نتایج جستجو برای: water requirement of plant

تعداد نتایج: 21250712  

Journal: :international journal of advanced biological and biomedical research 2013
atefeh afshar ali neshat

the agricultural regions are running into difficulties, which are restrictive availability of water, successive appearing draughts, and overuse of ground water resources for supplemental water requirements. as a sample which is got from the farm is sent to the laboratory for testing and the laboratory works need devices. hence, conducting farm experiments are expensive and time consuming to opt...

Ali Neshat Atefeh Afshar,

The agricultural regions are running into difficulties, which are restrictive availability of water, successive appearing draughts, and overuse of ground water resources for supplemental water requirements. As a sample which is got from the farm is sent to the laboratory for testing and the laboratory works need devices. Hence, conducting farm experiments are expensive and time consuming to opt...

E. Pourkhiz F. Ghasemi Sahebi M. Hekmat

Using modern irrigation methods such as border irrigation is one way for an optimum usage of water. Potato, for this study, was cultured in a farm located at Kermanshah faculty of agriculture to evaluate the efficiency of border irrigation. The culture potato was the Agria variety and the applied treatment were 50, 75, and 100 percent of potato plant`s water requirement. Tapes were 12 m and the...

ژورنال: علوم آب و خاک 2018

With the increase of population, the optimal use of water resources is necessary. This study was carried out to evaluate the impact of different levels of irrigation on the yield, yield components and water productivity of corn using single and double row drip irrigation systems (Tubes type). . The experiment was conducted in a split plot design based on the randomized complete block design (RC...

Mehrdad Esfandiari Navid adibifard S.R. Hassanpour Avanji Zohreh Baniabbass,

Today climate change is one of the most important human concerns This fact affected human life in different ways .  one of the most important impacts of climate change is on crops yield so that change in temperature  regime  particularly maximum and minimum  temperatures  is noticeably change plants production . in this research , is considered to  impact of climate change on water requirement ...

Journal: :international journal of agricultural science, research and technology in extension and education systems 2011
f. ghasemi sahebi m. hekmat e. pourkhiz

using modern irrigation methods such as border irrigation is one way for an optimum usage of water. potato, for this study, was cultured in a farm located at kermanshah faculty of agriculture to evaluate the efficiency of border irrigation. the culture potato was the agria variety and the applied treatment were 50, 75, and 100 percent of potato plant`s water requirement. tapes were 12 m and the...

Journal: :علوم باغبانی ایران 0
مجتبی دلشاد پردیس کشاورزی و منابع طبیعی دانشگاه تهران، استادیار مستانه احرار پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کارشناسی ارشد مصباح بابالار پردیس کشاورزی و منابع طبیعی دانشگاه تهران، استاد

water and nutrient absorption by plants is one of the most conspicuous factors which seriously affect plant productivity. improving physical properties of soilless media and their water retaining capacity can improve plant's nutrient absorption, growth and subsequent yield. in this study, we tried to improve plant nutrient absorption through incorporation of hydrogel into growth media and ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور استان مازندران - دانشکده ریاضی 1390

abstract this thesis includes five chapter : the first chapter assign to establish fuzzy mathematics requirement and introduction of liner programming in thesis. the second chapter we introduce a multilevel linear programming problems. the third chapter we proposed interactive fuzzy programming which consists of two phases , the study termination conditions of algorithm we show a satisfac...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه یزد - دانشکده جغرافیا 1392

the west of esfahan province, iran, is one of the most important agricultural areas throughout the country due to the climate variability and life-giving water of zayanderood river. rice is one of the major and economic crops in this area. the most important climatic elements in agricultural activities which should be considered include temperature, relative humidity, precipitation and wind. so...

Journal: :تحقیقات جغرافیایی 0
امیر گندمکار دانشگاه نجف آباد ویکتوریا عزتیان هواشناسی اصفهان محمدباقر بهیار پژوهشکده هواشناسی تهران حسنعلی غیور دانشگاه آزاد اسلامی واحد نجف آباد زهره رجبی دانشگاه آزاد اسلامی واحد نجف آباد

water productivity increase is one of the water management solutions in agriculture and increasing its efficiency. the accurate determination of plants water requirement and the accurate value estimate of evapotranspiration is essential for improving water productivity in irrigation network that it can help to improve water management in agriculture. in this research such climatic elements as t...

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