نتایج جستجو برای: leaf stage on grain yield

تعداد نتایج: 8694228  

عباس ستوده نیا, عبد المجید لیاقت مسعود سلطانی

Supplementary irrigation is one of the most effective field management practices to improve water productivity and crop yield in rainfed conditions. Time of supplementary irrigation is another important parameter affecting the enhancement of yield. In order to study the effect of supplementary irrigation time as well as planting date, two factors, namely: 1) supplementary irrigation (No irrigat...

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...

Nejatkhah, , Rafiei, , Sarshad, , Talei, , Torabi, ,

In order to investigate the effect of water deficit tension on different growth stages on yield, yield components and produced grain quality of sorghum seeds cultivars,  an experiments was performed as split plots based on randomized complete blocks design with four replications in Isfahan Ghiam Cultivation and Cattle Farm Company in 2017. The main factor including irrigation cut at four levels...

2009
Antanas Ronis Roma Semaškienė Zenonas Dabkevičius Žilvinas Liatukas

Leaf diseases’ influence the relationship between the yield and yield components of winter wheat (Triticum aestivum L.). Field experiments were conducted during 2003–2006 on a light loamy gleyic cambisoil in the central part of Lithuania to determine how leaf disease severity level affects grain yield and yield components. The area under disease progress curves (AUDPC), grain yield and yield co...

Q.W Xue Y.H. Yang Y.P. Zhang Z.M Wang

The remobilization of water soluble carbohydrates (WSC) has an important role for grain yield. This study investigated the accumulation and remobilization of WSC in non-leaf organs (chaff, upper stem, and lower stem) and their contribution to grain yield, under different irrigation levels (rainfed, reduced irrigation, and full irrigation) and seeding rate treatments (450, 600 and 750 plants...

2013
Toshihiro Sakamoto Anatoly A. Gitelson Timothy J. Arkebauer

a r t i c l e i n f o A crop yield estimation model using time-series MODIS WDRVI was developed. The main feature of the proposed model is the incorporation of crop phenology detection using MODIS data, called the " Shape-Model Fitting Method ". MODIS WDRVI taken 7–10 days before the corn silking stage had strong linear correlation with corn final grain yield at both field and regional scales. ...

Journal: :زراعت دیم ایران 0
مهری صفاری دانشکده کشاورزی، دانشگاه شهید با هنر کرمان محمد مددی زاده دانشکده کشاورزی، دانشگاه شهید با هنر کرمان

in order to study the effects of nitrogen and complementary irrigation on yield and its components of rainfed barley sahand cultivar, an experiment was conducted on split plot based on randomized completely block design with four replication in baft area at 2009-2010. factors were: four levels of nitrogen (0, 20, 40 and 60 kg/ha as pure nitrogen) from urea source as factor b and four levels of ...

Journal: :Journal of experimental botany 2005
Toshiyuki Takai Yoshimichi Fukuta Tatsuhiko Shiraiwa Takeshi Horie

Grain-filling is a crucial process that determines final grain yield in rice (Oryza sativa L.). To understand the genetic basis of dynamics of grain-filling, quantitative trait locus (QTL) analysis was conducted using time-related phenotypic data on grain-filling collected from a population of 155 recombinant inbred lines (F12), derived from a cross between Milyang 23 and Akihikari. Two QTLs de...

Journal: :به زراعی کشاورزی 0
سمانه اسدی صنم دانشجوی دکتری، گروه زراعت و اصلاح نباتات، دانشکدة علوم کشاورزی، دانشگاه گیلان، رشت، ایران محسن زواره استادیار، گروه زراعت و اصلاح نباتات، دانشکدة علوم کشاورزی، دانشگاه گیلان، رشت، ایران حسن شکری واحد مربی پژوهش، بخش خاک و آب، مؤسسة تحقیقات برنج کشور، رشت، ایران پریسا شاهین رخسار مربی پژوهش، بخش فنی و مهندسی، مرکز تحقیقات کشاورزی و منابع طبیعی گیلان، رشت، ایران

a randomized complete block design with three replications was performed in rice research institute of iran, rasht in 2008, to find the effect of supplement foliar application of nitrogen and potassium on ’daylam‘ hybrid rice grain yield, its components and grain protein percentage. foliar application of 20 kg nitrogen (5 percent n) and 15 kg potassium (3 percent k2o) in different pre-anthesis ...

Journal: :علوم گیاهان زراعی ایران 0
محمد میرزایی حیدری میرزا حسین نوری علی خورگامی پیام پزشک پور احمد ارزانی

to investigate the effect of plant density and supplemental irrigation on agronomic characteristics, chlorophyll content and light interception beneath the canopy of three chickpea genotypes under dryland conditions, an experiment was conducted at research station of lorestan agricultural research center located at chegini, khoramabad, during 2004-2005. the study was conducted using a split-spl...

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