effects of combined application of nitrogen and phosphorus on their, and as well on potassium uptake by rice plant under flooded vs. non-flooded conditions
نویسندگان
چکیده
rice (oryza sativa l.) is one of the iran's most strategic crops with water shortage as the most important abiotic stress limiting its yield. in the present research the effects of: variety, water regime, nitrogen (n) and phosphorus (p) levels on n, p and k uptake were studied under greenhouse conditions. the experiment design was a factorial one based upon a randomized complete blocks of three replications. the factors included two varieties of rice (hashemi and ali kazemi), two water regimes (flooded vs. periodic saturation), three nitrogen levels as urea (0, 75, 150 mg kg-1) and three p levels as mono calcium phosphate (0, 25, 50 mg kg-1). after 90 days past of growth period, plants were harvested, and total content as well as concentration of n, p, and k in shoot and root determined. the results revealed that k concentrations in shoot and root, k content in shoot and n translocation factor in ali kazemi were greater than those in hashemi variety. but p concentration in root, p translocation factor and p content of the root (in hashemi) became higher that those in ali kazemi variety. p concentration in shoot and root, shoot k concentration, n content of shoot, p and k contents of the shoot and root (under flooded conditions) were significantly (p
منابع مشابه
Interactive Effects of Cadmium and Zinc Application on Their Uptake by Rice Under Waterlogged and Non-waterlogged Conditions
In order to investigate the effect of Cd and Zn on uptake, concentration and the translocation factor of the Cd and Zn in the rice plant, a factorial experiment was conducted with four factors including two rice cultivars of Vandana and Hashemi, two waterlogged and non-waterlogged conditions and three levels of Zn and Cd (0, 5 and 10 mg kg-1 soil). The experiment was carried out in a randomized...
متن کاملleadership styles of tefl instructors at gilan university and their effects on the students attitudes and motivation
the subjects of the study are only the tefl teachers and students at gilan university. to obtain the desired data, a questionnaire which was based on the theories and disecussions gathered, was used as the main data gathering instrument. to determine the degree of relationship between variables, covariance and pearson product moment correlation coefficient were the formulas applied. the data we...
15 صفحه اولeffect of postharvest application of chitosan and calcium chloride on decay and quality attributes of sweet cherry
چکیده ندارد.
15 صفحه اولinteractive effects of cadmium and zinc application on their uptake by rice under waterlogged and non-waterlogged conditions
in order to investigate the effect of cd and zn on uptake, concentration and the translocation factor of the cd and zn in the rice plant, a factorial experiment was conducted with four factors including two rice cultivars of vandana and hashemi, two waterlogged and non-waterlogged conditions and three levels of zn and cd (0, 5 and 10 mg kg-1 soil). the experiment was carried out in a randomized...
متن کاملthe effects of planning on accuracy and complexity of iranian efl students’ written narrative task performance
this study compared the different effects of form-focused guided planning vs. meaning-focused guided planning on iranian pre-intermediate students’ task performance. the study lasted for three weeks and concentrated on eight english structures. forty five pre-intermediate iranian students were randomly assigned to three groups of guided planning focus-on-form group (gpfg), guided planning focus...
15 صفحه اولمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
تحقیقات آب و خاک ایرانجلد ۴۴، شماره ۲، صفحات ۱۸۳-۱۹۲
کلمات کلیدی
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023