نتایج جستجو برای: dryland cold area

تعداد نتایج: 685576  

Journal: :به نژادی نهال و بذر 0
رضا حق پرست r. haghparast deputy dryland agricultural research institute, p. o. box 67145-1164, sararood, kermanshah, iran..معاونت مؤسسه تحقیقات کشاورزی دیم، صندوق پستی 1164-67145، سرارود، کرمانشاه رحمان رجبی r. rajabi مظفر روستایی m. roustaii مصطفی آقایی سربرزه m. aghaee sarbarzeh

line to/cal/3/7c//bb/cno/5/cal//cno/sn64/4/cno//bad/dar/3/kl/6/sabalan was received from icarda under international winter wheat improvement in 1999-2000 cropping season. based on its favorable agronomic characteristics, it was selected for further evaluations in advanced and elite yield trials in main research stations of dryland agricultural research institute (dari) and on farm yield trials ...

2018
Sanford D. Eigenbrode W. Patrick Binns David R. Huggins

Citation: Eigenbrode SD, Binns WP and Huggins DR (2018) Confronting Climate Change Challenges to Dryland Cereal Production: A Call for Collaborative, Transdisciplinary Research, and Producer Engagement. Front. Ecol. Evol. 5:164. doi: 10.3389/fevo.2017.00164 Confronting Climate Change Challenges to Dryland Cereal Production: A Call for Collaborative, Transdisciplinary Research, and Producer Enga...

Journal: :OR Insight 2011
Narges Banaeian Morteza Zangeneh

Wheat is widely grown in Iran as a staple food; therefore, the government there encourages farmers to produce wheat (a common agricultural enterprise) by increasing farm productivity and efficiency. The study compares the efficiency of wheat production for dryland (low input) and irrigated (high input) systems across Iranian provinces by using Data Envelopment Analysis (DEA). The average techni...

Journal: :E3S web of conferences 2021

Dryland farming is still to be a main activity of the community around part Forest Area (Bagian Daerah Hutan/BDH), Panggang, Kesatuan Pengelolaan Hutan (KPH) Yogyakarta. This study aimed determine efficiency dryland and factors that influencefarming income. The survey method was used carry out data information by interview farmer. R/C analysis, labor productivity capital analysis were farming. ...

2009
R VAN ANTWERPEN

In many crop producing areas of the world there are reports of yield decline and loss of productive potential in soils. Little is known about the long term effects of sugarcane monocropping on changes in physical, chemical and biological properties of soils. The aim of this study was to quantify the physical and chemical condition of soils under sugarcane production in northern Kwazulu-Natal, a...

Background. Cardiac rehabilitation program is aimed at reducing secondary risk factors and improving function in patients undergoing coronary artery bypass grafting run which ultimately may delay or reduce mortality in patients. A major component of cardiac rehabilitation program is exercise. Objective(s). This study is aimed at evaluating the effect of aquatic and dryland training on Perox...

2006
g. Noy - Meir

In this study, we extend a model of daily dryland dynamics by parameterizing a modified version of a minimalistic annual model to examine how the statistical structure of annual rainfall and grazing intensity interact to influence dryland vegetation. With a Monte Carlo approach, an ensemble outcome provides a statistical description of likely dryland vegetation dynamics responding to variations...

2008
Kate Norvell Neil Hansen Dwayne Westfall Laj Ahuja

Water is the most production limiting factor for dryland cropping systems in semiarid Great Plains environments. Evaporation is responsible for the greatest amount of water loss and management practices such as notill have been adopted to reduce evaporative losses. Less is known about the magnitude of water loss due to runoff. An objective of this study is to estimate an expected range in rainf...

2017
Humberto A. Barbosa Lakshmi Kumar

Dryland ecosystems cover one third of the earth’s total land surface, comprise areas with a ratio of average annual rainfall to evapotranspiration of less than 0.65 (MEA, 2005). These regions are fragile environments characterized by unreliable rainfall patterns and support livelihoods of over 2.5 billion people (Reynolds et al., 2007). Widespread episodes of drought, heavy precipitation and he...

2017
Kudzai Farai Kaseke Lixin Wang Mary K Seely

Dryland ecosystems cover 40% of the total land surface on Earth and are defined broadly as zones where precipitation is considerably less than the potential evapotranspiration. Nonrainfall waters (for example, fog and dew) are the least-studied and least-characterized components of the hydrological cycle, although they supply critical amounts of water for dryland ecosystems. The sources of nonr...

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