نتایج جستجو برای: 2 and very severe drought less than
تعداد نتایج: 17340654 فیلتر نتایج به سال:
drought is one of the most important factors limiting growth and yield in many parts of the world. in order to evaluate the effects of drought stress on some morphological and physiological traits of two cultivars of bean, two red beans (derakhshan and goli) in four drought treatments including 25%, 50%, 75%, control 100% field capacity were studied in a factorial experiment based on complete r...
Water shortage is one of the most important limiting factors for crop production, that affected growth and yield by changing physiological conditions. This study was carried out to investigate effect of oxidative stress on antioxidant defense mechanism in Research greenhouses of Birjand University in 2014. A factorial arrangement of treatments based on randomized complete block design (Due to...
drought is one of the most important weather-induced phenomena which may have severe impacts on different areas such as agriculture, economy, energy production, and society. a number of drought indices have been introduced and used in various countries to date. in the current study, four meteorological drought indices including percent of normal precipitation index (pnpi), standard index of ann...
Introduction Climate change conditions have been deteriorated in recent years due to increasing emissions of greenhouse gases, whose negative effects on human societies are one of the major concerns in 21st century, leading to introduction of several scenarios for predicting the climate parameters affected by increasing emissions of greenhouse gases. Therefore, this study sought to investigate...
Recognition of spatial patterns of drought plays an important role in monitoring, predicting, confronting, reducing vulnerability, and increasing adaptation to the hazard. The aim of this study is to identify the spatial distribution and analyze the annual, seasonal, and monthly spatial patterns of drought intensities in Iran. For this purpose, drought intensities were extracted from the month...
In order to assess the status of the iron (Fe) chlorosis of plane trees in green space of Isfahan city, the chlorosis intensity of 73 trees in different regions was recorded as (1): low (less than 5% of leaves), (2): moderate (less than 50% of leaves), (3): severe (more than 50% of leaves), and (4): very severe (more than 95% of leaves). The whole leaf (with petiole) samples were take...
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 ...
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 ...
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