نتایج جستجو برای: dryland barley

تعداد نتایج: 20164  

2006
T. L. Stubbs

of Research Findings Soil quality parameters were assessed at several long-term dryland cropping systems research sites in eastern Washington to further define management practices that are soil building rather than degrading. The objective was to characterize soil quality changes over time as affected by no-till versus traditional tillage-based management systems. Soil organic carbon slowly in...

2015
D. C. Le Maitre M. B. Gush S. Dzikiti

There have been many studies of the diverse impacts of invasions by alien plants but few have assessed impacts on water resources. We reviewed the information on the impacts of invasions on surface runoff and groundwater resources at stand to catchment scales and covering a full annual cycle. Most of the research is South African so the emphasis is on South Africa's major invaders with data fro...

احمد جلالیان, , حسین خادمی, , مریم یوسفی فرد, ,

Improper use of natural resources, especially soil, causes its degradation and severe soil erosion. Water erosion is an important factor causing soil degradation. Land use change of pasture would result in severe soil erosion mainly due to the reduction of vegetation cover and also surface soil disturbance. The objectives of this study were to estimate the amount of sediment, runoff and nutrien...

2017
J. Allen Williams Lynn K. White David R. Johnson

امام, یحیی , تدین, محمودرضا,

  Photosynthesis and wheat grain yield responses to supplemental irrigation with different amount of applied water under dryland conditions were investigated. Therefore, a two-year field experiment was conducted research farm of College of Agriculture, Shiraz University during 2004-2005. Five levels of irrigation including dryland conditions, irrigation at stem elongation, booting, flowering an...

2010
Sujith Ravi David D. Breshears Travis E. Huxman Paolo D'Odorico

a r t i c l e i n f o Land degradation in drylands is one of the major environmental issues of the 21st century particularly due to its impact on world food security and environmental quality. Climate change, shifts in vegetation composition, accelerated soil erosion processes, and disturbances have rendered these landscapes susceptible to rapid degradation that has important feedbacks on regio...

2017
Xinyi Liu Diane L Lister Zhijun Zhao Cameron A Petrie Xiongsheng Zeng Penelope J Jones Richard A Staff Anil K Pokharia Jennifer Bates Ravindra N Singh Steven A Weber Giedre Motuzaite Matuzeviciute Guanghui Dong Haiming Li Hongliang Lü Hongen Jiang Jianxin Wang Jian Ma Duo Tian Guiyun Jin Liping Zhou Xiaohong Wu Martin K Jones

Today, farmers in many regions of eastern Asia sow their barley grains in the spring and harvest them in the autumn of the same year (spring barley). However, when it was first domesticated in southwest Asia, barley was grown between the autumn and subsequent spring (winter barley), to complete their life cycles before the summer drought. The question of when the eastern barley shifted from the...

Journal: :Proceedings of the New Zealand Grassland Association 1966

2010
E Parand A Taghizadeh

Introduction Different barley varieties have been shown to affect in vitro dry-matter digestibility (IVDMD), ruminal starch digestion and animal performance (Boss and Bowman, 1996). Some of these differences may be due to differences in site and extent of nutrient digestion among barley varieties. Little information is available on digestive characteristics of different barley varieties and sev...

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