Online citations, reference lists, and bibliographies.
← Back to Search

Spatial Interpolation Of Soil Hydraulic Properties And Simulated Rice Yield

M.C.S. Wopereis, A. Stein, M. Kropff, J. Bouma
Published 1996 · Environmental Science

Save to my Library
Download PDF
Analyze on Scholarcy
Share
. Simulated estimates of crop yield were made for rainfed rice in a 50 ha dryland rice area. The aim was to investigate how soil units and management units of different sizes with different yields could be used to obtain values for areas of land. Two procedures were applied. First, yields were simulated at six sites, that were representative of six soil mapping units. Second, yields were simulated using soil information from 133 auger sites, and were interpolated over management units using block kriging. Differences between the two procedures for the total area and for a test set of 22 additionally sampled locations were small. A 60% increase in precision was achieved when relatively large management units were defined. A Geographical Information System was used to identify areas with greatest yield potential for rainfed dryland rice. Statistical analysis showed that the six soil units could be grouped into three yield classes. The largest yields were obtained for a sub-area comprising 11% of the survey area which was associated with a slowly permeable Bg horizon in the soil profile. It was concluded that the best procedure for the spatial interpolation of simulated rice yield should be based on preliminary simulation of crop yields. A sensitivity analysis of the impact of weather variability and soil heterogeneity on the variation of yield was useful to detect the importance of their contributions. The procedures developed in this study are of value in obtaining a reliable estimate of average yield, and can consequently be used for associated cost-benefit calculations.
This paper references
10.2136/SSSAJ1987.03615995005100030021X
Spatial Variation of Soil Properties and Rice Yield on Recently Cleared Land
B. B. Trangmar (1987)
10.1007/BF02082532
Cokriging nonstationary data
A. Stein (1991)
10.1016/0022-1694(81)90216-X
Estimation of the moisture supply capacity of some swelling clay soils in The Netherlands
J. Bouma (1981)
10.2134/JEQ1983.00472425001200030002X
Assessing the suitability of soils with macropores for subsurface liquid waste disposal
J. Bouma (1983)
10.1016/0016-7061(87)90036-X
Modelling production of field crops and its requirements
C. Wit (1987)
10.2136/SSSAJ1982.03615995004600020047X
Measuring the Hydraulic Conductivity of Soil Horizons with Continuous Macropores1
J. Bouma (1982)
10.1002/ENV.3170060406
Extension of spatial information, Bayesian kriging and updating of prior variogram parameters
H. Cui (1995)
10.2136/SSSAJ1985.03615995004900050033X
Use of Soil Survey Data for Regional Soil Water Simulation Models1
J. Wösten (1985)
10.2136/SSSAJ1980.03615995004400050002X
A closed-form equation for predicting the hydraulic conductivity of unsaturated soils
Van Genuchten (1980)
10.1016/0022-1694(86)90010-7
A procedure to identify different groups of hydraulic-conductivity and moisture-retention curves for soil horizons
J. Wösten (1986)
10.1111/J.1475-2743.1992.TB00899.X
A comparison of qualitative and quantitative physical land evaluations, using an assessment of the potential for sugar‐beet growth in the European Community
H. Lanen (1992)
10.1016/0016-7061(89)90059-1
Accuracy in Predicting Moisture Deficits and Changes in Yield from Soil Maps
A. Bregt (1989)
10.2136/SSSAJ1975.03615995003900030021X
A Field Study of Soil Water Depletion Patterns in Presence of Growing Soybean Roots: I. Determination of Hydraulic Properties of the Soil1
L. M. Arya (1975)
10.2136/SSSAJ1991.03615995005500010003X
Construction of Isolinear Maps of Soil Attributes with Empirical Confidence Limits
A. Bregt (1991)
10.1111/J.1365-2389.1992.TB00128.X
Sample adequately to estimate variograms of soil properties
R. Webster (1992)
10.2136/SSSAJ1991.03615995005500020049X
Suction Crust Infiltrometer for Measuring Hydraulic Conductivity of Unsaturated Soil Near Saturation
H. Booltink (1991)



This paper is referenced by
Semantic Scholar Logo Some data provided by SemanticScholar