نتایج جستجو برای: 13988 kgha and 14141 kgha
تعداد نتایج: 16827177 فیلتر نتایج به سال:
the cultivar was selected first based on individual plant selection from moghan's landrace population at agricultural research center of moghan in 1982. single plant selection from the population, evaluation of the single plants and yield trial of the selected lines were carried out for four years. seventy seven lines were selected and tested in two cosecutive preliminary yield trials whic...
Grain yield of bread wheat (Triticum aestivum L.) is reduced by heat stress, particularly when occurs in reproductive phase, in many countries worldwide, including Iran. In order to study the effects of different levels of nitrogen and cytokinin on wheat yield and yield components at normal and heat stress conditions in Khuzestan, Iran, this research was conducted at Ramin Agriculture and Natur...
Irrigation water deficit is an important factor that affect rice production in the world as well as Guilan province in Iran. Intermittent irrigation method can be applied to compensate for the water shortage in rice growing areas, however, it would affect other crop mangement practices such as fertilizer application and mangement. Therefore, this experiment was conducted to determine optimum fe...
oroum is a new bread wheat cultivar originated from the cross between cultivar alvand and an exotic wheat line (ns732/her) at oroumieh agricultural research station in 1995-96 cropping season. the f1 plants were grown in oroumieh in 1996-97 cropping season, however f2-f5 population and regional preliminary yield nursery were grown and evaluated at miandoab agricultural research station during 1...
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...
Livestock grazing practices in rangelands are being recognized as management tool for environmental protection and increased livestock productivity. Continuous grazing has been largely reported to reduce pasture productivity and increase environmental degradation. Rotational grazing is an alternative to continuous grazing and is considered to reduce negative environmental effects and provide qu...
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...
seed reserves are controlled by genetic and environmental condition such as nutrition, temperature, drought stress and light intensity. strong seedling will produce from seeds with high reserves. therefore, in this work that conducted in pot, field(in tabriz university) and lab(in shahrood university of technology) experiments, effect of pre-anthesis nitrogen application and a drought stress du...
milkthistle (silybum marianum l.) is a rangeland medicinal plant growing wild in different locations in iran. in the present research work, the effect of n, p and k in their different proportions of n0p0k0, n100p100k50, n150p150k100 and n200p200k150 kgha-1 as compared with control (no fertilizer application) on the plant's growth was put to test. suc variables as plant height, no. of capit...
به منظور بررسی تأثیر کودهای زیستی فسفر بر فراهمی فسفر خاک، عملکرد و میزان فسفر جذب شده در سیبزمینی (Solanum tuberosum L.) رقم ساوالان، آزمایشی در قالب طرح بلوکهای کامل تصادفی با سه تکرار در سال 1388 در مرکز تحقیقات کشاورزی و منابع طبیعی همدان اجرا گردید. تیمارها شامل 1) بدون استفاده از کود شیمیایی و زیستی (شاهد)، 2) 100 کیلوگرم سوپرفسفاتتریپل (TSP)، 3) 200 کیلوگرم (TSP) در هکتار، 4) 300 کیلو...
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