Journal•ISSN: 0044-7978
Journal of the Irrigation and Drainage Division
American Society of Civil Engineers
About: Journal of the Irrigation and Drainage Division is an academic journal. The journal publishes majorly in the area(s): Irrigation & Water flow. It has an ISSN identifier of 0044-7978. Over the lifetime, 635 publications have been published receiving 16663 citations.
Topics: Irrigation, Water flow, Water conservation, Drainage, Surface irrigation
Papers published on a yearly basis
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TL;DR: An extensive literature review of all available salt tolerance data was undertaken to evaluate the current status of our knowledge of the salt tolerance of agricultural crops as mentioned in this paper, concluding that crops tolerate salinity up to a threshold level above which yields decrease approximately linearly as salt concentrations increase.
Abstract: An extensive literature review of all available salt tolerance data was undertaken to evaluate the current status of our knowledge of the salt tolerance of agricultural crops. In general, crops tolerate salinity up to a threshold level above which yields decrease approximately linearly as salt concentrations increase. Our best estimate of the threshold salinity level and yield decrease per unit salinity increase is presented for a large number of agricultural crops. The methods of measuring appropriate salinity and plant parameters to obtain meaningful salt tolerance data and the many plant, soil, water, and environmental factors influencing the plant's ability to tolerate salt are examined.
3,200 citations
TL;DR: In this article, a theory is presented that develops the functional relationships among saturation, pressure difference, and permeabilities of air and liquid in terms of hydraulic properties of partially saturated porous media, based only on the capillary pressure-desaturation relationships for porous media.
Abstract: Following the Burdine approach, based on a model developed by Wyllie and Spangler, a theory is presented that develops the functional relationships among saturation, pressure difference, and permeabilities of air and liquid in terms of hydraulic properties of partially saturated porous media. The theory is based only on the capillary pressure-desaturation relationships for porous media. Procedures for determining these hydraulic properties from capillary pressure-desaturation curves are described. Permeabilities to the wetting and nonwetting phases as a function of capillary pressure and saturation are predicted from the experimentally determined hydraulic properties. The results for all media studied are in close agreement with the theory.
1,953 citations
TL;DR: In this article, four methods for estimating potential evapotranspiration are compared and evaluated: the Class A evaporation pan located in an irrigated pasture area, the Hargreaves equation, the Jensen-Haise eguation, and the Blaney-Criddle method.
Abstract: Increasing population and needs for an augmented food supply give greater importance to improved procedures for estimating agricultural water requirements both for irrigation and for rain-fed agriculture. Four methods for estimating potential evapotranspiration are compared and evaluated. These are the Class A evaporation pan located in an irrigated pasture area, the Hargreaves equation, the Jensen-Haise eguation, and the Blaney-Criddle method. The evaporation pan is rated as superior to the other methods. However, the difference in reliability between the pan and the Hargreaves method are not considered to be very significant. Both the Jensen-Haise and the Hargreaves methods require either measured or estimated solar radiation. Methods are presented for estimating solar radiation from the difference between maximum and minimum temperature, from the percentage of possible sunshine, and from relative humidity. These procedures have some limitations, but provide improved reliability and make the estimates more universal.
1,420 citations
TL;DR: The summary of Grassi's thesis by Christiansen illustrates a multiple correlation approach to predicting evapotranspiration, e.g., the ratio of evaporation rates to the values obtained from the correlation equation were correlated with the next variable as mentioned in this paper.
Abstract: The summary of Grassi's thesis by Christiansen illustrates a multiple correlation approach to predicting evapotranspiration, Et. Grassi related evapotranspiration rates to all meterological and crop data provided by the authors in addition to theoretical solar radiation reaching the outer atmosphere. A sequential analysis techniqe was used in an attempt to obtain independent empirical coefficients for the meteorological variables and crop factors presented. In this procedure, Et was correlated with the first meteorological [va]riable, (either extraterrestrial and cloud cover, or incident solar radiation, [] evaporation in this case) using only those values of Et near the potential [] growth state. Then, the ratios of Et to the values obtained from the correlation equation were correlated with the next variable.
822 citations
TL;DR: In this article, improved crop coefficients for various Pacific Northwest irrigated crops were developed for estimating crop evapotranspiration (ET) from estimates or measurements of reference ET, based on that for well watered, actively growing alfalfa with sufficient growth for near maximum ET in arid, irrigated regions.
Abstract: Improved crop coefficients for various Pacific Northwest irrigated crops were developed for estimating crop evapotranspiration (ET) from estimates or measurements of reference ET. Reference ET was based on that for well watered, actively growing alfalfa with sufficient growth for near maximum ET in arid, irrigated regions. ET for the alfalfa reference crop and other crops was measured with sensitive weighing lysimeters at the field site near Kimberly, Idaho. The new crop coefficients are basal or minimal coefficients for conditions when soil evaporation is minimal but root-zone soil moisture is adequate. When combined with improved estimates of evaporation from wet soils, they should permit more accurate estimates of daily crop ET, more accurate irrigation scheduling, and more reliable estimates of crop water requirements. Curves were developed for alfalfa, potatoes, snap beans, sugarbeets, peas, sweet and field corn and winter and spring cereals.
614 citations