نتایج جستجو برای: three drip irrigation levels 50

تعداد نتایج: 2440869  

2008
K. C. Stone P. J. Bauer W. J. Busscher J. A. Millen

In the southeastern U.S. Coastal Plains, supplemental irrigation is required to reduce the impact of short‐term droughts and yield‐reducing plant water stress that can occur at least biennially. Sprinkler irrigation is commonly used to water agronomic crops in the region. Microirrigation is typically used for high value fruit and vegetable crops. In recent years and at some locations, microirri...

2008
Payam Najafi Sayyed Hassan Tabatabaei

In order to assessment of SDI system application in the condition of wastewater reuse, three treatments with three replications were design. These treatments included check treatment with drinking water (CH), surface drip irrigation with wastewater (DI) and subsurface drip irrigation with wastewater (SDI). In addition, before pipeline, a SDI filtration designed to improve biological index of wa...

Journal: :International Journal of Plant and Soil Science 2023

An experiment was conducted at research field of Deendayal Upadhyay Centre Excellence for Organic Farming, CCS HAU, Hisar during the year 2021-22 to study effect different irrigation levels and mulching methods on performance organically cultivated drip irrigated papaya. The comprised nine treatments three viz. 50%, 75% 100% crop water requirement methods. results showed that plant height (238 ...

Journal: :آب و خاک 0
امیر اعظمی کیومرث زرافشانی حسین دهقانی سانیچ علی گرجی

abstract the main purpose of this study was to determine farmers’ satisfaction towards pressurized irrigation systems in kermanshah province. this study used a mixed method design with descriptive correlation emphasis. a researcher made questionnaire was used to collect data. a random sample of 274 farmers who have been equipped with pressurized irrigation systems during the last three years pa...

2013
A. Díaz-Espejo

Soil surface resistance increase quickly during the first three days after irrigation or rain event. By explicitly incorporating surface resistance in simple equations, daily total evaporation estimation of a drip-irrigated olive grove was significantly improved. This increase in soil surface resistance could explain why observed cumulative soil evaporation is higher in locations with lower irr...

S.F. Jiang S.H. Liu S.Q. Wan T.B. Zhang Y.H. Kang,

The effects of drip irrigation and different cultivation methods on seedgermination and growth of Puccinellia tenuiflora in saline-sodic soils wereinvestigated in field experiments during 2008-2010 in the Songnen Plain, China.Drip irrigation was applied to waste saline-sodic P. tenuiflora grasslands for bothflat and ridge cultivation methods. Drip irrigation affected the distributions ofelectri...

Journal: :تولید گیاهان زراعی 0
محمدجواد فریدونی دانشگاه یاسوج هوشنگ فرجی هئیت علمی دانشگاه یاسوج محمد صدقی اصل هئیت علمی دانشگاه یاسوج

in the country, reducing water resources and increasing water losses in the various methods of surface irrigation, has increased attention, super drip irrigation method, especially drip tape irrigation. one of the techniques are used in cultivation of early sweet corn, the use of plastic mulch. using this technique, the reserve temperature conditions for plant growth and early maturity, resulti...

ژورنال: علوم آب و خاک 2017

Drip irrigation is one of the new irrigation methods for optimum use of water resources and increase of irrigation efficiency. The emitters' clogging is the most important problem in these systems. The physical clogging is the most important factor in reducing the discharge and emission uniformity of emitters. The emitter position on the laterals and emitter spacing are the factors that affect ...

2013
Gilbert Miller Jeffrey W. Adelberg Hamid J. Farahani

Delineating the depth and extent of the watermelon [Citrullus lanatus (Thumb.) Matsum. & Nak.] root zone assists with proper irrigation management and minimizes nutrient leaching. The objective of this 3-year field study was to measure root distribution and root length density of watermelon (cv. Wrigley) grafted on two different rootstocks (Lagenaria siceraria cv. ‘FR Strong’ and Cucurbita mosc...

Journal: :تحقیقات مهندسی کشاورزی 0
جواد باغانی عضو هیئت علمی مرکز تحقیقات کشاورزی خراسان رضوی مسعود قدسی عضو هیئت علمی مرکز تحقیقات کشاورزی خراسان رضوی

in order to study of drought tolerance levels in some wheat lines and cultivars based on uniform regional wheat yield trial (urwyt-m-75) an experiment was carried out using a strip plot design based on complete block design with 3 replications for two years (1998-2000) in torogh agricultural research station (mashhad, iran). the main plots (horizontal factor) were 3 levels of irrigation: 10, 20...

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