By Rob Jenkins, C.K. Jain
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This situation decreases water infiltration and increases surface runoff and erosion. Earthworms pierce the ploughing pan, so improving water infiltration and offering new paths for root penetration. Termite excavation activity has a similar effect on soils, and in some cases can reduce the compaction of surface layers. Where organic matter is present in the soil, the bioturbating and decomposing activities of termites can reduce soil compaction, increase its porosity and improve its water infiltration and retention capabilities.
189-194. jackson, Willic1nL R. 1993. Organic Soil ConditIOning. jackson Research Center, Evergreen, CO. QS7 p. J. Nitzche. RotatIOn periods suggested to help control vegetable diseases. New Jersey Extension Service. 1 p. Logsdon, Gene. 1995. Using compost for plant disease control. Farm Scale Composting. JG Press, Inc. Emmaus, PA. Ozores-Hampton, Monica, H. Bryan, and R. McMillian Jr. 1994. "Suppressing disease in field crops". BioCycle. July. p. 60-61. W. ). 1982. Suppressive Soils and Plant Disease.
Soil health refers to the capacity of soil to function as a vital living system, a dynamic system. It involves the idea of soil as a living dynamic organism that functions in a holistic way depending upon its condition or state. Soil health depends on the combined effects of three major interacting components. These are the chemical, physical and biological characteristics of the soil. Soil health is enhanced by management and landuse decisions that consider the multiple functions of soil. It is impaired by decisions that focus only on single functions and short-term solutions, such as increasing but not sustaining crop productivity.
Advances in soil-borne plant diseases by Rob Jenkins, C.K. Jain