نتایج جستجو برای: sprinkler irrigation systems
تعداد نتایج: 1221929 فیلتر نتایج به سال:
evaluating the implemented sprinkler irrigation systems, made it possible to determine these systems level of success; and presented practical solutions to improve the efficiency of these systems and offered suggestions for future systems. the main objective of this study was to evaluate the status and performance of the implemented center pivot systems in the study area. in this study, 5 cente...
Wave lensing produces the highest level of transient solar irradiances found in nature, ranging in intensity over several orders of magnitude in just a few tens of milliseconds. Shallow coral reefs can be exposed to wave lensing during light-wind, clear-sky conditions, which have been implicated as a secondary cause of mass coral bleaching through light stress. Management strategies to protect ...
abstract in order to evaluate the effects of different depths of irrigation by sprinkler irrigation system on water use efficiency (wue) of new early maize cultivar ksc302, an experiments was carried out in karj during 2006 and 2007. experimental design was split plot based on randomized complete blocks with three replications. main plots were three irrigation levels: 75%, 100% and 125% etc (es...
Abstract Traditional rice ( Oryza sativa L.) cropping systems under flooding irrigation combined with conventional tillage management are increasing threat due to a loss of soil quality and scarcity water resources, especially in Mediterranean environments. Hence, the development such strategies as no-tillage, application organic amendments, water-saving methods could be vital enhancing sustain...
Abstrak. Pemberian air irigasi secara konvensional di lahan usaha tani menyebabkan penurunan nilai efisiensi irigasi. Hal ini dapat mengakibatkan kehilangan dan pemberian yang tidak sesuai dengan kebutuhan tanaman. Penerapan teknologi sprinkler mampu meningkatkan produktivitas untuk memenuhi Penelitian bertujuan mengetahui penerapan pada pertanian Kecamatan Tarakan Utara Kota Tarakan. terdiri a...
water shortage in the agricultural sector is currently a major challenge in crop production. the more efficient water usage is that which increases yield without increasing water use. thus, a determination of the water-yield relationship is essential. a field study was conducted to examine water-yield relations in three genotypes of soybeans, including optimum irrigation depth, a comparison of ...
system evaluations were performed on 48 center pivots in different parts of saudi arabia. these systems, located on different farms in four different regions of the country, namely: riyadh, jouf, qassim and eastern regions, were evaluated to study the effect of lateral configuration on water application uniformity as regards the original vs. modified laterals. lateral configuration modification...
Many recent reviews and meta-analyses of N2O emissions do not include data from Mediterranean studies. In this paper we present a meta-analysis of the N2O emissions from Mediterranean cropping systems, and propose a more robust and reliable regional emission factor (EF) for N2O, distinguishing the effects of water management, crop type, and fertilizer management. The average overall EF for Medi...
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