The predominance of rice-wheat cropping system in Punjab has resulted in number of ecological problems in the state such as depletion of underground water table, deterioration of soil health by adversely affecting the physical, chemical and biological properties of the soil (Kumar et al., 2016). However, for over a decade, ricewheat cropping system yields in high productivity zones have either ...

evaporation from the soil surface has an important role in the water balance model in nature, so that the major part of rain fall and irrigation water in arid and semi-arid regions is lost via evaporation from the soil surface. in such areas, there are some regions with high water table and because of evaporation from the soil surface, salts accumulation also occur in the soil surface. so evapo...

to study the effect of sowing date and a single irrigation (si) on yield and yield components of barley, a field experiment was conducted in dryland agricultural research institute (maragheh, iran) in 2004-06 cropping seasons, using a split plot based on a randomized complete block design with 3 replications. main plots were assigned to 3 levels of sowing date (early, normal and late). sub-plot...

Groundwater depletion is a problem in many parts the world. We developed an approach to investigate drivers of groundwater data-scarce regions. The combines natural and human-induced drivers, with latter focusing on link between human activities government policies. tested Wadi Zabid, Yemen. Forty years rainfall-runoff data were analyzed, alongside changes land cover, abstraction related No dec...

HOLLANDER, WALTER, JR., ROBERT W. WINTERS, T, FRANKLIN WILLIAMS, JOHN BRADLEY, JEAN OLIVER AND LOUIS G. WELT. Defect in the renal tubular reabsurption of water associated with potassium depletiun in rats. Am. J. Physiol. I&J(~): 557-563. q57.---The effect of graded degrees of K depletion on the ability to produce a concentrated urine was studied in Sprague-Dawley rats. With increasing degrees o...

lead and zinc production is one of the main predisposing factors of excessive greenhouse gases emissions, air pollution and water consumption. in this paper, the environmental problems of lead and zinc production in calcimin plant are expressed and life cycle assessment of this plant is assessed. the data regarding the amount of induced global warming and pollution, acidification, and depletion...

abstract one of the ways to increase economic and environmental efficiency of drainage systems is water table management. water table management consists of, controlled drainage and subirrigation. this study examines the effect of controlled drainage on yield, root distribution pattern and water use efficiency of maize (sc 704) in karaj. the experiment was performed as a randomized complete des...