نتایج جستجو برای: and 2 nitrogen fertilizer rates 0

تعداد نتایج: 17374398  

Journal: :بوم شناسی کشاورزی 0
ناهید جعفری مسعود اصفهانی علیرضا فلاح

in order to study the effects of simultaneous application of znso4 and biological fertilizer, azotobacter chroococcum and azospirillum brasilense, on grain yield and nitrogen uptake efficiency in rapeseed (brassica napus l.), cv. hyola308, a field experiment was conducted as split plot factorial based on randomized complete block design at research field of faculty of agricultural sciences, uni...

ژورنال: علوم آب و خاک 2002
یحیی پرویزی, , عبدالمجید رونقی, , نجف ‌علی کریمیان, ,

Nitrogen is usually the most limiting nutrient for crop production. Manganese deficiency in some calcareous soils of Iran has been reported. The objective of this study was to evaluate the effect of N and Mn on the growth and chemical composition of spinach (Spinacia oleracea L.) under greenhouse conditions. The experiment was conducted in a soil from Chitgar series (Fine-loamy, carbonatic, the...

یحیی پرویزی, , عبدالمجید رونقی, , نجف ‌علی کریمیان, ,

Nitrogen is usually the most limiting nutrient for crop production. Manganese deficiency in some calcareous soils of Iran has been reported. The objective of this study was to evaluate the effect of N and Mn on the growth and chemical composition of spinach (Spinacia oleracea L.) under greenhouse conditions. The experiment was conducted in a soil from Chitgar series (Fine-loamy, carbonatic, the...

Journal: :بوم شناسی کشاورزی 0
رستم یزدانی بیوکی پرویز رضوانی مقدم علیرضا کوچکی محمدبهزاد بهزاد امیری جبار فلاحی رضا دیهیم فرد

in order to study the effects of different levels of drought stress and plant growth promoting rhizobacteria on the germination indices of seeds harvested from wheat (tritium aestivum l.) cv. sayonz in the field treated with different levels of nitrogen, in controlled conditions, a factorial layout based on completely randomized design with three replications, was conducted. treatments included...

Journal: :Environmental Systems Research 2021

Abstract Bread wheat ( Triticum aestivum L.) is one of the most important cereal crops in Ethiopia. The productivity markedly constrained by nutrient depletion and inadequate fertilizer application. experiment was conducted to study effect nitrogen (N) potassium (K) rates on growth, yield, uptake use efficiency during 2019 cropping season Kedida Gamela Woreda , Kembata Tembaro Zone Southern Fac...

The use of organic and biological fertilizers is important for achieving sustainable agriculture, reducing the application of chemical fertilizers and the production of healthy crops. A greenhouse experiment was carried out to study the effects of vermicompost, Nitragin, and nitrogen on some growth parameters of strawberry (Fragariaananassa Duch. cv. Aromas). Treatments were arranged in a facto...

2004
Susan E. Powers

The production of corn or soybeans for bio-based fuels and materials requires significant inputs of nitrogen (FN) and phosphorus fertilizer (FP) to increase grain yields. Approximately 50% of these nutrients are integrated into plant biomass. The remaining 50% is volatilized, leached into surface and groundwater, or transformed into gaseous species such as N2, NO, or N2O. Recent efforts to comp...

Journal: :به زراعی کشاورزی 0
نرگس دولتمند شهری فارغ التحصیل کارشناسی ارشد زراعت، گروه زراعت واصلاح نباتات، دانشکده کشاورزی، دانشگاه کردستان، سنندج - ایران ایرج طهماسبی استادیار گروه زراعت واصلاح نباتات، دانشکده کشاورزی، دانشگاه کردستان، سنندج - ایران

a field experiment was conducted in order to study the effect of nitrogen fertilizer and plant density on yield and quality of maize (zea mays l.) cultivar, mv500 silage as second crop. this study was conducted in agricultural research station of kurdistan university during 2012 growing season. the experiment was laid out as split plot based on randomized complete block design with three replic...

1999
R. L. Kolberg D. G. Westfall

span of years also greatly affects C and N dynamics. Wood et al. (1990) measured greater potentially minerCycling of N through an agroecosystem can be managed more alizable C and N in surface soils of a wheat–corn–millet– effectively if effects of N management and cropping sequence on soil fallow (WCMF), 4-yr rotation than a WF, 2-yr rotation. N microbial processes are understood. Effects of cr...

Journal: :علوم گیاهان زراعی ایران 0
فرناز فرجی دانشجوی سابق کارشناسی ارشد دانشکده علوم کشاورزی دانشگاه گیلان، مسعود اصفهانی دانشیار دانشکده علوم کشاورزی دانشگاه گیلان مسعود کاووسی دانشیار پژوهش موسسه تحقیقات برنج کشور مجید نحوی استادیار پژوهش موسسه تحقیقات برنج کشور بابک ربیعی دانشیار دانشکده علوم کشاورزی دانشگاه گیلان،

in order to evaluate the effects of nitrogen levels and its split application on growth indices and their relationship with grain yield of rice (cv. khazar), a field experiment was conducted at rice research institute of iran with 11 treatments arranged in a randomized complete block design with 3 replications in 2008. nitrogen fertilizer levels (10, 20 and 30 kg.ha-1) were applied according to...

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