نتایج جستجو برای: different growing stages

تعداد نتایج: 2046819  

2013
Jorrit F. de Kieviet Jaap Oosterlaan Annelies van Zwol Guenther Boehm Harrie N. Lafeber Ruurd M. van Elburg

Affiliations VU University Amsterdam, Department of Clinical Neuropsychology, Amsterdam, The Netherlands VU University Medical Center, Department of Physics and Medical Technology, Amsterdam, The Netherlands VU University Medical Center, Department of Pediatrics, Amsterdam, The Netherlands VU University Medical Center, Department of Pediatric Neurology, Amsterdam, The Netherlands Danone Researc...

Journal: :تحقیقات آب و خاک ایران 0
مجتبی شکوهی دانشجوی سابق کارشناسی ارشد، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران جواد بذرافشان استادیار پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، نوذر قهرمان استادیار پردیس کشاورزی و منابع طبیعی، دانشگاه تهران،

assessment of agricultural drought risk at critical times before and during the growing season can provide sufficient time to policy makers and farmers to implement appropriate strategies to reduce the potential of risk. the purpose followed in the present study is to develop a statistical model to estimate the quality of agricultural drought risk for rainfed barley crop (prior to planting and ...

Journal: :journal of agricultural science and technology 0
r. shamshiri department of agricultural and biological engineering, university of florida, gainesville, fl 32611, usa. p. van beveren farm technology group, wageningen university, p. o. box: 16, nl-6700ah wageningen, the netherlands. h. che man department of biological and agricultural engineering, universiti putra malaysia, serdang, 43400, malaysia. a. j. zakaria institute agropolis, universiti sultan zainal abidin, campus tembila, kuala terengganu, malaysia.

net-screen covered greenhouses operating on natural ventilation are used as a sustainable approach for closed-field cultivation of fruits and vegetables and to eliminate insect passage and the subsequent production damage. the objective of this work was to develop a real-time assessment framework for evaluating air-temperature inside an insect-proof net-screen greenhouse in tropical lowlands of...

Journal: :چغندرقند 0
محمدرضا میرزایی مربی پژوهشی مرکز تحقیقات کشاورزی و منابع طبیعی همدان سید معین الدین رضوانی مربی پژوهشی مرکز تحقیقات کشاورزی و منابع طبیعی همدان

in order to determine the effects of water deficit at different growth stages of sugar beet and optimal usage of water on quality and quantity characters of sugar beet, a factorial experiment based on randomized complete block design was conducted with 13 treatments and four replications in 2000 and 2001 in agricultural research center of hamadan. for the first factor, irrigation withheld in th...

Journal: :حفاظت گیاهان 0
معصومه نعمت پور نعمت اله پیردشتی محمد یعقوبی خانقاهی

a field experiment was conducted to investigate the spatial distribution of nutsedge (cyperus spp) during rice growing season using geostatic in 2011 at sari agricultural sciences and natural resources university. at the first field was divided into 36 grids (2.5×2.5 meter) after the final preparation. grid intersection points were determined and marked. all samples were taken from these points...

ژورنال: علوم آب و خاک 2004
مسعود علیخانی, , غلامرضا قربانی, , نسرین مهرداد, ,

In a completely randomized design with a factorial arrangement (3× 5× 3), three fistulated sheep with an average body weight of 47.5 ± 2.5 kg were used to determine the effect of cutting and growing stages (no bloom , early bloom and full bloom) on chemical composition and In situ degradability of alfalfa (Medicago sativa). Nylon bags (50 µm pore size) were filled with 3.5 g of each sample and ...

مسعود علیخانی, , غلامرضا قربانی, , نسرین مهرداد, ,

In a completely randomized design with a factorial arrangement (3× 5× 3), three fistulated sheep with an average body weight of 47.5 ± 2.5 kg were used to determine the effect of cutting and growing stages (no bloom , early bloom and full bloom) on chemical composition and In situ degradability of alfalfa (Medicago sativa). Nylon bags (50 µm pore size) were filled with 3.5 g of each sample and ...

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