نتایج جستجو برای: but no effect on shoot phosphorus

تعداد نتایج: 10616299  

Journal: :پژوهش های زراعی ایران 0
سعید خانی نژاد محمد کافی حمیدرضا خزاعی جواد شباهنگ جعفر نباتی

kochia scoparia is a salt resistant plant that can be used in producing forage in the areas with salt water and soil resources. one of the problems which produce the forage plants in these areas decreases the function and quality of the forage in irrigation condition with salt water. therefore, using the chemical fertilizers can be considered as a useful solution. this study was conducted to ev...

Journal: :علوم باغبانی ایران 0
فروزان صالحی پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کارشناسی ارشد محسن کافی پردیس کشاورزی و منابع طبیعی دانشگاه تهران، دانشیار مصباح بابالار پردیس کشاورزی و منابع طبیعی دانشگاه تهران، استاد احمد احمدی پردیس کشاورزی و منابع طبیعی دانشگاه تهران، مربی

phosphorus induces flowering and helps seed formation, but there is a big gap between phosphorus supply from natural sources and agriculture and industry demand. in order to investigate phosphorus feeding over long time from iran regions' apatites on rose plants characteristics, var. black magic in zeoponic culture, an experiment was conducted as factorial on the basis of completely random...

Journal: :تحقیقات آب و خاک ایران 0
نصرت اله نجفی منصور پارسازاده سیدجلال طباطبائی شاهین اوستان

to study the effect of nitrogen form and ph of nutrient solution on the uptake and concentration of fe, zn, cu and mn in roots and shoots of spinach plant, a factorial experiment was conducted with two factors including nutrient solution ph in three levels (4.5, 6.5 and 8.0) and nitrate to ammonium ratio of nutrient solution in five levels (100:0, 75:25, 50:50, 25:75 and 0:100). the experiment ...

2004
Donglin Zhang Renae E. Moran

Scaevola aemula R.Br. (fanfl ower), an ornamental plant native to Australia, produces stunted growth when fertilized with high concentrations of P. To determine optimum P concentration, rooted cuttings were transplanted into 15 cm standard pots and grown with a water soluble fertilizer, where P concentrations were 0, 14.5, 29.0, 43.5, 58.0, 72.5, 87.0 mg·L–1 and all plants received 200 mg·L–1 N...

Journal: :علوم گیاهان زراعی ایران 0
مهدی عبادی دانشجوی سابق کارشناسی ارشد، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج ناصر مجنون حسینی استاد، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج محمد رضا چائیچی استاد، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج

to study the effects of mycorrhiza fungi and humic substances on yield and yield components of corn (zea mays l. var. s.c. 704) under limited irrigation condition, an experiment was conducted in split plot arrangement based on rcbd in four replications at the research farm of university of tehran (karaj-iran) in 2011. the main factor consisted of three irrigation levels i.e. normal (irrigation ...

Journal: :Journal of Plant Nutrition 2022

Phosphate (PO43-, Pi) is the sole phosphorus (P) containing compound utilized for plant growth, leading to widespread use of Pi fertilizers. An alternative form P, phosphite (PO33-, Phi) has increasingly been used in many crop systems, including amenity turfgrass, not only as a nutrient source but also pesticide and biostimulant. There are, however, conflicting reports efficacy benefits Phi P. ...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد گرمسار - دانشکده علوم انسانی 1391

the present study was conducted to investigate the effect of implicit focus on form through input flooding and the effect of noticing, explicit focus on form on linguistic accuracy. to fulfill the purpose of the study, 86 iranian pre-intermediate efl learners of one of the language institutes were chosen by means of administering ket as the homogeneity test. these learners were pretested throug...

2005
N. A. Tejera R. Campos J. Sanjuan C. Lluch

The effect of sodium chloride (NaCl)-salinity on growth responses and tissues organic solutes and mineral content was investigated in common bean plants inoculated with salttolerant Rhizobium tropici wild-type strain CIAT899 and four mutant derivatives having decreased salt-tolerance (DST). Under non-saline conditions two mutants formed partially effective (HB10, HB12) and another two almost in...

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

one of the most commonly used techniques to reduce the corrosion rate of rebar in concrete is addition substances named corrosion inhibitors into the concrete. corrosion inhibitor is chemical compounds that were added to concrete to prevent corrosion of steel in concrete. sodium nitrate is a type of anodic inhibitors that this study investigatesthe effect of this inhibitor on the properties of ...

Journal: :پژوهش های حبوبات ایران 0
سعیده عالیپور محمدرضا مرادی تلاوت سید عطااله سیادت سید هاشم موسوی عزیز کرملا چعب

introduction bean (vicia faba l.) has the great old history of crop cultivation to date would be pushed back to a fairly long day plant, resistant to frost and cool season crop and up to 5 degrees celsius tolerated. bean prefers wet and cold conditions. excessive heat may cause fetal growth problems, loss and reduce the number of seeds per pod bean flowers to the growth of plant and fruit set o...

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