EVALUATION OF FUNGICIDES FOR CONTROL OF COTTON ROOT ROT CAUSED BY PHYMATOTRICHOPSIS OMNIVORA.

Autor: Isakeit, T., Minzenmayer, R. R., Stapper, Jeff, Sansone, C. G.
Zdroj: Proceedings of the Beltwide Cotton Conferences; 2007, p181-184, 4p, 2 Charts
Abstrakt: The objective of this study was to evaluate fungicides for control of root rot (PRR), caused by the fungus Phymatotrichopsis omnivora. The experiments were done in two production areas of Texas (San Patricio and Tom Green Counties) using drip-irrigated fields with a history of severe root rot. In separate experiments, the fungicides were applied to the lower stems of plants or were injected into drip irrigation tape when plants were flowering. Also, two seed treatment fungicides were compared with a stem application of propiconazaole when plants were flowering. With stem applications, disease incidence two months after application was 29% with propiconazole at 2 lb a.i./A, as compared with 49% for the control, and 45 to 59% for the other fungicides. There was no evident root rot control when fungicides were injected through the drip tape. [ABSTRACT FROM AUTHOR]
Databáze: Supplemental Index