نتایج جستجو برای: while under deficit irrigation

تعداد نتایج: 2066132  

Journal: :به زراعی کشاورزی 0
معصومه نعیمی استادیار، گروه تولیدات گیاهی، دانشکدۀ کشاورزی و منابع طبیعی، دانشگاه گنبد کاووس، ایران غلام علی اکبری دانشیار، گروه علوم زراعی و اصلاح نباتات، پردیس ابوریحان، دانشگاه تهران، ایران امیرحسین شیرانی راد استاد پژوهش، بخش دانه های روغنی، مؤسسۀ تحقیقات اصلاح و تهیۀ نهال و بذر، کرج، ایران طاهره حسنلو استادیار پژوهش، بخش فیزیولوژی، پژوهشکدۀ بیوتکنولوژی کشاورزی، کرج، ایران غلام عباس اکبری دانشیار، گروه علوم زراعی و اصلاح نباتات، پردیس ابوریحان، دانشگاه تهران، ایران مهدیه امیری نژاد استادیار، گروه علوم گیاهی، دانشکدۀ کشاورزی، دانشگاه جیرفت، ایران

in order to evaluate the effect of zeolite application and selenium spraying on some physiological traits and grain yield in medicinal pumpkin (cucurbita pepo l.) under different moisture regimes, a study was conducted in a factorial experiment based on randomized complete block design with three replications during 2010 in takestan at gazvin province, iran. the three levels of irrigation facto...

2013
José L. Chávez Jon Altenhofen Kendall DeJonge

Over the past few decades, the competition for freshwater resources has substantially increased in arid/semi-arid areas, exacerbating the pressure on the largest user of water, namely agriculture, to consume less water. However, reducing crop consumptive water use or evapotranspiration through water stress can have a negative impact on production economics if not precisely managed. Remote sensi...

Journal: :Annals of botany 2010
M M Chaves O Zarrouk R Francisco J M Costa T Santos A P Regalado M L Rodrigues C M Lopes

BACKGROUND A large proportion of vineyards are located in regions with seasonal drought (e.g. Mediterranean-type climates) where soil and atmospheric water deficits, together with high temperatures, exert large constraints on yield and quality. The increasing demand for vineyard irrigation requires an improvement in the efficiency of water use. Deficit irrigation has emerged as a potential stra...

A.R. Sepaskhah, S.H. Ahmadi

Available fresh water resources are subjected to an ever-increasing pressure due to extensive agricultural water demand for irrigated lands. A long-term perspective in shortage of fresh water resources, especially in arid and semi-arid area, highlights an urgent solution for innovative irrigation strategy and agricultural water management. This paper is a review on the wide applications of the ...

Journal: :تحقیقات مهندسی کشاورزی 0
محمد جلینی استادیار پژوهش بخش تحقیقات فنی و مهندسی کشاورزی، مرکز تحقیقات کشاورزی و منابع طبیعی خراسان رضوی

this research was conducted at torogh agricultural research station in khorasan-e razavi province to determine the impact of irrigation cutoff at different growth stages and percentage of water use on the yield and water use efficiency (wue) of wheat cultivars using sprinkler irrigation. the study was done from 2006-2008. the experimental design was a randomized complete block design with a str...

Journal: :پژوهش های تولید گیاهی 0

the objective of deficit irrigation is to increase water use efficiency by reducing of water quantity or wave off further irrigations that have not necessary. cotton plant is sensitive to irrigation timing and quantity through different growth stages. the field trail was conducted at hashemabad cotton research station (gorgan) to determine water consumption and cotton sensitivity to deficit irr...

A.R. Sepaskhah M.M. Maharlooei R. Jafari S. M. Nassiri

ABSTRACT Water management is an essential concept for water intensive crop such as maize dealing with water shortage under drought conditions. Maize production is ranked after wheat and barely in Fars province, Iran. Therefore, the present study was conducted to investigate the effects of planting methods by conventional and modified planters on maize growth and yield at different irrigation re...

Journal: Desert 2016
Gh.R. Afsharmanesh H. Heidari Sharafabad H. Sarhadi J. Daneshian S.A. Valadabadi

     For investigation deficit irrigation and nitrogen application effect on nutrients uptake of henna ecotypes, this research was conducted in the form of split-split-plot on the basis of randomized complete block design with four replications in the Research Field of Islamic Azad University, Jiroft, Iran in 2013-2014. The main, sub and sub-sub plot were deficit irrigation (100, 75 and 50% of ...

Journal: :Food chemistry 2016
Vanessa Cardeñosa Amadeo Girones-Vilaplana José Luis Muriel Diego A Moreno José M Moreno-Rojas

Demand for and availability of blueberries has increased substantially over recent years, driven in part by their health-promoting properties. Three blueberry varieties ('Rocío', V2, and V3) were grown under two cultivation systems (open-field and plastic tunnels) and subjected to two irrigations regimes (100% and 80% of crop evapotranspiration) in two consecutive years (2011-2012). They were e...

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