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United States Department of Agriculture

Agricultural Research Service

Research Project: INTEGRATED MANAGEMENT OF PLANT-PARASITIC NEMATODES IN COTTON AND PEANUT Title: Site-Specific Detection and Management of Nematodes

Authors
item Mueller, John -
item Khalilian, Ahmad -
item Monfort, W. Scott -
item Davis, Richard
item Kirkpatrick, Terrance -
item Ortiz, Brenda -
item Henderson, William -

Submitted to: Book Chapter
Publication Type: Book / Chapter
Publication Acceptance Date: December 1, 2010
Publication Date: April 1, 2011
Citation: Mueller, J.D., Khalilian, A., Monfort, W.S., Davis, R.F., Kirkpatrick, T.L., Ortiz, B.V., Henderson, W.G. 2010. Site-Specific Detection and Management of Nematodes. In: Oerke, E.C., Gerhards R., Menz G., Sikora, R.A., editors. Precision Crop Protection-the challenge and use of Heterogeneity. Berlin, Germany: Springer. p. 385-402.

Interpretive Summary: Nematode distribution varies significantly throughout a field and is highly correlated to soil texture and other soil-related factors. Field-wide application results in nematicides being applied to areas without nematodes and the application of sub-effective levels in areas with high nematode densities. Efforts to use grid maps as a guide to site-specific application have proven to be too expensive to be cost effective. Recently, the availability of GPS–GIS systems has allowed the use of soil electrical conductivity systems to rapidly and inexpensively develop cost effective soil texture maps. Because nematodes are often influenced by soil texture, these maps can be used to project where nematodes are most likely to occur at high levels within a field. Variable-rate application systems for granular and fumigant nematicides have been developed and tied via software to soil texture maps providing a mechanism for the effective delivery of nematicides in a site-specific, variable-rate manner in individual fields. Efforts in South Carolina, Georgia, and Arkansas are further developing this system and refining our knowledge of how soil texture and other soil-related factors affect the distribution of nematodes in cotton fields.

Technical Abstract: Nematode distribution varies significantly throughout a field and is highly correlated to soil texture and other edaphic factors. Field-wide application results in nematicides being applied to areas without nematodes and the application of sub-effective levels in areas with high nematode densities. Efforts to use grid maps as a guide to site-specific application have proven to be too expensive to be cost effective. Recently, the availability of GPS–GIS systems has allowed the use of soil electrical conductivity systems to rapidly and inexpensively develop cost effective soil texture maps. These maps are used to project where nematodes are likely to occur within a field. Variable-rate application systems for granular and fumigant nematicides have been developed and tied via software to soil texture maps providing a mechanism for the effective delivery of nematicides in a site-specific, variable-rate manner in individual fields. Efforts in South Carolina, Georgia, and Arkansas are further developing this system and refining our knowledge of how soil texture and other edaphic factors affect the distribution of cotton nematodes.

Last Modified: 10/22/2014
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