نتایج جستجو برای: based methods capabilities in wheat yield predication in wheat fields

تعداد نتایج: 17716275  

2015
P. Sandaña

The aim of the present study was to evaluate the response of grain yield, phosphorus (P) use efficiency (PUE, g yield g–1 P available) and related root traits of wheat and pea to different P availabilities in a high yielding environment (e.g.: yield higher than 10 Mg ha-1 for wheat). Two experiments were conducted in southern Chile. Treatments consisted of the combination of (i) two crops (spri...

2003
K. J. Larson L. Herron

Nitrogen fertilizer is commonly applied to winter wheat in the High Plains to achieve moderate to high yields. Typically, anhydrous N is applied in the summer or early fall with a tillage operation. Some growers apply liquid N in the spring if winter and spring moisture are high to take advantage of higher yielding condition. Phosphate fertilizer is less frequently used on winter wheat than N f...

Farzad Paknejad M. Shojaei Poor Mehrdad Esfandiari, S.R. Hassanpour Avanji,

In order to study planting date impacts and ending season drought stress  on grain yield and  gaining weight  rate  and wheat filling period characteristics in new advanced bread wheat genotypes ,this research  is done by using plan statistical  of spilt plot  in form of complete random blocks basic  plot with 3 replications in both common separated irrigation  and ending season drought  stress...

Journal: :تولید گیاهان زراعی 0
حمید عباس دخت دانشگاه صنعتی شاهرود هادی قربانی دانشگاه شاهر.د مهدی رستمی دانشگاه شاهرود

in this study, we aimed to determine the effects of halo-priming on yield and yield components of four wheat cultivars in a saline soil. a field study was conducted in factorial based on randomized complete block design (rcbd). soil ph was 8/1 and electrical conductivity was 9 ds/m. wheat cultivars (falat, ghods, chamran and shoori4) were primed with cacl2 solutions (control, 0, 50 and 100 mm)....

Journal: :چغندرقند 0
ابوذر پرهیزکاری دانشجوی دکترای دانشگاه تهران، واحد پیام نور و محقق مرکز تحقیقات کشاورزی و منابع طبیعی استان قزوین محمد مهدی مظفری استادیار گروه مدیریت صنعتی دانشگاه بین الملل امام خمینی (ره) قزوین مهدی حسینی خدادادی دانشجوی دکترای اقتصاد کشاورزی دانشگاه زابل رویا پرهیزکاری کارشناس ارشد مدیریت صنعتی دانشگاه بین الملل امام خمینی (ره) قزوین

sugar beet is one of the major products in qazvin plain that allocated most of planting areas to itself after wheat, barley and corn. in recent years, restriction on water resources decreased sugar beet planting area in this plain. therefore, in this study, the effects of increase in sugar beet planting area on planting pattern, grower's gross profit, and inputs utilization under water sho...

2014
Junming Liu Jianxi Huang Liyan Tian Hongyuan Ma Wei Su Wenbin Wu Raaj Ramsankaran Xiaodong Zhang Dehai Zhu

In this study, a regional winter wheat yield prediction method was developed by integration of time series of Moderate-Resolution Imaging Spectroradiometer MODIS LAI products (MOD15A2) with WOrld FOod STudies (WOFOST) model through Ensemble Kalman Filter (EnKF) algorithm at the regional scale in the Hengshui District, Hebei province in China. WOFOST model was selected as the crop growth dynamic...

Journal: :علوم گیاهان زراعی ایران 0
حسین اورکی دانشجوی دکتری، گروه زراعت، دانشکدة کشاورزی، دانشگاه تربیت مدرس سید علی مدرس ثانوی استاد، گروه زراعت، دانشکدة کشاورزی، دانشگاه تربیت مدرس اسکندر زند استاد، مؤسسة تحقیقات گیاه پزشکی کشور علی مختصی بیدگلی استادیار، گروه زراعت دانشکده کشاورزی دانشگاه تربیت مدرس

to study the effects of carbon dioxide enrichment on morphological, nutrient absorption and yield of wheat (triticum aestivum l. cv. pishtaz) under weed competitive pressure of wild oat (avena ludovicianal.), an experiment was conducted as a split plot based on a randomized completely block design during the 2013-2014 growing season at the research field of tarbiat modares university, iran. car...

Journal: :پژوهش های زراعی ایران 0
محمد شریفی الحسینی مسعود عزت احمدی

in order to investigation of response of durum wheat genotypes to terminal drought stress, this experiment was conducted in neishabour agricultural research station during two growing seasons of 2004-2005 and 2005-2006. seventeen advanced durum wheat genotypes, two bread wheat cultivars and one durum wheat cultivar (i.e. 20 genotypes and cultivars) were evaluated in two separate experiments (no...

2016
Ramazan Gencer Figen Mert-Turk

Fusarium culmorum is one of the most important causal agents of Fusarium head blight (FHB), results in yield and quality reductions and mycotoxin accumulation. It predominates on cereals in North-West of Turkey in cereal growing fields. In this research the aggressiveness among the F. culmorum isolates and reduction on yield was evaluated. Two wheat varieties (Golia and Ceyhan) and 16 isolates ...

Journal: :international journal of agricultural science, research and technology in extension and education systems 2012
afshin morovvat mostafa emadi mosa shojae ahmad pakpour leila gholami

crop yields are dependent on a number of factors such as soil type, weather conditions and farming practices. crop yield estimates in different soil types are required to meet the needs of farmers, land appraisers, and governmental agencies in iran as around the world. this study was conducted to model the wheat-grain yields [triticum aestivum l.]  by soil properties in khoy area, the north-wes...

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