Browsing by Author "Runkles, J. R."
Now showing items 1-20 of 27
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Absorption and accumulation of chloride ions by pecan (Carya illinoensis Koch) seedling rootstocks Hanna, J. Dan (Texas A&M University. Libraries, 1972)The affects [sic] of absorption and accumulation of Cl by pecan (Carya illinoensis Koch) seedlings were investigated. Field studies were conducted to determine the Cl accumulation characteristics of pecan seedlings of known ...
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Wendt, C. W.; Runkles, J. R.; Gerst, M. D.; Harbert, H. P. III; Hutmacher, R. B. (Texas Water Resources Institute, 1980-08)A study was conducted to develop automated pivot sprinkler irrigation systems and determine if such systems use less water and energy than manually operated systems. The study was conducted near Earth, Texas, using irrigation ...
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Parker, Charles Frederick (Texas A&M University. Libraries, 1967)Production data from a large herd of Santa Gertrudis cattle were analyzed to estimate the importance of certain genetic and environmental parameters. Partial records were available for 6,436 weaning calves from 2,927 ...
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Hardin, Daniel C.D397 (Texas A&M University. Libraries, 1981)The purposes of this study was to quantify the benefits of using a wind energy system for irrigation. The value of wind energy was estimated on both a static basis (where the annual value of wind power was assumed to be ...
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Bhuiyan, A. F. M. Sadiqul Islam (Texas A&M University. Libraries, 1971)Unsteady vertical flow of water in unsaturated soils was simulated utilizing S/360 CSMP (Continuous System Modeling Program), a recently developed language specially designed for digital simulation of transient phenomena ...
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The effect of porosity on shearing resistance and thermal conductivity for amorphous soils in vacuum Waters, Ronald Hobart (Texas A&M University. Libraries, 1967)In support of the ensuing requirements for basic knowledge of the engineering properties of lunar surface materials, a study was made of the relationship between thermal conductivity, porosity, and shearing strength for ...
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Faruque, Abu Hena Mohammed (Texas A&M University. Libraries, 1968)
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Glass, Larry Joe (Texas A&M University. Libraries, 1971)Subirrigation of summer squash using a fluctuating water table was conducted in 12 lysimeters containing undisturbed soil cores. The soil consisted of a 45-cm depth of sandy loam topsoil and a sandy clay subsoil. The study ...
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Velasco Molina, Hugo Alejo (Texas A&M University. Libraries, 1966)The relative ionic concentration and the total ionic concentration of irrigation waters are two main factors affecting soils. The present study investigated variations in relative ionic concentration and total ionic ...
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Moore, Jaroy (Texas A&M University. Libraries, )Maintenance of permanent agriculture is often difficult to achieve in arid regions because of limited water and associated salinity problems. Water quality standards for irrigation water are generally very broad and often ...
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Namken, Leo Neal (Texas A&M University. Libraries, 1970)Radical changes of cotton plant stems were monitored throughout the 1969 and 1970 crop seasons under field conditions using linear variable displacement transducers. The absolute amount of stem contraction from the 0600 ...
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Lewis, Roger Branson (Texas A&M University. Libraries, )The stress-day index is a concept whereby plant-water stress is characterized quantitatively. Its formulation consists of the product of a stress-day factor and a crop-susceptibility factor. The stress-day factor is an ...
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Gerard, C. J.; Hipp, B. W.; Runkles, J. R.; Bordovsky, D. J.; McCully, W. G. (Texas Water Resources Institute, 1981-08)The suitability of water for irrigation depends upon many factors, of primary concern is the quantity and quality of salts present in the water Ayers and Wescot1. If total dissolved solids in the irrigation water are too ...
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Reeves, Gary Neil (Texas A&M University. Libraries, 1969)There is currently a growing interest in the study of soil penetration. This interest has both civil and military support. Based on the observation of considerable field and laboratory data, an analytic scheme is developed ...
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Muncrief, George Edward (Texas A&M University. Libraries, 1983)The chief sources of groundwater for the Texas Winter Garden are the Carrizo (Dimmit, Zavala, Frio, and LaSalle Counties) and Edwards (Uvalde County) Aquifers. The major user of groundwater in the region is irrigation. ...
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Adam, Adam Ibrahim (Texas A&M University. Libraries, 1982)The major soils comprising the Gezira scheme are Hosh, Suleimi and Laota. These soils are dark grayish brown to dark brown, calcareous clays with < 1% organic matter.<p> The mineralogical data show that the soils of the ...
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Clapp, Thomas Wright (Texas A&M University. Libraries, 1969)The effects of the intentional replacement of a cover of grass by one of pricklypear cactus on several soil properties were investigated. The study area was located on the King Ranch near Kingsville, Texas. The soils ...
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Morse, Richard Arden (Texas A&M University. Libraries, 1969)Results are presented of an investigation of the effect of oil production rate on solution gas drive performance of a thin, horizontal reservoir. Numerical model simulation of a producing reservoir included the effects of ...
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Acosta-Gonzalez, Gilberto (Texas A&M University. Libraries, )An optimization model was developed to allocate surface and groundwater resources under various water management policies which might be implemented to control land-surface subsidence. This model allocated the water resources ...
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Clark, Ray Nolan (Texas A&M University. Libraries, 1970)Since plant water deficits are extremely hard to predict from either soil moisture or atmospheric demands, direct measurements on the plants are evaluated as indicators of moisture stress in crops. The plant measurements ...