Summary
The influence of nonuniform water application by sprinkler on the variability of soil water content and corn yield was studied on two experimental plots differing in their texture and hydraulic characteristics (Table 2). Variograms, autocorrelations and cross-correlations of soil water contents (θ), crop yield of sweet corn (Y), and net water application (Q) were calculated (Fig. 2). The correlograms show trends which are similar for all these three variables, θ , Y and Q. The trend of soil water content and crop yield appears to be casued by the trend in water application. Filtering out the trends by scaled variograms shows that soil properties of both experimental plots may be considered as homogeneous so that the responses of soil water content and in turn of crop yield resulted mainly from the nonuniformity of water application (Fig. 3). Redistribution of soil water after irrigation caused crop yield to be more uniform in plot B, in which the soil hydraulic properties led to more significant water flow, than in plot A. The coefficient of variation of dry matter yields in the two plots were 24 and 34%, respectively (Table 5). Dry matter yield response to net water application, as measured in collection cans, was fitted to the Mitscherlich's model — the “law of diminishing returns” (Fig. 4). Using normal distribution to characterize the probability density function of water application (Fig. 5) and the Christiansen coefficient to characterize the uniformity criteria in the fitted Mitscherlich's model enabled relative crop yield to be expressed as a function of Christiansen coefficient and the total amount of irrigation water (Fig. 6).
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References
Bresler E, Dasberg S, Russo D, Dagan G (1981) Spatial variability of crop yield as a stochastic soil process. Soil Sci Soc Am J 45:600
Bresler E, Dagan G, Hanks J (1982) Statistical analysis of crop yield under controlled linesource irrigation. Soil Sci Soc Am J 4:841
Brooks RH, Corey AT, (1964) Hydraulic properties of porous media. Colorado State University, Hydrology Paper no. 3
Campbell JB (1978) Spatial variation of sand content and pH within a single contiguous delineation of two soil mapping units. Soil Sci Soc Am J 42:460
Christiansen JE (1942) Irrigation by sprinkling. California Agricultural Experiment Station — Bulletin 670
Cohen OP, Bresler E (1967) The effect of non-uniform water application on soil moisture content, moisture depletion, and irrigation efficiency. Soil Sci Soc Am Proc 31:117
Hart WE (1961) Overhead irrigation pattern parameters. Agric Eng 42:354
Hart WE (1964) Subsurface distribution of non-uniform applied surface waters. Trans. ASAE 15:656–661, 666
Howell DT (1964) Sprinkler nonuniformity characteristics and yield. Proc ASCE 90 (IR 3):55
Journel AG, Huijbregts ChJ (1978) Mining Geostatistics. Academic Press, New York
Mitscherlich EA (1930) Die Bestinuń des dengenbedurfnissum des bodens. Berlin Verlagsbuchhandlung Paul Parey
Russo D, Bresler E (1981) Soil hydraulic properties as stochastic processes. I: an analysis of field spatial variability. Soil Sci Soc Am J 45 (4):682
Russo D, Bresler E (1982) Soil hydraulic properties as stochastic processes. II: Errors of estimates in heterogeneous yield. Soil Sci Soc Am J 46(1):20
Zaslavsky D, Mokady RS (1966) Non-uniform distribution of phosphorus fertilizer: An analytical approach. Soil Sci 104:1
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Contribution from the Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
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Stern, J., Bresler, E. Nonuniform sprinkler irrigation and crop yield. Irrig Sci 4, 17–29 (1983). https://doi.org/10.1007/BF00285554
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DOI: https://doi.org/10.1007/BF00285554