نتایج جستجو برای: rainfed agriculture

تعداد نتایج: 66736  

2007
A. K. Srivastava P. N. Singh S. Kumar P. C. Ram A. Ismail

Rainfed lowland rice ecosystem is affected not only by water deficit but also by excess water leading from partial to complete submergence. Although the rice plant is well adapted to aquatic environment, it is unable to survive if completely submerged in water for several weeks. Damage to rice plants due to excess water has been advocated to occur during submergence and also on entry of oxygen ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2013
Peter S Carberry Wei-li Liang Stephen Twomlow Dean P Holzworth John P Dimes Tim McClelland Neil I Huth Fu Chen Zvi Hochman Brian A Keating

Global food security requires eco-efficient agriculture to produce the required food and fiber products concomitant with ecologically efficient use of resources. This eco-efficiency concept is used to diagnose the state of agricultural production in China (irrigated wheat-maize double-cropping systems), Zimbabwe (rainfed maize systems), and Australia (rainfed wheat systems). More than 3,000 sur...

Journal: :African Journal of Agricultural Research 2022

Water is one of the very important inputs necessary for production food crops hence, security and rural livelihoods are essentially linked to accessibility water. Eighty percent world’s global agricultural land area under rain-fed; this contributes 58% staple foods. In Sub-Sahara Africa (SSA), reliance on rain-fed agriculture high with 97% moisture needs fulfilled mainly by water stored i...

2016
Konrad Hentze Frank Thonfeld Gunter Menz

Moderate Resolution Imaging Spectroradiometer (MODIS) data forms the basis for numerous land use and land cover (LULC) mapping and analysis frameworks at regional scale. Compared to other satellite sensors, the spatial, temporal and spectral specifications of MODIS are considered as highly suitable for LULC classifications which support many different aspects of social, environmental and develo...

2014
Edgar Pérez-Negrón Patricia Dávila Alejandro Casas

BACKGROUND TEK, ecological and economic aspects of columnar cacti were studied in the Tehuacán Valley, Mexico to design sustainable regimes of fruit harvest. We analysed the amounts of edible fruit, seeds and flowers produced per hectare of cardonal, jiotillal and tetechera forests, their economic value and actual extraction rates, hypothesizing that the economic benefits of these NTFP would po...

Journal: :Water International 2021

We propose the concept of ‘agri-vector water’ (AVW) to refer water allocated towns maintain urban-based agricultural services that support rainfed farming in surrounding areas. AVW captures idea highly scarce ‘blue can be productively used this way ‘green rather than applied as consumptive irrigation, especially when latter exacerbates shortages during drought and dry seasons arid semi-arid reg...

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