Africa: The Case of Kainji National Park, Nigeria
carbon storage and sequestration climate change habitat diversity Kainji National Park protected areas air quality
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2023/11/20
Due to rising global warming and climate change, biodiversity protection has become a critical ecological concern. Rich biodiversity zones are under threat and are deteriorating, necessitating nationa...
Stanford study explores risk of deforestation as agriculture expands in Africa
Stanford explores risk deforestation agriculture expands Africa
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2017/4/27
Next time you bite into a chocolate bar, think of Africa. The continent produces nearly 70 percent of the world’s cocoa, a growing output that requires carving more than 325,000 acres of new farmland ...
Labor-Saving Weed Technologies for Lowland Rice Farmers in sub-Saharan Africa
Chemical weed control hand weeding irrigated lowland mechanical weed contro
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2015/12/23
Time requirements, weed control efficacy, and yield effects of three labor-saving weed technologies
were tested against hand weeding during three seasons in 2012 and 2013. The technologies incl...
Effect of season and age on blood minerals, liver enzyme levels, and faecal egg counts in Nguni goats of South Africa
alkaline phosphatase aspartate aminotransferase
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2015/6/23
The objective of the study was to determine the relationships between age of the goat and faecal
egg counts, liver enzymes, and minerals in the wet and dry seasons in male and female Nguni goats of ...
Grassland Society of Southern Africa（GSSA）
Grassland Society of Southern Africa grass GSSA
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2015/4/21
In recent years the GSSA has made major efforts to become more professional in its approach to managing and growing the Society. In the modern world, the Society is competing for members’ time and res...
Biological Control of Plant Parasitic Nematodes: Prospects and Challenges for the Poor Africa Farmer
nematodes food security Africa
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2015/3/6
Africa contains a larger part of world’s developing countries with their associated problems of food security
and healthy environment. Pollution and its grave consequences are among the greatest cha...
Rice yellow mottle virus genus Sobemovirus: a continental problem in africa
Rice yellow mottle virus Sobemovirus strains rice Africa
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2015/1/30
Rice yellow mottle virus genus sobemovirus (RYMV) was first reported in Kenya in 1966. The disease caused by this virus is fast becoming a major limiting factor in the rice production in Africa and ne...
Farmers’ Perceptions and Knowledge of Cattle Adaptation to Heat Stress and Tick Resistance in the Eastern Cape, South Africa
Herd Composition Nguni Non-descript Genotype Season Socio-demography
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2016/5/17
The objective of this study was to determine the perceptions and knowledge of farmers of heat stress and tick resistance in cattle. A cross-sectional survey was conducted and 110 farmers in four villa...
Researchers shocked to discover just 250 lions surviving in West Africa（图）
lions extinction
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2014/7/9
The African lion faces extinction across the entire West African region, according to a new report.
Income Distribution and Expenditure Patterns in South Africa
Income Distribution Expenditure Patterns South Africa
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2014/3/24
Income Distribution and Expenditure Patterns in South Africa。
Potential distribution of woody bamboos in Africa and America
woody bamboos Africa America
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2014/5/6
This study was designed to produce regional distribution maps of all species of woody bamboos occurring in Africa; North, Central and South America. Qualitative data on distribution of woody bamboos w...
Potential distribution of rattans in Asia-Pacific and Africa
Potential distribution of rattans Asia-Pacific Africa
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2014/5/6
This study was designed to produce global overview and regional distribution maps of all rattan species occurring in the Asia-Pacific region (South, Southeast and East Asia, Papua New Guinea and Austr...