| Autor: |
Overstreet, Charles, Burris, E., McGawley, Edward C., Padgett, G. B., Wolcott, Maurice |
| Zdroj: |
Proceedings of the Beltwide Cotton Conferences: Cotton Disease Council; Jan2008, p203-209, 7p, 3 Color Photographs, 8 Graphs |
| Abstrakt: |
The alluvial soils of Louisiana are highly variable even within a field making recommendations for management options based on a single threshold level very difficult. Trials conducted during the past several years have indicated certain areas within these fields yield extremely well even in the presence of high levels of nematodes and fail to respond to the application of a pre-plant fumigant such as 1,D-dichloropropene. Nematode distribution within the soil profile to a depth of 24 inches may also be factor. In two locations that were the sites of a three-year nematicide study, the soils that responded to the application of the fumigant had root-knot nematode populations all the way to 24 inches while the non-responsive areas had root-knot nematode only within the upper six inches. Although nematode populations are important, several factors of the soil such as texture, nutrient availability, or pH may impact the amount of damage actually caused nematodes. Site-specific application for nematode problems should incorporate both nematode populations and nematicide response. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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