نتایج جستجو برای: pan evaporation

تعداد نتایج: 48756  

2003
D. B. Parker B. W. Auvermann D. L. Williams

Evaporation estimates are often used in water balance calculations to determine seepage rates from feedyard holding ponds and lagoons. These estimates have been made using empirical equations derived for clear water, Class A Pan evaporation measurements using clear water, and rule-of-thumb estimates. However, feedyard effluent has different physical and chemical characteristics than clear water...

Journal: :چغندرقند 0
محمدرضا جهاداکبر محقق مر کز تحقیقات کشاورزی اصفهان مینا عقدایی محقق مر کز تحقیقات کشاورزی اصفهان حمیدرضا ابراهیمیان محقق مر کز تحقیقات کشاورزی اصفهان

in semiarid regions of iran, one of the crop production management methods is delayed irrigation after emergence. this is due to simultaneous water requirement of cereal and spring season crops. a field study was conducted in kabootarabad research station to investigate the effect of delayed irrigation on root yield, quality and growth trend using a rcb with four replications. the irrigation tr...

ژورنال: علوم آب و خاک 2008
سبزعلیان , محمدرضا, حاتمی, بیژن , خواجه علی, جهانگیر ,

Safflower having oil with high unsaturated fatty acids is a very valuable plant. However the sensitivity of safflower to some pests as safflower fly (Acanthiophilus helianthi), particularly in drought stress conditions has limited its production. In order to evaluate the effect of drought stress on population density and damage of important safflower pests, especially safflower fly, an experime...

Amiri, Seyed Reza , Salimi, Khaled , Ziaei, Seyed Masoud ,

Saravan is one of the arid regions of the country, so cultivating plants compatible with these areas can be effective in improving the province's agriculture. One of the most recently considered plants in the country is quinoa, which is resistant to adverse environmental conditions. Therefore, the present experiment was conducted with the aim of investigating the different levels of irrigation ...

2011
X. Jin Q. Zhang Y. Zhang

Evapotranspiration (ET) plays an important role in the hydrological cycle and it is essential to estimate ET accurately for the evaluation of available water resources in arid regions. In this paper, the monthly change of ET in the semi-arid Hailiutu River basin in northwest China were studied. The spatial distribution of ET was assessed by using the energy balance approach SEBS (Surface Energy...

آساد, محمدتقی , راضی, هومن ,

Two field experiments were conducted in 1996 at the experimental station, College of Agriculture, Shiraz University at Badjgah. Fourteen cultivars consisting of eight hybrids and six open pollinated cultivars were grown in two randomized complete block designs with four replications. The well-watered experiment received water when evaporation reached 65±5 mm from class A evaporation pan. The wa...

ژورنال: علوم آب و خاک 1998
آساد, محمدتقی , راضی, هومن ,

Two field experiments were conducted in 1996 at the experimental station, College of Agriculture, Shiraz University at Badjgah. Fourteen cultivars consisting of eight hybrids and six open pollinated cultivars were grown in two randomized complete block designs with four replications. The well-watered experiment received water when evaporation reached 65±5 mm from class A evaporation pan. The wa...

Journal: :African Journal of Agricultural Research 2013

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