نتایج جستجو برای: apsim
تعداد نتایج: 172 فیلتر نتایج به سال:
Simulations of crop yields under climate change are subject to uncertainties whose quantification is important for effective use of projected results for adaptation and mitigation strategies. In the US Pacific Northwest (PNW), studies based on single crop models and weather projections downscaled from a few general circulation models (GCM) have indicated mostly beneficial effects of climate cha...
Adoption of decision support services (DSS) based on crop growth models has been poor and yet the concept of transferring an increasing body of scientific knowledge via DSSs remains attractive. This study explores the use of the Internet and participatory action research (PAR) to develop an irrigation management service called WaterSense for sugarcane irrigators in Australia. WaterSense combine...
Context The winter feed gap is a common problem for livestock grazing systems worldwide, and changes to climate have made these deficits more unpredictable extreme. Dual-purpose crops are an important tool in many southern Australian mixed crop–livestock help fill the gap. Providing reliable over can remove constraints allow earlier lambing autumn with potential whole-farm system benefits. Aims...
productivity over long periods of time, these efforts did not attempt to identify the environmental variables that The effectiveness of a cultivar evaluation system largely depends were most important in influencing GEI and thus the on the genetic correlation between genotype performance in multigenetic correlations for genotype performance among environment trials (MET) and in the target popul...
O efeito climático é o principal responsável pelas oscilações no rendimento produtivo. Logo, esperado que as mudanças do clima promovam alterações na agricultura, comprometam a sustentabilidade e segurança alimentar, especialmente, em áreas semiáridas. entendimento da amplitude desses fatores suas consequências agrícola mediante os diferentes cenários climáticos, regionais tecnológicos são fund...
Cereal–legume intercropping is promoted within semi-arid regions as an adaptation strategy to water scarcity and drought for low-input systems. Our objectives were firstly evaluate the crop model APSIM pearl millet (Pennisetum glaucum (L.))—cowpea (Vigna unguiculata (L.) Walp) intercropping—and secondly investigate hypothesis that provides complimentary yield under conditions. The was evaluated...
Abstract. Smallholder farming systems in southern Africa are characterized by low-input management and integrated livestock crop production. Low yields dry-season feed shortages common. To meet growing food demands, sustainable intensification (SI) of these is an important policy goal. While mixed crop–livestock may offer greater productivity, it implies trade-offs between supply, soil nutrient...
The goal to improve food security in sub-Saharan Africa (SSA) through domestic, resource efficient and low carbon agriculture is importance. Interventions produce more could impact the resource-base lead increase greenhouse gas (GHG) emissions from agroecosystems. Unfortunately, existing methods are limited analyzing small-scale agricultural systems, this situation an obstacle decision making w...
تحقیق حاضر در قالب یک آزمایش مزرعه ای در طی سال های 1387 و 1388 در مزرعه تحقیقاتی دانشکده کشاورزی دانشگاه تربیت مدرس و با هدف ساخت یک مدل مکانیستیک جدید برای ذرت در بعد مدل سازی پویایی نیتروژن و رشد در شرایط بدون علف هرز در شبیه ساز سیستم های تولید کشاورزی (apsim) و نیز معرفی پارامتری فیزیولوژیک برای گنجانده شدن در مدل های مکانیستیک رقابت ذرت با علف هرز به منظور پیش بینی دقیق تر میزان اُفت عمل...
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