نتایج جستجو برای: rainfed farming

تعداد نتایج: 27611  

Journal: :بوم شناسی کشاورزی 0
فرزاد حسین پناهی فرزاد مندنی فرزین پورامیر مهدی نصیری محلاتی

cultivated area, yield and production trend of wheat (triticum aestivum l.), barley (hordeum vulgare l.), potato (solanum tuberosum l.), alfalfa (medicago sativa l.) and chickpea (cicer arietinum l.) as the main crops of kurdistan province were studied during 1983-2006 using time series analysis and the situation of future were predicted for 2006-2021 period. the results showed that the cultiva...

Journal: :crop breeding journal 2011
a. moghaddam g. pietsch m. r. ardakani a. raza j. vollmann

alfalfa is the best known fodder crop with high ability of biological nitrogen fixation and drought tolerance in dry, pannonian region of east austria. different morphological and physiological characteristics of 18 alfalfa genotypes from different geographical origins, 8 iranian ecotypes and 10 european cultivars were evaluated under irrigated and rainfed conditions during 2006-08 cropping sea...

Journal: :Agriculture 2022

The vast majority of farmers in the drylands are resource-poor smallholders, whose livelihoods depend heavily on their farming systems. Therefore, increasing resilience these smallholders is vital for prosperity. This study quantified household and identified influence semiarid tropics India by analysing 684 households. A capacity index was devised based composition food non-food expenditure, c...

2016
O K Koech R N Kinuthia G N Karuku S M Mureithi R Wanjogu

BACKGROUND Production of range grasses under irrigation has been widely adopted in the arid environments of Kenya as a strategy for seasonal forage supply gap. However, their productivity has only been done under conventional methods without an evaluation of their performance at varied soil moisture conditions. This information is needed for making sustainable management of irrigation water and...

2006
Boonrat Jongdee Grienggrai Pantuwan Shu Fukai Ken Fischer

A large portion of the world’s poor farm in rainfed systems where the water supply is unpredictable and droughts are common. In Thailand there are approximately 6.2 million ha of rain fed lowland rice, which account for 67% of the country’s total rice-growing area. This rice system is often characterised by too much and too little water in the same season. Farmers’ estimates of their annual los...

Journal: :Water 2022

Groundwater irrigation is essential to sustain food production, and aquifer depletion represents a major sustainability challenge for humanity. There need adequate modelling tools assess the impacts of farming practices on groundwater resources with policy-makers farmers in different contexts, especially case smallholder farms tropics. We introduce NIRAVARI model, which was designed represent I...

2017
Luís Loures José Gama José Rato Nunes António Lopez-Piñeiro

The soil exchange complex consists of colloidal materials on which ion exchange phenomena occur allowing it to attract, retain, and exchange elements that have opposite electric charges. Since their mineral constituents (clay) and organic components (humus) are mainly of a negative nature retained or exchanged ion are predominantly cations. Historically, failing to monitor parameters like the e...

Dingrong Wu Enli Wang Huib Hengsdijk Qiang Yu,

Summer maize (Zea mays L.) is one of the dominant crops in the North China Plain (NCP). Its growth is greatly influenced by the spatial-temporal variation of climatic variables, especially solar radiation, temperature and rainfall. The WOFOST (version 7.1) model was applied to evaluate the impact of climatic variability on summer maize yields using historical meteorological data from 1961 to 20...

2014
Ajay Parida M. S. Swaminathan

Sustaining and enhancing agriculture productivity has been recognized as one of the key pathways of reducing and eliminating hunger, poverty and malnutrition. Agricultural sector is regarded as the key component of the economies of many developing nations, including India. Globally, agriculture accounts for a large share of GDP, it employs a significant proportion of the labour force, represent...

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