Results 151 to 160 of about 295 (203)
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Design Nomographs for Trickle Irrigation Systems
Journal of Irrigation and Drainage Engineering - ASCE, 1984Nomographs relating discharge rate, plant uptake and soil water potential at a reference point are developed for trickle irrigation systems. The hydraulic conductivity K is assumed to be related to pressure head h by K\do EXP (αh) in which K\do and α are empirical constants representative of the specific soil.
Warrick A W
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Soil Science Society of America Journal, 2010
We previously developed a new, coupled‐source–sink modeling approach for evaluating an upper bound to the relative water uptake rate (water use efficiency) for two‐ and three‐dimensional geometries. Because the formulated water‐flow problem is linear, the relative water uptake rate for any given collection of point (or line) sources and point (or line)
Gregory Communar, Shmulik P. Friedman
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We previously developed a new, coupled‐source–sink modeling approach for evaluating an upper bound to the relative water uptake rate (water use efficiency) for two‐ and three‐dimensional geometries. Because the formulated water‐flow problem is linear, the relative water uptake rate for any given collection of point (or line) sources and point (or line)
Gregory Communar, Shmulik P. Friedman
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Trickle irrigation water quality and preventive maintenance
Agricultural Water Management, 1979The most serious problem in trickle irrigation is clogging of emitters or applicators. Recommendations and guidelines are presented for preventive maintenance which include water filtration, chemical treatment, pipeline flushing and field inspection. A suitable type, size and capacity of a filtration unit is required.
BUCKS, DA, NAKAYAMA, FS, GILBERT, RG
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Yield response of bananas to trickle irrigation
Australian Journal of Experimental Agriculture, 1981Supplementary trickle irrigation applied twice a week by single microtube at replacement rates of 0 (control), 20, 40, 60, 80, 100 and 120% of Class A pan evaporation (El from 1970 to 1976 increased bunch weight significantly (P= 0.02) above 40% E. Treatment 60% E gave a bunch weight of 27.6 kg compared with 25.7 for the control. The control, 20 and 40%
T Trochoulias, RD Murison
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Trickle irrigation of sunflower with municipal wastewater
Agricultural Water Management, 1991Abstract A field experiment was carried out for three years on a Calcaric Lithosol to study the influence of treated municipal wastewater in comparison with freshwater, supplemented with four N or P levels, on soil fertility and on growth and yield of trickle-irrigated sunflower ( Helianthus annuus L.).
I. Papadopoulos, Y. Stylianou
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Stormwater and Reclaimed Effluent in Trickle Irrigation
Journal of the Irrigation and Drainage Division, 1980Trickle irrigation experiments with two qualities of mixtures of reservoir effluents and stormwater, were conducted in a 1-yr research project at two kibbutzim (communal farms) in the Jezreel Israel. Various Israel methods and degrees of filtration were examined and then related to the effluent quality, as well as the degree of emitter clogging along ...
Gideon Oron +2 more
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Development of a trickle irrigation scheduling model
Computers and Electronics in Agriculture, 1990Abstract A trickle irrigation scheduling model was developed based on a water balance approach to water flow, with each increasing soil depth represented by an increasing size ellipsoid. During an irrigation the wetting front and volume of water to fill each ellipsoid is determined. The water is distributed into cubes that form each ellipsoid and the
T.W. Sammis, S. Williams, I.P. Wu
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Nitrogen fertigation of trickle-irrigated potato
Fertilizer Research, 1988This three-year field study, on Pellic Vertisol, was designed to investigate the response of trickle-irrigated potato (Solanum tuberosum L.) to four nitrogen levels continually applied with the irrigation stream. Waters containing 70, 130, 190, and 250 mg Nl−1 and uniformly supplied with 50 and 120 mgl−1 of P and K, respectively, were applied when the ...
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Trends in trickle irrigation systems development
International Journal of Water Resources Development, 1991As water availability becomes an increasing constraint on food production, more attention must be given to exploiting crop characteristics such as tolerance of water scarcity or saline soils, and the development of efficient water application methods. Water application methods vary, among other things, in their efficiency of water use and related yield,
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