نتایج جستجو برای: winter wheat

تعداد نتایج: 100972  

Journal: :حفاظت گیاهان 0
روزبه فرهودی ندا کورش نژاد عادل مدحج

in order to evaluate the allelopatic potential of wheat aquatic extracts against winter wild oat (avena ludoviciana) at germiantion and vegetative growth stage two expriments were coducted in islamic azad university, shoushtar branch at 2012. germination expriment was laid out according to completely randomized design with four replications and treatments were various concentration of wheat ext...

2006
T. HERRMAN

consequence in the plots each year, and no supplemental inoculum of P. herABSTRACT Herrman, T., and Wiese, M. V. 1985. Influence of cultural practices on incidence of foot rot in potrichoides was added. winter wheat. Plant Disease 69:948-950. The three preplant tillage systems evaluated in this study were 1) conCrop rotation, preplant tillage, cultivar selection, nitrogen fertilization, and ben...

Journal: :به نژادی نهال و بذر 0
سیروس محفوظی s. mahfoozi seed and plant improvementموسسه تحقیقات اصلاح و تهیه نهال و بذر، کرج اشکبوس امینی a. amini seed and plant improvementموسسه تحقیقات اصلاح و تهیه نهال و بذر، کرج مهرداد چایچی m. chaichi center of hamedan, hamedan, iran.مرکز تحقیقات کشاورزی و منابع طبیعی همدان سید شهریار جاسمی s. sh. jasemi seed and plant improvementموسسه تحقیقات اصلاح و تهیه نهال و بذر، کرج محمود ناظری m. nazeri agricultural and natural resources research center of khorasan, mashhad,مرکز تحقیقات کشاورزی و منابع طبیعی خراسان، مشهد میر سعید عابدی اسکویی m. s. abedi oskooie agricultural andمرکز تحقیقات کشاورزی و منابع طبیعی آذربایجان شرقی، تبریز غلامرضا امین زاده

development of new cultivars with high grain yield (gy) stability and good adaptability under both terminal drought stress (tds) and normal irrigation conditions, which plays important role in production of wheat, is one of the major goals of wheat breeding program for cold dry areas of iran. the objective of this investigation was to study the stability and adaptability of gy and genotype × lo...

2013
M. C. Feng J. J. Wang C. Wang W. D. Yang H. Q. Wang L. J. Xiao Y. H. Song L. M. gao M. J. ZHang W. Ding

Feng, M. C., J. J. Wang, C. Wang, W. D. Yang, H. Q. Wang, L. J. Xiao, Y. H. Song, L. M. gao, M. J. ZHang and g. W. Ding, 2013. Response of winter wheat (Triticum aestivum L.) spectral reflectance characteristics to chlorophyll content in planting densities application rate. Bulg. J. Agric. Sci., 19: 1190-1197 The leaf chlorophyll content of wheat is one of important agronomic parameters to anal...

2009
Yansong BAO Wei GAO Zhiqiang GAO

Biomass can indicate plant growth status, so it is an important index for plant growth monitoring. This paper focused on the methodology of estimating the winter wheat biomass based on hyperspectral field data, including the LANDSAT TM and EOS MODIS images. In order to develop the method of retrieving the wheat biomass from remote sensed data, routine field measurements were initiated during pe...

2005
David C. Nielsen

a system has been referred to as green fallow (Gardner et al., 1993). These systems have sometimes been sucGrowing a legume cover crop in place of fallow in a winter wheat cessful in the cooler regions of the northern Great Plains (Triticum aestivum L.)–fallow system can provide protection against (Zentner et al., 2001). Zentner et al. (2004) reported that erosion while adding N to the soil. Ho...

Journal: :Journal of economic entomology 2000
K L Giles T A Royer N C Elliott S D Kindler

From 1997 to 1999, Schizaphis graminum (Rondani), intensity (number per tiller) was estimated on 115 occasions from hard red winter wheat fields located throughout the major wheat growing regions of Oklahoma. A total of 32 and 83 fields was sampled during the fall and spring, respectively. The parameters of linear regressions relating the mean number of greenbugs per tiller (m) and the proporti...

Journal: :Plant physiology 2008
Jill C Preston Elizabeth A Kellogg

Members of the grass subfamily Pooideae are characterized by their adaptation to cool temperate climates. Vernalization is the process whereby flowering is accelerated in response to a prolonged period of cold. Winter cereals are tolerant of low temperatures and flower earlier with vernalization, whereas spring cultivars are intolerant of low temperatures and flower later with vernalization. In...

2011
Y. H. Chen X. B. Zhou

Zhou, X. B. and Y. h. Chen, 2011. Yield response of winter wheat to row spacing under irrigated and rainfed conditions. Bulg. J. Agric. Sci., 17: 158-166 In China, wheat (Triticum aestivum L.) is cultivated across a wide range of climatic conditions. The average rainfall was recorded at 696.6 mm per year from 1971 to 2008 at Taian in northern China. Considerable variability in the row spacing (...

2002
W. E. Thomason W. R. Raun G. V. Johnson K. W. Freeman K. J. Wynn R. W. Mullen

Most current research on winter wheat (Triticum aestivum L.) focuses on increasing yields of either grain or plant biomass. Increased production costs and environmental awareness will promote the development of methods to increase the efficiency of applied nutrients. Nitrogen (N) is often the most limiting nutrient for cereal grain production and represents one of the highest input costs in agr...

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