Results 241 to 250 of about 1,381 (287)

Trickle and Sprinkler Irrigation of Grain Sorghum

Transactions of the ASAE, 1977
ABSTRACT CROP response and water use efficiency (ratio of grain yield to total crop water use) of grain sorghum in an environmentally con-trolled lysimeter installation were investigated using trickle and sprin-kler irrigation. Also, effects of dif-ferent trickle irrigation frequencies on the crop growth and grain yield were studied.
null C. J. Ravelo, null E. A. Hiler and T. A. Howell   +1 more
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Nitrogen fertigation of trickle-irrigated potato

Fertilizer Research, 1988
This 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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Development of a trickle irrigation scheduling model

Computers and Electronics in Agriculture, 1990
Abstract 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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Trickle Irrigation Using Treated Wastewaters

Journal of the Irrigation and Drainage Division, 1979
A trickling irrigation system was installed in a cotton field to study the effects on the clogging of the emitters using treated wastewater. Also the effects of using reclaimed effluents on cotton yield and soil properties were studied under the the field conditions.
Gideon Oron, Gedaliah Shelef, Berta Turzynski   +2 more
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Infiltration from Trickle Irrigation Source

Journal of Irrigation and Drainage Engineering, 1984
The two-dimensional nonlinear partial differential equation that describes the transient movement of water in an unsaturated porous medium is investigated by using the zero-order continuous linear finite element method. The governing equation is transformed logarithmically to smooth the abrupt changes in the soil-water characteristic relations.
S. Alireza Taghavi, Miguel A. Mariño, Dennis E. Rolston   +2 more
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Trends in trickle irrigation systems development

International Journal of Water Resources Development, 1991
As 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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Global Uniformity of Trickle Irrigation Systems

Transactions of the ASAE, 1985
ABSTRACT Asimulation model for the study of trickle irrigation uniformity was developed which treats the various equipment, system and other factors known to influence emitter flow rate variation. The model provides a tool for the assessment of global trickle uniformity in the sense that the assessment need not be spatially or otherwise restricted.
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Trickle irrigation for home gardens

2015
Reprint ...
Drinkwater, William O., Carpenter, H. E. (Harold E.)   +1 more
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A Statistical Analysis of Trickle Irrigation Uniformity

Transactions of the ASAE, 1987
ABSTRACT TWO of the causes of trickle irrigation nonuniformity are variations in emitter properties and variation in pressure at the emitters. A simple algebraic equation for evaluating the combined effects has been previously proposed (Bralts et al., 1981a) for the case when both emitter and hydraulic properties are normally distributed and ...
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Phosphorus fertigation of trickle-irrigated potato

Fertilizer Research, 1992
A 3-year field study, on Pellic Vertisol, investigated the response of trickle-irrigated potato (Solanum tuberosum L.) to four P levels applied with the irrigation water. Waters supplied with 130 and 120 mg l−1 of N and K, respectively, and with P levels of 0, 20, 40 and 60 mg l−1, were applied when the soil water potential was between 0.03 and 0.04 ...
openaire   +1 more source