نتایج جستجو برای: firstly to estimate sowing date of rainfed wheat

تعداد نتایج: 22170649  

Journal: :کشاورزی (منتشر نمی شود) 0
عبدالامیر محیسنی استادیار پژوهش مرکز تحقیقات کشاورزی و منابع طبیعی استان لرستان،ایستگاه تحقیقات کشاورزی بروجرد، لرستان ابراهیم سلیمان نژادیان دانشیار گروه گیاهپزشکی، دانشکده کشاورزی، دانشگاه شهید چمران اهواز، خوز غلام رضا رجبی استاد پژوهش مؤسسه تحقیقات گیاهپزشکی کشور، تهران محمد سعید مصدق استاد گروه گیاهپزشکی، دانشکده کشاورزی، دانشگاه شهید چمران اهواز، خوزستان محمد پیرهادی مربی پژوهش مرکز تحقیقات کشاورزی و منابع طبیعی لرستان، ایستگاه تحقیقات کشاورزی بروجرد، لرستان عزت اله نباتی مربی پژوهش مرکز تحقیقات کشاورزی و منابع طبیعی لرستان، ایستگاه تحقیقات کشاورزی بروجرد، لرستان

sunn pest (eurygaster integriceps put.) cause serious economic damage to wheat and barley in borujerd, north of lorestan province, iran. sweep net sampling, is the most convenient sampling procedure for many arthropods, but it is difficult to interpret in terms of accuracy and precision. much of the variation of sweep net catches, stems from human factors and its calibration. in this research, ...

Akram Pasandideh Tashakori Mohammad Hossein Ghorbani

This study was conducted at the Gorgan University of Agricultural Sciences and Natural Resources farm, Iran, Golestan province with about 600 mm annual rainfall in order to evaluate the effect of different sowing dates on Azivash (Corchorusolitorius) seed quality, using a randomized complete block design with three replications on 2013. Treatments were four sowing dates such as May 5, ...

Journal: :علوم گیاهان زراعی ایران 0
سید احمد کلانتر احمدی قدرت اله فتحی

to study the effect of seed sowing rate, different levels of nitrogen and different sowing dates on canola cultivar hyola401, a field experiment was conducted during 2005-2006 at safiabad agricultural research center. the design was a split split plot in a completely randomized block basis of 3 replications. main plots consisted of 3 levels of sowing dates (6, 26 nov and 16 dec), sub plots of 3...

Journal: :Pesquisa Agropecuária Brasileira 2016

2016
Sulin Tao Shuanghe Shen Yuhong Li Qi Wang Ping Gao

A sensitivity analysis of the responses of crops to the chosen production adaptation options under regional climate change was conducted in this study. Projections of winter wheat production for different sowing dates and cultivars were estimated for a major economic and agricultural province of China from 2021 to 2080 using the World Food Study model (WOFOST) under representative concentration...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم انسانی 1389

there are two major theories of measurement in psychometrics: classical test theory (ctt) and item-response theory (irt). despite its widespread and long use, ctt has a number of shortcomings, which make it problematic to be used for practical and theoretical purposes. irt tries to solve these shortcomings, and provide better and more dependable answers. one of the applications of irt is the as...

Journal: :پژوهش های حبوبات ایران 0
رحیم بیات سیدحسین صباغ پور علی حاتمی علی اشرف مهرابی

in order to evaluate the effect of different levels of sowing dates and plant density on grain yield and its components in chickpea var. arman, a field study was conducted at ekbatan research field station of agricultural and natural resources research center of hamedan province under rainfed condition during 2009-2010 cropping season. treatments were arranged as split plot on the basis of rand...

Chickpea (Cicer arietinum L.) is a native crop of Asia which is grown worldwide including Iran.In this study,different selection criteria including correlation,regression and path analysis were used to improve yield.The experimental design was split plot with RCBD replicated four times in which three sowing dates (5 January,4 February,and 5 March) were used in main plots and four genotypes;two ...

Akram Pasandideh Tashakori Mohammad Hossein Ghorbani

This study was conducted at the Gorgan University of Agricultural Sciences and Natural Resources farm, Iran, Golestan province with about 600 mm annual rainfall in order to evaluate the effect of different sowing dates on Azivash (Corchorusolitorius) seed quality, using a randomized complete block design with three replications on 2013. Treatments were four sowing dates such as May 5, ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده ریاضی 1390

the main objective in sampling is to select a sample from a population in order to estimate some unknown population parameter, usually a total or a mean of some interesting variable. a simple way to take a sample of size n is to let all the possible samples have the same probability of being selected. this is called simple random sampling and then all units have the same probability of being ch...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید