نتایج جستجو برای: tillage 2365 kg ha
تعداد نتایج: 244611 فیلتر نتایج به سال:
Zero tillage (ZT) is recommended for dryland farming because it enhances retention of residual soil moisture. However, not always clear whether this translates to an economic advantage over conventional tillage, which helps in controlling weeds. Using a nationally representative sample 1901 wheat fields Morocco as case study, we provide comparative analysis on different intensities. Results fro...
The DAYCENT ecosystem model (a daily version of CENTURY) and an emission factor (EF) methodology used by the Intergovernmental Panel on Climate Change were used to estimate direct and indirect N2O emission for major cropping systems in the USA. The EF methodology is currently used for the USA greenhouse gas inventory but process based models, such as DAYCENT, may yield more reliable results bec...
Soil carbon (C) sequestration in tilled and nontilled areas can be influenced by crop management practices due to differences in plant C inputs and their rate of mineralization. We examined the influence of four cover crops {legume [hairy vetch (Vicia villosa Roth)], nonlegume [rye (Secale cereale L.)], biculture of legume and nonlegume (vetch and rye), and no cover crops (or winter weeds)} and...
field trials were conducted at the experimental station (brody) belonging to poznan university of life sciences (ne poland). the purpose was to evaluate the impact of different tillage systems and white mustard cover crop on soil enzymatic activity and severity of plant infection by pathogenic fungi in spring wheat. a randomized complete block design was set up with four replicates per treatmen...
تحقیق حاضر به منظور بررسی تأثیر مقدار آب آبیاری و تراکم بذر بر عملکرد، دمای پوشش سبز و شاخص سطح برگ گیاه گندم در مزرعه تحقیقاتی دانشکده کشاورزی دانشگاه شیراز در طی سال های زراعی 87-1386 و 88-1387 انجام گردید. آزمایش بر روی گندم رقم شیراز در قالب طرح بلوک های کامل تصادفی و در سه تکرار انجام شد. تیمار های آزمایشی عبارت بودند از: پنج تراکم بذر 120، 160، 200، 240 و 280 kg/ha که سه تیمار آبیاری شامل...
Ultisol soil has a low organic matter content, CEC, and pH, causing an insufficient buffering capacity for N nutrients, especially NH4+. The objective of this study was to determine the effect tillage fertilization on quantity intensity (Q/I) Ammonium (CRNH40, PBCNH4+, NH40, KG) in soil, plant C uptake, mung bean yields at sixth growing season ultisols. This arranged 2 × factorial Randomized Bl...
Incorporation of manure into cultivated soils is generally recommended to minimize nutrient losses. A 3-yr study was conducted to evaluate sediment and nutrient losses with different tillage methods (moldboard plow, heavy-duty cultivator, double disk, and no-incorporation) for incorporation of beef cattle manure in a silage barley (Hordeum vulgare L.) cropping system. Runoff depths, sediment lo...
This study conducted in Kerala, evaluated the role of conservation tillage (zero (ZT), minimum (MT), and conventional (CT)) with five treatment combination potassium (12 kg/ha, 20 40 kg/ha) magnesium sulphate (60 kg/ha 80 on total DMP, physiology grain yield test variety Anaswara (cowpea). In pot culture study, application K: MgSO4, 10:80 resulted highest chlorophyll content. While higher a con...
Long-term single tillage causes serious deterioration of land quality and reduction crop yield. Tillage rotation can alleviate the problems caused by long-term tillage. However, effects different rotations are still very limited. A experiment was conducted in North China Plain to evaluate impacts on soil organic carbon (SOC), total nitrogen (STN) There were eight treatments with two main factor...
this experiment was arranged as a strip-plot on the base of a completely randomized block design with three replications to study the effect of tillage (whether in day or night or in day by light-proof cover) and application of reduced dosage of imazethapyr and trifluralin on weed control, yield and yield components of chickpea. main plots consisted of tillage methods and subplots consisted of ...
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