نتایج جستجو برای: nutrient use efficiency
تعداد نتایج: 2114750 فیلتر نتایج به سال:
this research was designed to evaluate and compare the applicability of two different types of irrigation including traditionally (surface irrigation) and simple sub-surface drip irrigation (using pricked-pipe covered with plastic cloth). two plots containing 39 pistachio trees with 720 m2 area were selected in rafsanjan, iran. both plots were irrigated using exactly the same quantity and quali...
abstract fertilizer use efficiency (fue) is one way of improving the fertilizer management in agriculture. in this study, spinach (spinacea oleracea) was used as a case study vegetable to determine its nitrogen use efficiency in varamin, iran. an experiment was conducted using split plot design with three replications. treatments included of five levels of n as 0, 150, 200, 250 and 300 kg ha-1 ...
nitrogen use efficiency (nue) is usually lower in paddy rice (oryza sativa l.) than in upland crops. for this reason, any attempt to improve nue through the use of different nitrogen (n) carriers, different rice cultivars, properly timed n application, the use of ni-trification and urease inhibitorsis of prime interest. moreover, zinc (zn) next to n seems to be the most important soil factor af...
The functional adjustments of winter-deciduous perennials to Mediterranean conditions have received little attention. The objectives of this study were: (i) to determine whether Amelanchier ovalis, a winter-deciduous shrub of Mediterranean and sub-Mediterranean regions, has nutritional and phenological traits in common with temperate zone deciduous trees and shrubs and (ii) to determine the con...
An experiment was designed to investigate the effect of grafting Cucumis sativus var. Super daminos on Cucurbita moschata (Rs) and Lagenaria siceraria (Lg)which is comparing with non-grafting of Cucumis sativus var. Super daminos (Rn) and self-grafting (Rc). The experiment carried out as a factorial experiment based on complete randomized design (CRD) with 4 replicates in two temperature treatm...
abstract: in this thesis, we focus to class of convex optimization problem whose objective function is given as a linear function and a convex function of a linear transformation of the decision variables and whose feasible region is a polytope. we show that there exists an optimal solution to this class of problems on a face of the constraint polytope of feasible region. based on this, we dev...
Nutrient management is critical for rice farming because the crop grown under diverse conditions, and in most cases, existing nutrient practices fail to achieve an attainable yield target. During recent years site specific gained importance a target with maximum use efficiency. Sufficient research work has not been carried out this direction so far rice–rice–pulse (black gram) sequential croppi...
The experiment was conducted at Zonal Agricultural Research Station, Vishwesharaiah Canal Farm, Mandya during 2018-19 to study the nutrient uptake (NPK), use efficiency and grain yield of rice (Oryza sativa L.) in different establishment methods under varied management practices. laid out a split plot design with three replications. main comprised viz., semi dry rice, drum seeded transplanted w...
چکیده کمبود منابع آب با کیفیت مناسب و گسترش شوری خاک از مهم ترین چالش های پیش رو برای توسعه کشاورزی در بسیاری از نقاط دنیا به ویژه ایران می باشد. رشد روزافزون جمعیت و نیاز به تولید غذای بیشتر، لزوم افزایش بهره وری تولید و استفاده از منابع غیرمتعارف نظیر آب های شور را اجتناب ناپذیر کرده است. پژوهش های انجام گرفته در ارتباط با شوری، دو هدف کلی شامل افزایش تحمل گیاهان زراعی به شوری و ارایه راهک...
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