نتایج جستجو برای: three levels of single irrigation rainfed

تعداد نتایج: 21308494  

جانب‌اله نیازی اردکانی, , سید حمید احمدی, ,

In this paper, the effect of irrigation water salinity levels on seed germination, dry matter weight of seedlings at eight-leave stage, and the salt tolerance of 8 rapeseed cultivars was investigated. Relative yield reduction in saline and non saline conditions, salt sensitivity index and Van Genuchten-Hoffman methods were used to determine the salt tolerance of the cultivars. Results showed th...

Journal: :آب و خاک 0
سیدحسین صدرقاین مهدی اکبری هادی افشار محمدمهدی نخجوانی مقدم

abstract this study was conducted to determine the impacts of different drip irrigation method and amount of water on yield and water use efficiency of tomato in varamin agricultural research center, iran. the study was done during two years. experimental design was randomized complete blocks design (rcbd) in split plot with three replications. three different drip irrigation method; surface dr...

ژورنال: علوم آب و خاک 2007
جانب‌اله نیازی اردکانی, , سید حمید احمدی, ,

In this paper, the effect of irrigation water salinity levels on seed germination, dry matter weight of seedlings at eight-leave stage, and the salt tolerance of 8 rapeseed cultivars was investigated. Relative yield reduction in saline and non saline conditions, salt sensitivity index and Van Genuchten-Hoffman methods were used to determine the salt tolerance of the cultivars. Results showed th...

2009
S. K. Yau

Effects of seed rates on grain, straw and oil yield of safflower (Carthamus tinctorius L.) were studied for two years in the semi-arid central Bekaa Valley of Lebanon. Three trials, two under rainfed and one under supplementary irrigations, were conducted using seed rates of 6, 12, 24 and 48 kg ha -1 corresponding to intra-row spacing of 20, 10, 5, and 2.5 cm, respectively. There was significan...

Journal: :Agricultural Water Management 2022

Ideotypic characteristics of durum wheat associated with higher yield under different water and temperature regimes were studied Mediterranean conditions. Six semi-dwarf cultivars contrasting agronomic performance grown during two consecutive years winter-planted rainfed support-irrigation conditions a late-planting trial support irrigation, at the INIA station Colmenar de Oreja (Madrid). Diffe...

Journal: Journal of Herbal Drugs 2014
Farahnaz Khalighi-Sigaroodi Pezhman Moradi Sara Yari,

Background & Aim: Aloe vera is used in the food and pharmaceutical as an aid to effective treatment. The purpose of this study is to improve growth, increase production of valuable metabolites and increase the sugars in Aloe vera gel with low cost and high efficiency under water stress conditions. Experimental: In this study, Aloe vera potted in greenhouse conditions...

Journal: :Agronomy 2022

Interspecific interactions and recovery growth play an important role in crop growth, development ultimately yield intercropping systems. However, the impact of different water nitrogen levels on production, interspecific between intercrops, late-maturing crops is still unclear. A two-year field experiment was conducted Yangling, Shaanxi province, to investigate dynamics interactions, effects y...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده ادبیات و علوم انسانی 1390

this study explored reading strategy use of tefl ma students when they read academic research articles in english. the purpose of this study was to investigate how this group of readers typically approaches reading academic research articles related to their field of study, and also what they do in reading such research articles. the aim of the present study was bilateral. first, the researcher...

Journal: :مدیریت خاک و تولید پایدار 0
ملیحه آق ارکاکلی فارغ التحصیل کارشناسی ارشد دانشگاه علوم کشاورزی و منابع طبیعی گرگان رامتین جولایی عضو هیات علمی دانشگاه علوم کشاورزی و منابع طبیعی گرگان علی کرامت زاده عضو هیات علمی گروه اقتصاد کشاورزی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان فرهاد شیرانی بیدآبادی عضو هیات علمی گروه اقتصاد کشاورزی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان

abstract:background and objectivesenvironmental is one of the most important components of global macro policies, therefore, one of the main prerequisite of many activities in macro level is compatibility with environment. environmental pollution is one of the most significant challenges that is faced by human society in 21st century. agriculture sector compare to the other other sectors of eco...

Ali Asghari Ali Rasoulzadeh Hamidreza Mohamaddoust Chamanabad Masoumeh Nemati Omid Sofalian

Abstract To study the effect of water stress in rapeseed cultivars at the seedling stage, 10 rapeseed cultivars were evaluated at three irrigation levels [normal irrigation (control) and irrigation after depletion of 60 and 85% of available soil water]. Analysis of variance showed considerable variation among cultivars. Water stress reduced all of the studied morphological characteristics, espe...

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