نتایج جستجو برای: rainfed farms

تعداد نتایج: 25639  

2007

1. Agriculture is the predominant user (75-80%) of the available freshwater resource in many parts of the world. At present most of the water used to grow crops is derived from rainfed soil moisture, with non-irrigated agriculture accounting for some 60% of production in developing countries. Although irrigation provides only 10% of agricultural water use and covers just around 20% of the cropl...

2016
Daran Rudnick Suat Irmak D. R. Rudnick S. Irmak

With uncertainty in future irrigation water availability and regulations on nutrient application amounts, experimentally determined effects of “controllable” management strategies such as nitrogen (N), water, and their combination on crop water productivity (CWP, also known as crop water use efficiency) and actual evapotranspiration (ETa) are essential. The effects of various N application rate...

2015
ShaLanDer Kumar ThIagarajah ramILan

The livestock production system is considered equally sensitive to climate change as that of core agriculture system and at the same time livestock itself is also contributing to the phenomenon. The present paper attempts to analyze the sensitivity of livestock productivity in rainfed regions to climatic variability, significance of climate change with respect to Indian livestock and mitigation...

2012
T. Prathima T. Yellamanda Reddy T. Murali Krishna K. Devaki P. Sudhakar N. V. Sarala A. Muneendra Babu K. V. Naga Madhuri

Groundnut (Arachis hypogaea L.) is an important oilseed crop grown in our country. Majority of crop is under rainfed conditions and as a post rainy season (Rabi) crop in Andhra Pradesh. Several models are available to predict the phenology, growth and yield of groundnut crop. However, no precise models are available to validate the effects of moisture stress on groundnut and their subsequent im...

Journal: :Water 2022

The water crisis is a reality in Western Bahia. In this region, hydroclimatic monitoring system capable of providing availability information advance for users was implemented objectively to avoid conflicts. study, we proposed the integration between and linear programming method optimize agricultural net benefit considering scenarios rainfall delay or reduction. Case studies were demonstrated ...

Journal: :Remote Sensing 2012
Prasad S. Thenkabail Zhuoting Wu

The overarching goal of this research was to develop and demonstrate an automated Cropland Classification Algorithm (ACCA) that will rapidly, routinely, and accurately classify agricultural cropland extent, areas, and characteristics (e.g., irrigated vs. rainfed) over large areas such as a country or a region through combination of multi-sensor remote sensing and secondary data. In this researc...

Journal: :iran agricultural research 2011
a.s. moucheshi b. heidari a. dadkhodaie

water deficit is an important factor limiting crop growth all over the world. in order to evaluate genetic variation, heritability and the interrelationship between agronomic traits, twenty chickpea genotypes were cultivated in two separated randomized complete block experiments with three replications under normal irrigated and rainfed conditions. the experiments were carried out at the agricu...

Journal: :علوم گیاهان زراعی ایران 0
ابوطالبیان شریف زاده محمد جهانسوز احمدی محمد نقوی

poor wheat stand establishment is a major cause of yield loss, particularly in rainfed and poorly irrigated environments. seeds of eight wheat cultivars (triticum aestivum l.) including irrigated and rainfed varieties, belonging to three different climates of iran (hamedan as cold, karaj as temperate and sarpolzohab as warm climates) were primed using osmoprimig treatments through use of urea ,...

Journal: :Remote Sensing 2021

The work aimed to discriminate among different soil management treatments in terms of beneficial effects by high-resolution thermal and spectral vegetation imagery using an unmanned aerial vehicle open-source GIS software. Five were applied two organic vineyards (cv. Sangiovese) from Chianti Classico terroir (Tuscany, Italy) during experimental years. tested consisted conventional tillage, spon...

2005
Renato Villano Euan Fleming

There have been many previous studies of technical inefficiency in rice production in the Philippines, but none has focused simultaneously on production risk and technical inefficiency at the farm level. In this study, we analyse technical inefficiency in a rainfed lowland rice environment in Central Luzon using a stochastic frontier production function with a heteroskedastic error structure.

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