نتایج جستجو برای: water and ew and dry matter

تعداد نتایج: 16973042  

Journal: :علوم گیاهان زراعی ایران 0
آیدین حمیدی رجب چوکان احمد اصغرزاده مجید دهقان شعار امیر قلاوند محمد جعفر ملکوتی

a study was conducted to evaluate the effects of plant growth promoting rhizobacteria (pgpr) inoculants including four strains of azotobacter chroococcum, azospirillum lipoferum, a. brasilense and pseudomonas fluorescence on dry matter accumulation of late maturing maize(zea mays l.) hybrids, sc704, sc700 and a promising single cross b73×k18. a factorial experiment was conducted in research fie...

A.R. Sepaskhah M.M. Maharlooei R. Jafari S. M. Nassiri

ABSTRACT Water management is an essential concept for water intensive crop such as maize dealing with water shortage under drought conditions. Maize production is ranked after wheat and barely in Fars province, Iran. Therefore, the present study was conducted to investigate the effects of planting methods by conventional and modified planters on maize growth and yield at different irrigation re...

Journal: :تولید گیاهان زراعی 0

production of halophyte plants with saline water and soil and feeding them to livestock is one of the most sustainable methods of conservation in desert ecosystem regions. kochia is a high salt resistant plant that can widely use as forage for livestock in arid ecosystems with lack of appropriate water and soil resources. in order to investigate potential of forage production of five different ...

Journal: :پژوهش های زراعی ایران 0
علی رضا سبحانی حسن حمیدی

in order to study the yield and growth indix of potato under water deficit, an experiment was conducted with line-source sprinkler irrigation in khorasan razavi agricultural and natural resource research center. water deficit levels were included, at 0.75m from line-source (control), at 3.75m from line source (very mild deficit), at 6.75m from line-source (mild deficit), at 9.75m from line-sour...

Ensiling alfalfa is difficult due to some restrictions such as low water soluble carbohydrate concentration and high buffering capacity. This study was conducted to document the effects of supplementation of alfalfa silage with fresh whey and bacterial additive on gas production, dry matter, organic matter and crude protein degradabilities by in vitro method. Experimental treatments included th...

Journal: :پژوهش های تولید گیاهی 0

the effects of an azotobacter chrococum isolate (strain ag11) and vermicompost and their combined effects on a rain-fed winter wheat (var. zagros) nutrient uptake and growth and soil water content were investigated with a farm trial.  the dry matter yield was determined in 5 occasions. gravimetric soil water content, soil microbial respiration and the number of azotobacter were determined at sa...

Journal: :تولیدات دامی 0
ایوب لکی دانشجوی دکتری گروه مهندسی علوم دام، دانشکده علوم و مهندسی کشاورزی، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران مهدی دهقان بنادکی دانشیار گروه مهندسی علوم دام، دانشکده علوم و مهندسی کشاورزی، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران ابوالفضل زالی دانشیار گروه مهندسی علوم دام، دانشکده علوم و مهندسی کشاورزی، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران مهدی گنج خانلو دانشیار گروه مهندسی علوم دام، دانشکده علوم و مهندسی کشاورزی، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران کامران رضایزدی دانشیار گروه مهندسی علوم دام، دانشکده علوم و مهندسی کشاورزی، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران

the aim of this study was to investigate the effect of feeding of  steeped barley grain with lactic acid (la) and citric acid (ca) on dry matter intake, feeding behavior, apparent nutrients digestibility, rumen ph and milk production. eight early lactating holstein cows in the second parities were used in 4×4 latin square change- over design. treatments  consisted of basis diet containing 1) dr...

فرجی, ابوالفضل,

In the area with terminal heat and drought stress such as Gonbad, allocation of produced dry matter to reproductive organs is of great importance. In order to evaluate the effect of different temperature and moisture regimes on dry matter distribution and harvest index ofcanola an experiment wasconducted at Agricultural Research Station of Gonbad during 2005-2007. The experiment was a RCBD arra...

Journal: :تحقیقات آب و خاک ایران 0
اسماء مقبلی مهنی دررودی دانشجوی کارشناسی ارشد آبیاری و زهکشی، گروه مهندسی آب، دانشکدة آب و خاک، دانشگاه زابل معصومه دلبری دانشیار گروه مهندسی آب، دانشکدة آب و خاک، دانشگاه زابل نادر کوهی عضو هیئت علمی، بخش فنی و مهندسی، مرکز تحقیقات کشاورزی و منابع طبیعی استان کرمان

throughout the present study some vegetative and reproductive characteristics of rosa damascene fewer than three different irrigation regimes (100, 70 and 40% of potential evapotranspiration) through an application of surface vs subsurface drip irrigation systems were investigated. some morphological characteristics investigated, included the number of branches per plant, shading diameter, plan...

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