نتایج جستجو برای: nue and narf
تعداد نتایج: 16827215 فیلتر نتایج به سال:
The blind pursuit of high yields via increased fertilizer inputs increases the environmental costs. Relay intercropping has advantages for yield, but a strategy for N management is urgently required to decrease N inputs without yield loss in maize-soybean relay intercropping systems (IMS). Experiments were conducted with three levels of N and three planting patterns, and dry matter accumulation...
In this paper, a new technique is proposed to optimize the conflicting parameters like low value of maximum side lobe level (SLL), narrow beam-width of the main beam and low value of maximum sideband radiation level (SRL) of time-modulated linear antenna arrays (TMLAAs). The method is based on minimizing a multi-objective fitness function by using single-objective differential evolution algorit...
Nitrogen fertilization and planting density are two key factors that influence the yield of rice. Reducing nitrogen fertilizer input increasing will help to improve use efficiency stabilize yield. Field 15N tracer method in plot experiments were conducted study trends yield, (NUE) transfer hybrid rice conventional under dense with a reduced rate (DPRN) sparse high (SPHN). Among plants, proporti...
Fertilization with nanoparticles offers alternatives to improve the efficiency of nutrient absorption in a sustainable way crops. The objective this work was study influence foliar application zinc-molybdenum nanofertilizer (Nano ZnMo) on nitrogen (N) use (NUE), as well yield parameters and N assimilation green bean plants cv. “Strike”. Three doses Nano ZnMo (0, 4 8 ppm) were applied combinatio...
بهبود کارایی استفاده از نیتروژن، یکی از مهم ترین راهبردهای مدیریتی برای بهبود عملکرد، کاهش هزینه های تولید و حفظ کیفیت محیط است. به منظور بررسی اثرات نوع و مقدار کود نیتروژنه بر رشد، عملکرد و کارایی استفاده از نیتروژن (nue) در گندم (triticum aestivum l.)، آزمایشی به صورت فاکتوریل در قالب طرح بلوک های کامل تصادفی با چهار تکرار در سال زراعی 91-1390 در مزرعه آموزشی پژوهشی دانشگاه علوم کشاورزی و من...
The effects of rapeseed and soya bean expeller (SBE) supplementation on digestion and milk production responses in dairy cows were investigated in an incomplete Latin square design using five cows and four 3-week periods. The experimental diets consisted of five concentrate treatments fed at a rate of 9 kg/day: a mixture of barley and oats, which was replaced with rapeseed or SBE at two levels ...
Highlights This work utilizes "multi-stage pulse labeling" 15N applications, primarily during reproductive growth stages, as a phenotyping strategy to identify maize hybrids with superior N use efficiency (NUE) under low N conditions. Research using labeled isotopic N (15N) can precisely quantify fertilizer nitrogen (N) uptake and organ-specific N allocation in field crops such as maize (Zea ma...
Irrigation water is limiting for crop production in arid and semi-arid areas. Furthermore, excess nitrogen (N) application is a source of groundwater contamination. Partial root drying irrigation (PRD) can be used as water saving technique and a controlling measure of groundwater N contamination. The objectives of this investigation were to evaluate the effect of ordinary furrow irrigation (OFI...
As a widely implemented irrigation regime for paddy fields, water-saving (WSI) is capable of ensuring water resource security and improving nitrogen use efficiency (NUE). Higher gaseous losses (GNL) lead to low recovery rate basal nitrogen, this the primary reason that restricts further improvements in NUE under WSI. The deep placement fertilizer (DPN) considered an efficient agricultural manag...
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