نتایج جستجو برای: time agricultural drought risk for barley crop at pre

تعداد نتایج: 12012437  

Drought is a complex phenomenon caused by the breaking of water balance and it has always an impact on agricultural, ecological and socio-economic spheres. Although the drought indices deriving from remote sensing data have been used to monitor meteorological or agricultural drought, there are no indices that can suitably reflect the comprehensive information of drought from meteorological to a...

Journal: :تحقیقات مهندسی کشاورزی 0
فاطمه میرزایی ندوشن دانش آموخته کارشناسی ارشد دانشگاه تهران سعید مرید دانشیار دانشگاه تربیت مدرس صالح ارشد دانش آموخته دکتری دانشگاه تربیت مدرس

agricultural drought has resulted in great damage to iran in recent years and it is crucial to cope with this adversity through logical management. one attempt in this regard is to compare affected sites and prioritize them for action plans. this paper develops a methodology for agricultural drought risk analysis based on rain-fed wheat data from kermanshah province and employs it to compare af...

Journal: :Journal of Experimental Botany 2008
Stephan Marzin Robert Mihaly Janos Pauk Patrick Schweizer

Drought is a serious, worldwide problem for crop production and also affects yields of barley and wheat, together with other stressors such as frost, viral diseases, or fungal pathogens. Although a number of candidate genes have been identified by transcriptome approaches in recent years, only very few have been tested in functional assays for a beneficial effect on drought tolerance. Here, a t...

2017
W. J. Waltman

Drought is the dominant process of crop loss nationally and within Nebraska. Nearly twothirds of the 18.6 million harvested acres are covered by crop insurance (USDA/RMA, 2003; USDA/NASS, 2003). For the most part, Nebraska’s crop losses range from $50 to 75 million in non-drought years, but the losses approach nearly $200 million in drought years, such as 2000. The past growing season (2002) cr...

2013
Olga Wilhelmi Kenneth Hubbard Donald A. Wilhite Olga V. Wilhelmi Kenneth G. Hubbard

Agricultural drought is the leading cause for crop failure throughout the world. In the USA, significant impacts of recent droughts on agricultural production indicate the continuing vulnerability of the country to drought. This paper presents a methodology for spatial representation of the agroclimatic component of agricultural drought vulnerability. This methodology was developed as a part of...

Journal: :International Journal of Environmental Science and Technology 2021

Drought reduces the quantity and quality of water resources ultimately increases risk agricultural activities at farm level. Therefore, by developing risk-based economic models, effects changes in on farmers' decisions should be examined. In this regard, drought farmers Qazvin Plain Irrigation Network have been evaluated. For purpose, firstly, river flow was simulated using Qual2k model 1998–20...

2017
Jerry E. Moorhead Prasanna H. Gowda Vijay P. Singh Dana O. Porter Thomas H. Marek Terry A. Howell

Drought is a complex and highly destructive natural phenomenon that affects portions of the United States almost every year, and severe water deficiencies can often become catastrophic for agricultural production. Evapotranspiration (ET) by crops is an important component in the agricultural water budget; thus, it is advantageous to include ET in agricultural drought monitoring. The main object...

H. Wagentristl H.-P. Kaul R.W. Neugschwandtner,

European agriculture suffers from a substantial deficit of protein sources forlivestock and the projected changes in agro-climatic conditions in Central Europeinclude a higher risk of drought. To address these challenges, the drought resistantlegume crop chickpea was compared with pea, barley and oat regarding its nitrogen(N) yield, protein yield and N use and utilization efficiency under Centr...

2013
Jahangir Alam

The Barind region of Bangladesh suffers from frequent drought due to poor and delayed rainfall in pre monsoon and monsoon season. In the present study details analysis of rainfall data has been carried out for the years 1971-2010. Two well known drought indices, Standard precipitation index (SPI) has been used to evaluate the precipitation deficit, and Markov chain model used to quantify the dr...

2016
Qing Pei David D. Zhang Harry F. Lee Guodong Li Sibylle Stöckli

Effective adaptation determines agricultural vulnerability to climate change, especially in the pre-industrial era. Crop management as an agricultural adaptation to climate change in recent human history, however, has rarely been systematically evaluated. Using Europe as our study area, we statistically compared yield ratio of wheat, rye, barley, and oats (an important performance indicator of ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید