THE EFFECT OF TILLAGE MANAGEMENT ON TREND AND SPATIAL VARIATION OF SOME SOIL PROPERTIES IN STEEPLANDS

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MARZVAN S.; ASADI H.; DAVATGAR N.

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Journal: Journal of Soil Management and Sustainable Production Year:2015 | Volume:5 | Issue:1 Page(s): 97-111

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Title

THE EFFECT OF TILLAGE MANAGEMENT ON TREND AND SPATIAL VARIATION OF SOME SOIL PROPERTIES IN STEEPLANDS

Author(s)

MARZVAN S. | ASADI H. | DAVATGAR N. | Issue Writer Certificate

Keywords

DRYLANDQ2

RANDOM COMPONENTQ2

SEMI VARIOGRAMQ2

TILLAGE MANAGEMENTQ2

Abstract

It is essential to understand ununiformity and variability of soil properties for proper cultivation management. Study scale and TILLAGE MANAGEMENT affect RANDOM COMPONENT of soil spatial variability. To study the effects of these factors on variability of soil properties in adjacent lands of different tillage type, soil sampling was performed linearly along contour line from the middle position of slope with 5 m intervals. In overall, 45 soil samples were collected from a field with conventional up-down tillage and 40 samples from an adjacent field with contour tillage. Soil samples were analyzed for, soil texture, bulk density, saturation percentage, mean weight and geometric mean diameter of aggregates, organic matter and calcium carbonate equivalent. The data obtained were analyzed based on t-test by SPSS. All of the studied soil properties were significantly (P<0.05) different between the two fields. But the trend analysis showed that these differences could not be due to tillage in all cases. Spatial analysis of the data for all data sets and the data of each field separately, showed different spatial pattern for each soil properties and the semivariograms were modeled differently for the two fields. The range and the degree of spatial dependency were also different. For example, the fitted model was spherical for sand, silt, clay, bulk density and organic matter with the ranges of 46, 18, 36, 97 and 37 m respectively, in the fields with contour tillage, while the models were Gaussian, Gaussian, exponential, linear and linear with the ranges of 245, 51, 336, 217 and 217 m, respectively for the mentioned properties when all data set were analyzed.

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APA: Copy

MARZVAN, S., ASADI, H., & DAVATGAR, N.. (2015). THE EFFECT OF TILLAGE MANAGEMENT ON TREND AND SPATIAL VARIATION OF SOME SOIL PROPERTIES IN STEEPLANDS. ELECTRONIC JOURNAL OF SOIL MANAGEMENT AND SUSTAINABLE PRODUCTION, 5(1), 97-111. SID. https://sid.ir/paper/209924/en

Vancouver: Copy

MARZVAN S., ASADI H., DAVATGAR N.. THE EFFECT OF TILLAGE MANAGEMENT ON TREND AND SPATIAL VARIATION OF SOME SOIL PROPERTIES IN STEEPLANDS. ELECTRONIC JOURNAL OF SOIL MANAGEMENT AND SUSTAINABLE PRODUCTION[Internet]. 2015;5(1):97-111. Available from: https://sid.ir/paper/209924/en

IEEE: Copy

S. MARZVAN, H. ASADI, and N. DAVATGAR, “THE EFFECT OF TILLAGE MANAGEMENT ON TREND AND SPATIAL VARIATION OF SOME SOIL PROPERTIES IN STEEPLANDS,” ELECTRONIC JOURNAL OF SOIL MANAGEMENT AND SUSTAINABLE PRODUCTION, vol. 5, no. 1, pp. 97–111, 2015, [Online]. Available: https://sid.ir/paper/209924/en

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