نتایج جستجو برای: reduced tillage and conventional tillage systems the highest seed yield was observed in no

تعداد نتایج: 24654355  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی عمران 1391

in this study, scour of mashkid bridge pier located in mashkid river of saravan county has been studied and to measure the scour rate, the numerical model hec-ras 4.0 has been used. upon selection of mashkid river as the case study and whereas the studied zone is important with respect to the climatic conditions and showery monsoon raining and flowing the great and destructive floodwaters, ther...

Journal: :پژوهش های زراعی ایران 0
مجید روزبه جانب اله نیازی

one of the main strategy for controlling salt-affected soils is to implement proper tillage method. a field experiments was conducted to determine the effect of different tillage methods on salt distribution and wheat yield in saline-sodic soil. the experiment was laid out according to randomized complete block design with three replications. treatments were studied in the experiment including ...

Journal: :علوم گیاهان زراعی ایران 0
عبدالواحد هودیانی دانشجوی کارشناسی ارشد آگرواکولوژی، گروه زراعت، دانشکدة کشاورزی، دانشگاه زابل مهدی دهمرده استادیار، گروه زراعت، دانشکدة کشاورزی، دانشگاه زابل عیسی خمری استادیار، گروه زراعت، دانشکدة کشاورزی، دانشگاه زابل محمد رضا اصغری پور دانشیار گروه زراعت، دانشکدة کشاورزی، دانشگاه زابل

a field experiment was conducted at research station of zabol university in 2012. the experiment carried out as split plot on basis of a randomized complete block design with three replications. the main and sub factors included tillage systems (no, reduced, and conventional tillage) and planting ratios of intercropping (pure culture of roselle, pure culture of green gram, 25% roselle + 75% gre...

Journal: :علوم گیاهان زراعی ایران 0
محمود رمرودی داریوش مظاهری ناصر مجنون حسینی عبدالهادی حسین زاده سید محمد باقر حسینی

to evaluate the effect of cover crops, tillage systems and nitrogen (n) application rates on yield of forage sorghum (cv. kfs3), a factorial–spilt plot arrangement based on randomized complete block design with four replications was carried out at the research farms college of agriculture and natural resources, university of tehran, karaj, during the growing seasons of years 2005 and 2006. comb...

Journal: :ماشین های کشاورزی 0
جبرائیل تقی نژاد ارژنگ جوادی

this study carried out to evaluate the effect of different tillage systems on rapeseed yield (hayola 401) planted in corn residues. this experiment was done in moghan region with clay soils during 2009-2012. different seedbed preparation methods include mt: moldboard + disk tillage (conventional tillage was included), sct: stem crusher + chisel + disk tandem harrow, stt: stem crusher + double-d...

Journal: :بوم شناسی کشاورزی 0
احمد قاسمی احمد قنبری براتعلی فاخری حمیدرضا فنایی

introduction due to the development of sustainable agriculture and the reduction of utilizing chemical fertilizers, it is essential to use organic fertilizer. organic matter is vital to soil fertility and its productivity. to maintain the level of fertility and the strength of soil, organic matter levels should be maintained at an appropriate level. unfortunately, the level of organic matter in...

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

growing demands and requires of high data rate systems cause significant increase of high frequency systems for wideband communication applications. as mixers are one of the main blocks of each receivers and its performance has great impact on receiver’s performance; in this thesis, a new solution for ku-band (12-18 ghz) mixer design in tsmc 0.18 µm is presented. this mixer has high linearity a...

Journal: :علوم گیاهان زراعی ایران 0
ابوالفضل فلاح هروی دانشجوی دکتری، دانشکدة کشاورزی، دانشگاه شاهرود حمید عباس دخت دانشیار، دانشکدة کشاورزی، دانشگاه شاهرود احمد زارع فیض آبادی استاد، مرکز تحقیقات کشاورزی و منابع طبیعی مشهد احمد غلامی دانشیار، دانشکدة کشاورزی، دانشگاه شاهرود

in order to study the effects of conventional and conservation tillage with management residue on wheat physiological properties, a field experiment was conducted in 2013-2014 at mashhad agricultural and natural resources research center of razavi khorasan province. this experiment was carried out as split plot design based on a randomized complete block design with three replications. main plo...

ژورنال: علوم آب و خاک 2010
افیونی, مجید, شیرانی, حسین , حاج عباسی, محمدعلی , همت, عباس,

Tillage systems and organic manures could affect soil physical and mechanical properties. This study was conducted to investigate the impacts of two tillage systems including conventional tillage by moldboard plowing (plowing depth, 30 cm) and reduced tillage by disk plow (plowing depth, 15 cm) and three rates (0, 30 and 60 ton ha-1) of farmyard manure (FYM) on the soil penetration resistance u...

F. Montemurro, M. Maiorana

Many sustainable agronomical practices can be adopted to contain environmental risks of crop production and, at the same time, sustain yield and quality. In this framework, the aim of this research was to study the effects of continuous cropping (CC) and crop rotation, tillage and fertilization strategies on durum wheat (Triticum durum Desf.) production. The responses of soil properties we...

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