نتایج جستجو برای: rainfed farmers

تعداد نتایج: 36321  

2010
R. Chandra Babu

Drought is a major constraint affecting rice production, especially in rainfed areas across Asia, Africa and South America. Development of drought resistant varieties will considerably improve rainfed rice production. Rice breeding programs focusing on drought resistance by direct selection for yield under stress have made little progress to date. Incorporation of secondary traits contributing ...

Journal: :Environmental science & technology 2008
Bridget R Scanlon Robert C Reedy W Andrew Jackson Balaji Rao

Perchlorate (Cl4-) reservoirs that accumulated in semiarid unsaturated zones, similar to chloride (Cl-), can contaminate underlying aquifers if they are mobilized. The purpose of this study was to evaluate Cl)4- mobilization related to land-use change from natural to agricultural ecosystems in the southern High Plains (SHP, USA), where large ClO4- concentrations (< or =60 microg/L) are found in...

Journal: :Remote Sensing 2013
Vikalp Mishra James F. Cruise John R. Mecikalski Christopher R. Hain Martha C. Anderson

Biophysical crop simulation models are normally forced with precipitation data recorded with either gauges or ground-based radar. However, ground-based recording networks are not available at spatial and temporal scales needed to drive the models at many critical places on earth. An alternative would be to employ satellite-based observations of either precipitation or soil moisture. Satellite o...

Journal: :American Journal of Climate Change 2022

Several studies have reported a significant yearly decrease in forest cover globally, using satellite images. This is especially true West Africa, where rapid urbanisation acerbates the problem, and both of these changes lead to alterations rainfall regime other climatic parameters. reveal that adaptation which reduces vulnerability adverse variation effects key developing resilience against cl...

Journal: :journal of agricultural science and technology 2014
m. haghjou b. hayati d. momeni choleki

in recent decades, large investments have been made to introduce soil conservation methods, but most of these efforts have had limited success in achieving the goals. as a result, attempt to identify the factors deterring or promoting adoption of soil conservation practices is important. therefore, this study aimed to investigate factors affecting adoption of soil conservation practices by rain...

Journal: :The plant genome 2017
Valerio Hoyos-Villegas Qijian Song James D Kelly

A genome-wide association study explored the genetic basis of variation for drought tolerance and related traits in a Middle American diversity panel comprising 96 common bean ( L.) genotypes. The panel was grown under irrigated and rainfed conditions and single nucleotide polymorphism (SNP) data were used to explore the genetic diversity and ancestry of the panel. Varying levels of admixtures ...

2008
Nurit Agam William P. Kustas Martha C. Anderson Fuqin Li Paul D. Colaizzi

[1] The utility of a thermal image sharpening algorithm (TsHARP) in providing fine resolution land surface temperature data to a Two-Source-Model for mapping evapotranspiration (ET) was examined over two agricultural regions in the U.S. One site is in a rainfed corn and soybean production region in central Iowa. The other lies within the Texas High Plains, an irrigated agricultural area. It is ...

Journal: :World water policy 2021

Abstract Climate change continues to affect the availability and quantity of water needed for food production globally. Due this, authorities have increasingly advocated adoption water‐saving practices technologies such as drip irrigation systems increase well efficiently conserve dwindling resources. Such promise efficiency but pose challenges, especially farmers they transition from either ra...

Wheat is the main human food that is consumed directly. Recognition of climatic parameters and study of climatic needs of crop plants is one of the most important factors in the production of rainfed wheat. This study is due to the importance of climatic parameters in rainfed wheat production and also due to the potential of rainfed rainforests in Tajikistan, including Ryan Panjkent and Qa in W...

Journal: :Agronomy 2021

In this study, we aimed to improve rice farmers’ productivity and profitability in rainfed lowlands through appropriate crop nutrient management by closing the yield gap during dry season of Indonesia. The Integrated Crop Management package, involving recommended practices (RP) from Indonesian Agency for Agricultural Research Development (IAARD), were compared current at ten farmer-participator...

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