نتایج جستجو برای: water productivity

تعداد نتایج: 626905  

Journal: :Association of Arab Universities Journal of Engineering Sciences 2019

ژورنال: علوم زراعی ایران 2020
Farid, Nasrin, Ghalamboran, Mohammad Reza, Moradi Telavat, Mohammad Reza, Siadat, Seyed Ataollah,

This experiment was carried out to investigate the effect of biopolymer coated urea under deficit irrigation on ear yield, nitrogen uptake, nitrogen recovery efficiency and nitrogen use efficiency, grain protein and plant nitrogen content in sweet corn (KSc 403). The experiment was carried out in strip plot arrangement based on randomized complete block design with four replications in Agricult...

Journal: :بوم شناسی کشاورزی 0
محمد یوسفی عبدالمجید مهدوی دامغانی

efficient use of inputs and energy resources is one of the most important principals of sustainable agriculture. for this purpose, water and energy productivity of irrigated agroecosystems of major crops in kermanshah province were evaluated. the data was collected via questionnaire through face to face interview of 180 farmers of this province during summer 2010. results showed that water prod...

Journal: :پژوهش های زراعی ایران 0

in order to investigate the indices of drought tolerance, correlation coefficient and path analysis at deficit irrigation and nitrogen experiment, this experiment was conducted as split plot arranged in a randomized complete block design (rcbd) with three replications during 2000-2003 for wheat at maragheh agricultural research station of dari. the treatments were included four levels of defici...

2012
M. PARIMALA DAPHNE LOPEZ

India, being an agricultural country analysis of soil texture and water resource plays a vital role in increasing the productivity of crops. The area of study is Vellore district in Tamil Nadu where agriculture is the main occupation. Though it is a fact, most of the land remains uncultivated due to the lack of knowledge of soil and water wealth. This paper proposes a method to analyze the suit...

2008
M. Dinesh Kumar Ajaya Kumar Malla Sushanta Kumar Tripathy

If the balance between availability and requirement drives the value, then the economic value of water in agriculture should be remarkably higher in water-scarce regions when compared to water-rich regions. Similarly, in water-abundant regions, if the land is scarce, then the incremental return per unit of land should be higher than that in land-rich region that are water-scarce. These hypothes...

Journal: :Annual review of plant biology 2015
Carl J Bernacchi Andy VanLoocke

Transpiration--the movement of water from the soil, through plants, and into the atmosphere--is the dominant water flux from the earth's terrestrial surface. The evolution of vascular plants, while increasing terrestrial primary productivity, led to higher transpiration rates and widespread alterations in the global climate system. Similarly, anthropogenic influences on transpiration rates are ...

Journal: :Journal of environmental biology 2006
V Sulabha V R Prakasam

Thirumullavaram temple pond associated with Sree Mahavishnu temple is located very close to the Arabian sea in Kollam municipality of Kerala. Physicochemical characteristics of water and sediment, productivity, plankton count, coliform count and correlation coefficients of various parameters were analysed for a period of one year from June 1999 to May 2000. It showed that the water characterist...

2003
John Rockström Jennie Barron Patrick Fox

Considering the persistently growing pressure on finite freshwater and soil resources, it becomes increasingly clear that the challenge of feeding tomorrow’s world population is, to a large extent, about improved water productivity within present land use. Rain-fed agriculture plays a critical role in this respect. Eighty per cent of the agricultural land worldwide is under rain-fed agriculture...

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