نتایج جستجو برای: 019 and grain yield027

تعداد نتایج: 16838303  

Journal: :فصلنامه علمی اکوفیزیولوژی گیاهان زراعی 0
میترا بختیاری دانشجوی دکتری زراعت، دانشگاه آزاد اسلامی، واحد شهر قدس پیام معاونی استادیار ،گروه زراعت ، دانشکده کشاورزی، دانشگاه آزاد اسلامی واحد شهرقدس بهزاد ثانی استادیار، مدیر گروه زراعت، دانشکده کشاورزی، دانشگاه آزاد اسلامی، واحد شهر قدس

this experiment was done to evaluate the effect of nano iron oxide on some morphophysiological traits  of wheat (triticum aestivum l.) at  shahr-e qods region  in years of 2013 and 2014. experimental design, was factorial in a randomized complete block with four replications. treatments included, treatment of date of nano iron sparaying in milky  and pasty stage and another treatment was, conce...

Water deficit is one of the most important abiotic factors limiting growth, which adversely affect growth and crop production. In order to study the relationship between kernel size and phenological characteristics on grain yield, 46 local bread wheat genotypes along with four varieties were evaluated in randomized complete block design with three replications under irrigation and water deficit...

سید علی‌محمد میر‌محمدی‌میبدی, , عبدالمجید رضائی, , حسین صبوری, , مسعود اصفهانی, ,

An experiment was conducted at Rasht Rice Research Institute, in 2001 to study trait relationships and to determine the direct and indirect effects of different characteristics on grain yield of rice (Orgza sativa L.). A 9x2 factorial experiment in complete randomized block design with 3 replications was used. The two factors were 9 cultivars, namely: Hashemi, Ali Kazemi, Binam, Sepeedroud, Nem...

Journal: :تولید گیاهان زراعی 0

during grain development, appropriate water status of soil has key importance for starch accumulation in grains and hormone changes. for this, the study carried out on two iranian wheat cultivars pishtaz and karaj 3 in a factorial experiment based on randomized complete block design with three replications under irrigated and drought in a field experiment at research farm of agriculture college...

1999
S. Sirono

Energy dissipation on collisions of grain aggregates is investigated taking into account effects by sintering. It is shown that sintering significantly reduces the energy dissipation efficiency because contacts between adjacent grains become strong by sintering.

2014
Shelley H Jansky Diego A Fajardo

Cold-induced sweetening (CIS) is the accumulation of reducing sugars in potato tubers at low storage temperatures. It is undesirable because it results in dark fry products. Our study evaluated the relationship between genetic resistance to CIS and two starch parameters, amylose content and starch granule size. We found that the amylose content in four CIS-resistant varieties was higher than th...

2003
H. Yang

The Haihe River basin is one of the most developed regions in China. With the rapid economic development and associated increases in water demand, the river basin has been enduring increasing water stress. Water for the ecosystem use has been compromised and the environment has been deteriorating. Water shortage has become a bottleneck to the further development of the economy and grain product...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1999
D G Johnson

The rate of growth of world food demand will be much slower for 1990-2010 than it was for the prior three decades. The major factor determining the increase in food demand is population growth. Income growth has a much smaller effect. From 1960 to 1990, population growth accounted for approximately three fourths of the growth in demand or use of grain. For 1990-2010, it is anticipated that popu...

2011
David Robert Martin Thompson Samantha Leung Kevin Leyton-Brown

The support-enumeration method (SEM) for computation of Nash equilibrium has been shown to achieve state-of-the-art empirical performance on normal-form games. Action-graph games (AGGs) are exponentially smaller than the normal form on many important classes of games. We show how SEM can be extended to the AGG representation, yielding an exponential improvement in worst-case runtime. Empiricall...

Journal: :علوم گیاهان زراعی ایران 0
ایرج لک زاده مرکز تحقیقات کشاورزی و منابع طبیعی خوزستان احمد نادری مرکز تحقیقات کشاورزی و منابع طبیعی خوزستان

in order to determine the optimum planting date under deficit output area, this research was carried-out in 2010-11 and 2011-12 cropping seasons, in split-plot arrangement, using complete randomized block design with three replications in khuzestan agriculture and natural resource research center. main and sub plots were consisted of four planting dates (oct. 27 with 10 days interval) and four ...

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