نتایج جستجو برای: i4 twice irrigation flowering and boll stage and i5 three time irrigation flowering stage

تعداد نتایج: 17133372  

Adverse environmental conditions cause stress in plants, and some plant growth regulators (PGR’s) improve plant tolerance to these undesirable conditions. In order to study the effect of gibberellin, cytokinin and cycocle on some physiological traits of two wheat cultivars under different irrigation regimes, a study was conducted as a split-split plot experiment based on a randomized complete b...

Journal: :علوم گیاهان زراعی ایران 0
محمد میرزایی حیدری میرزا حسین نوری علی خورگامی پیام پزشک پور احمد ارزانی

to investigate the effect of plant density and supplemental irrigation on agronomic characteristics, chlorophyll content and light interception beneath the canopy of three chickpea genotypes under dryland conditions, an experiment was conducted at research station of lorestan agricultural research center located at chegini, khoramabad, during 2004-2005. the study was conducted using a split-spl...

Amir Hassan Omidi Arash Roozbahani Mahdi Aghaalikhani,

In order to study the effect of bio-fertilizers  in decrease the effects of water stress on yield, yield components and oil percentage of Goldasht spring safflower cultivars (Carthamus tinctorius L.), an experiment on split plot in a randomized complete block design with three replications was carried out  in 2012 at the Agricultural Research Station of Islamic Azad University of Roude...

Amir Hassan Omidi Arash Roozbahani Mahdi Aghaalikhani,

In order to study the effect of bio-fertilizers  in decrease the effects of water stress on yield, yield components and oil percentage of Goldasht spring safflower cultivars (Carthamus tinctorius L.), an experiment on split plot in a randomized complete block design with three replications was carried out  in 2012 at the Agricultural Research Station of Islamic Azad University of Roude...

Journal: :پژوهش های زراعی ایران 0
شهرام رضوان بیدختی سارا سنجانی علیرضا دشتبان ایمان حسام عارفی

research on crop response to deficit irrigation is important to reduce agriculture water use in areas where water is limited resource. using drought resistant landraces with irrigation scheduling based on phenological stages in semi-arid and arid regions may provide an opportunity to optimize irrigation efficiency and water savings in these regions. in order to evaluate of yield and yield compo...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند - دانشکده کشاورزی 1390

abstract this study is carried out to determine the chemical composition in the three vegetative stages of the haloxylon sp., degradation parameters, with adding naoh and ca(oh2 ). for this purpose, in may and october and january 2010 enough some haloxylon sp. of the ammary area was prepared. crude protein and ash percentage are decrease, neutral detergent fiber percentage with pragress stage ...

Journal: :بوم شناسی کشاورزی 0
سارا باختری غلامرضا خواجویی نژاد قاسم محمدی نژاد

introduction cumin (cuminum cyminum l.) is an annual plant that commonly cultivated in arid and semiarid regions of iran. the crop has a wide range of uses including medicinal, cosmetic and food industry. cumin occupies about 26% of total area devoted to medicinal plants in iran. however, cumin is seriously affected by the fusarium wilt and blight diseases. the diseases usually increase under w...

Journal: :تحقیقات آب و خاک ایران 0
مهرداد نوروزی عضو هیات علمی مرکز تحقیقات کشاورزی و منابع طبیعی استان بوشهر مختار زلفی باوریانی عضو هیات علمی مرکز تحقیقات کشاورزی و منابع طبیعی استان بوشهر

proper irrigation scheduling, i.e. timely and adequate irrigation is an important prerequisite to profitable crop production. high temperatures along with soil moisture deficits are some of the main limiting factors for canola (b. napus l.) production in dry land cropping systems. these factors negatively affect the formation of pods during the flowering stage, resulting in decrease in seed yie...

2013
Yanqi Sun Hao Feng Fulai Liu

This study investigated the comparative effects of reduced irrigation regimes--partial root-zone drying (PRD) and conventional deficit irrigation (DI)--on the incidence of blossom-end rot (BER) in tomato (Solanum lycopersicum L.) under three Ca-fertilization rates: 0, 100, and 200mg Ca kg(-1) soil (denoted Ca0, Ca1, and Ca2, respectively). The plants were grown in split-root pots in a climate-c...

ژورنال: علوم آب و خاک 2009
امامی, یحیی, سپاسخواه, علیرضا, شعبانی, علی , هنر, تورج, کامگار حقیقی, علی اکبر,

Oil seed rape (Brasica napus) is an important crop, which is cultivated in Iran for oil production. As a management practice deficit irrigation strategy is applied to cope with water shortages, especially during drought periods. This research was conducted to study the effect of water stress on physiological parameter of oil seed rape in the experimental research field of Collage of Agriculture...

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