نتایج جستجو برای: density plastic irrigation pools
تعداد نتایج: 519360 فیلتر نتایج به سال:
The first rule regarding irrigation district canal automation is that there is no single "best" method of automation. As an example, the cost of automating a small lateral structure with a computerized gate is similar to the cost of automating a regulating gate on a large canal, although the respective justifiable budgets may be $1000 versus $100,000 per structure. The locations of buffer reser...
liver secretes a large range of very low density lipoprotein (vldl) particles of different sizes and svedberg flotation rates (sf). in plasma vldl is converted to low density lipoprotein (ldl)which in turn plays an important role in the development of atherosclerotic diseases; however,triglyceride (tg) rich vldl1 has been shown to be more deleterious than cholesteryl ester (ce) rich vldl2. ther...
Nowadays, mulch types are used to improve environmental conditions for plant growth in terms of irrigation water and soil quality. Production and cultivation of forage plants in arable lands, especially in arid and semi-arid regions, is very important, because it reduces grazing pressure on rangelands. In order to evaluate the effect of mulch types on some plant characteristics of forage maize ...
in order to study the effect of supplementary irrigation and different plant densities on grain yield and yield components of chickpea cv hashem, an experiment was conducted as split plot arrangement in a randomized complete block design with three replications in sirvan, ilam during 2008-2009 cropping season. main plot included supplementary irrigation (check as non-irrigation, supplementary i...
, present study was performed in order to determine effects of different amounts of irrigation water, plant density and planting pattern on yield, yield components and water use efficiency (wue) of corn, variety single cross 700 (700ksc) using drip irrigation systems (tape) , in the research station of islamabadgharb in two consecutive years (2011-2012). the project was in the form of split blo...
Plastic film mulching (PM) is widely utilized for maize production in China. However, the effect of PM on the grain yield of crops has not been established, and the biochemical mechanism underlying the increase or decrease in grain yield under PM is not yet understood. Grain filling markedly affects the grain yield. The objective of this study was to investigate the effects of PM on maize grain...
The current spread of zoonotic visceral leishmaniasis (ZVL) throughout arid areas of Central Tunisia is a major public health concern. The main objective of this study is to investigate whether the development of irrigation in arid bio-geographical areas in Central Tunisia have led to the establishment of a stable cycle involving sand flies of the subgenus Larroussius and Leishmania infantum, a...
In the north-western region of Venezuela, Phyllocoptruta oleivora, Tetranychus mexicanus and Brevipalpus phoenicis are common plant-feeding mites on leaves, fruits and branches of Tahiti lime, Citrus latifolia. The population dynamics of these herbivores are affected by many factors, such as weekly treatments with wettable sulphur, particularly during the wet season, maintenance pruning of plan...
There is a need to optimize water-nitrogen (N) applications to increase seed cotton yield and water use efficiency (WUE) under a mulch drip irrigation system. This study evaluated the effects of four water regimes [moderate drip irrigation from the third-leaf to the boll-opening stage (W1), deficit drip irrigation from the third-leaf to the flowering stage and sufficient drip irrigation thereaf...
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