Results 61 to 70 of about 82,134 (215)
Plant Diagnostic in Durum Wheat
Растениевъдни науки, 2013 Seven varieties of durum wheat grown under nitrogen fertilization N0, N60, N120 and N180 were studied in content of total nitrogen, phosphorus and potassium in the tillering stage.
M. Almaliev +2 more
doaj
The effect of soil compaction on growth, yield and nitrogen use efficiency of maize in black soil
Guan'gai paishui xuebao【Objective】 Black soil is widely distributed in northeastern China and other countries. Machinery operations in agricultural production in these regions has resulted in soil compaction.
LIU Tianyu +5 more
doaj +1 more source
AgricultureAdequate fertilization with nitrogen (N) and potassium (K) is essential to sustain crop productivity and minimize nitrogen losses to the environment. However, the increasing imbalance in fertilizer use in Poland, with low potassium inputs, may impair ...
Agnieszka Rutkowska +1 more
doaj +1 more source
Optimal fertilization dates were found for two nitrogen sources in the presence of two diseases for wheat farmers with different risk preferences. Risk was independent of fertilization date.
Roberts, Roland K. +4 more
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ECONOMICALLY OPTIMAL NITROGEN FERTILIZATION FOR YIELD AND PROTEIN IN HARD RED SPRING WHEAT
This analysis determines profit maximizing N fertilization levels of hard red spring wheat (HRSW) for various wheat prices, N prices, and protein-based HRSW price premium/discount (P/D) structures for south eastern Washington data.
Pan, William +3 more
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Precision Nitrogen Fertilization Technology with Micro Grids
Sensor-based precision fertilizer technologies are being developed and researched by production scientists. One such technology uses normalized difference vegetation index (NDVI) reflectance measurements of growing winter wheat plants and a nitrogen ...
Raun, Bill +4 more
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Agronomy Science, 2005 A field study was carried out in 2000–2002 in the second rotation of two factors crop rotation experiment (sugar beet – spring wheat – winter barley) established at Swojec Experimental Station of Agricultural University of Wrocław.
Lesław Zimny, Piotr Kuc
doaj
Guangdong nongye kexue【Objective】To elucidate the legacy effects of nitrogen fertilization in preceding crops on annual productivity and nutrient cycling patterns within winter wheat-summer maize system, aiming to develop precision fertilization frameworks that reconcile high
Peng ZHOU +5 more
doaj +1 more source
Analysis of Nitrogen in Fertilizers
Journal of AOAC INTERNATIONAL, 1964 Abstract A survey of fertilizer commercial laboratories and regulatory laboratories showed that the salicylic acid method, 2.037, is still being widely used on liquid fertilizers; that many users of the reduced iron method are modifying it; and that very little use is being made of nitrogen activity methods 2.048— 2.051.
openaire +1 more source
, 2009 Picea asperata is a dominant species in the subalpine coniferous forests distributed in eastern edges of Tibetan Plateau and upper reaches of the Yangtze River.
Liu, Q +2 more
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