نتایج جستجو برای: nitrogen fertilizers
تعداد نتایج: 128743 فیلتر نتایج به سال:
The climate changes and increased drought frequency still more frequent in recent periods bring challenges to management with wheat straw remaining the field after harvest its decomposition. experiment carried out 2017–2019 Czech Republic aimed evaluate winter decomposition under different organic mineral nitrogen fertilizing (urea, pig slurry digestate without inhibitors of nitrification (IN))...
Abstract Purpose Charred materials are low in bioavailable nitrogen (N) due to gaseous losses and the formation of recalcitrant structures during pyrolysis. Enriching chars with N from wastewaters offers a possibility upgrade agronomic value manage liquids. For assessing practical feasibility approach, more information on extent retention release loaded is needed. Methods The ammonium-N (NH 4 -...
In line with sustainable agriculture development, an experiment was conducted including tillage as the main factor in two conventional systems (plowing and mixing fertilizer with soil) and no tillage (leaving residuals of green manure and direct corn sowing). The fertilizer resources were T0: control, T1: barley green manure without chemical and manure fertilizers, T2: barley green manure with ...
Abstract: In this study, a greenhouse study was conducted to investigate the growth of Aloe vera with different content of nitrogen fertilizers. Treatments consisted of 0, 0.15, 0.29, 0.43, 0.57 and 0.71 g/pot ammonium nitrate and 0, 0.11, 0.22, 0.33, 0.43, 0.53 g/pot urea. Then the effects of nitrogen fertilizers on fresh weight, photosynthetic pigments and proline content were studied. The...
Energy consumption can vary signifi cantly between conventional and organic production systems when accounting for direct energy inputs as well as indirect energy involved in manufacturing, shipping and applying pesticides and nitrogen-based fertilizers. Because organic agriculture reduces the amount of indirect energy inputs, it is often assumed that organic agriculture is less energy intensiv...
Cereal production that now sustains a world population of more than 6.5 billion has tripled during the past 40 yr, concurrent with an increase from 12 to 104 Tg yr(-1) of synthetic N applied largely in ammoniacal fertilizers. These fertilizers have been managed as a cost-effective form of insurance against low yields, without regard to the inherent effect of mineral N in promoting microbial C u...
Within the last 3 decades, fossil fuels have been the largest source of greenhouse gas emissions. Energy intensive industries are the main energy-consuming sectors in Iran. Non-metallic mineral products, basic metals, and chemical products are considered to be the most energy intensive industries in Iran. this paper means to evaluate the environmental efficiency of industrial sector during 2008...
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