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Correction of Cone Index for Soil Water Content Differences in a Coastal Plain Soil by W.J. Busscher; P.J. Bauer; C.R. Camp; R.E. Sojka is a Agricultural and Biological Sciences article available to read on EtoBox.

What is Correction of Cone Index for Soil Water Content Differences in a Coastal Plain Soil about?

Soil penetration resistance (cone index) varies with water content. The field variation of water content could mask treatment diffiarences. The correction of cone index data to a single water content would help prevent this. We used equations from TableCurve'" software and from the literature to correct cone indices fo'r differences in soil water contents. Data were taken from two field experiments where cotton (Goossypium hirsutum L.) was grown using conventional and conservation tillage without irrigation, and beans (Phaseolus mlgaris L.) were grown using conventional tillage with microirrigation. Boundary conditions based on hard, dry and soft, wet soils were imposed on the equations. Equations fit the data with coefficients of determination ranging from 0.55 to 0.92 and error mean squares from 1.37 to 6.35. After correction, cone index dependence on water content was reduced. A single-equation correction did not always fit the data across all treatments. Separate corrections, based on treatment, might be required. When corrections required multiple equations, differences may be real or may be a manifestation of the correction differences. In this case, the correction may not be

Who reads Correction of Cone Index for Soil Water Content Differences in a Coastal Plain Soil?

Author

W.J. Busscher; P.J. Bauer; C.R. Camp; R.E. Sojka

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0167-1987)

Published

1997

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)