نتایج جستجو برای: irrigation efficiency

تعداد نتایج: 427249  

Journal: :Journal of Irrigation and Drainage Engineering 1999

2018
Xuexin Xu Yinghua Zhang Jinpeng Li Meng Zhang Xiaonan Zhou Shunli Zhou Zhimin Wang

Improving winter wheat grain yield and water use efficiency (WUE) with minimum irrigation is very important for ensuring agricultural and ecological sustainability in the Northern China Plain (NCP). A three-year field experiment was conducted to determine how single irrigation can improve grain yield and WUE by manipulating the "sink-source" relationships. To achieve this, no-irrigation after s...

2017
Lily R. Mundy Mark J. Gage Richard S. Yoon Frank A. Liporace

BACKGROUND The need for reoperation or wound infection treatments between pulsatile and gravity irrigation are statistically equivalent, however, it is unclear which method maximizes operative efficiency and expeditious irrigation. In this study we set out to determine the differences in irrigation rate between these various treatment methods. METHODS This was an ex-vivo experimental laborato...

Journal: :آب و خاک 0
رمضانی اعتدالی رمضانی اعتدالی نظری نظری توکلی توکلی پارسی نژاد پارسی نژاد

abstract: deficit irrigation technique can be used for produce more yield for every unit of irrigation water, and cause to increase crop economical benefit. main purpose of deficit irrigation is high water use efficiency with decreasing in irrigation sufficiency. in this research potential of cropwat model in deficit irrigation management for two crops, wheat and barley in karaj climate was stu...

زاهدی, مرتضی, قیصری, مهدی, مقامی, راضیه,

An experiment was conducted to evaluate the effects of different levels of nitrogen and irrigation on yield and yield components of safflower. Three nitrogen rates (0, 50 and 100 kg ha-1) under three irrigation levels (100% as control 80% as mild limited irrigation, and 60% of crop water requirement as severe limited irrigation) were investigated using a factorial laid out in a randomized comp...

A Assareh M Kalhor Y Yousefi fard,

Water deficit is one of the most important difficulties, in which happes in dry zone and half dry zones.Water deficit, as the determinative factor, determinates the growing and extension of the plant cover inthese areas. Using the supper attractive, may reduce the production in the crops and control the plantcover in face of dry stress and water deficit. In this paper, the effect of supper attr...

Journal: :تولید گیاهان زراعی 0

concerning limitation of water resources, determination of the least water that can lead to the maximum yield is of great importance in crop production. in order to evaluate effects of deficit irrigation on grain yield and water use efficiency of some wheat )triticum aestivum) cultivars under different climatic conditions, two similar field experiments were conducted in 2004 in agricultural res...

Journal: :مجله علوم کشاورزی ایران 0
علی شینی دشتگل سیروس جعفری نظام الدین بنی عباسی

sugarcane is cultivated in extensive areas in khuzestan it is irrigated through hydro-flume and in furrows. for an evaluation of the effect of deficit- irrigation on sugarcane yield, this experiment was conducted. the treatments consisted of the conventional irrigation method (blank), variable, every other irrigation, (by alternative furrows) and invariable every other irrigation (by fixing the...

2008
Michael D. Dukes Lincoln Zotarelli Johannes M. S. Scholberg Rafael Muñoz-Carpena

Plastic mulch and drip irrigation are commonly used in high intensity vegetable production regions such as Florida. Drip irrigation can be much more efficient than sprinkler irrigation since only the root zone of the cropped area is irrigated. However, improper irrigation management can lead to wasted water and leaching of soluble chemicals such as nitrate. In this project, several irrigation t...

Journal: : 2021

The article provides an analytical review of the achieved crop yields under irrigation in experimental and production conditions. For today, best experience use irrigated land indicates that, subject to all agrotechnical requirements, yield early grain crops reaches 8-10 t / ha, corn - 10-14 oilseeds 4-6 vegetable over 60 which is about 90% their productivity experiments scientific institutions...

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