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Effect of Terraclor Super X and Di-syston on Cotton Seedling Disease and Thrips on Delta and Pineland 5409 Cotton

Ronald Poole, K.S. McLean and G.W. Lawrence


 
ABSTRACT

A test was conducted to examine the effects of Terraclor Super X and Di-Syston for the control of cotton seedling disease and early season thrips. Treatments consisted of Terraclor Super X EC, a formulated combination of Terraclor Super X and Di-Syston EC and Terraclor Super X EC tank mixed with Di-Syston 8EC. Plots consisted of four rows with two of the four rows inoculated with Pythium spp. and Rhizoctonia solani infested oat seed. At 7 days after planting all inoculated plots contained significantly fewer plants compared to the naturally infested plots. However, by 14 through 42 days after planting there were no significantly differences in stand between any treatment and the control. At 14 and 21 days after planting the Terraclor Super X and control plots contained significantly more thrips per plant compared to the Terraclor Super X/Di-Syston formulation treatments. There were no significant differences in plant height at harvest between any of the treatments. Seed cotton yields ranged from a high of 2070.3 to 1374.5 lb/acre for the naturally infested Terraclor Super X/Di-Syston (64 oz/acre) and the inoculated Terraclor Super X/Di-Syston (88 oz/acre) respectively.



Reprinted from Proceedings of the 1997 Beltwide Cotton Conferences pp. 142 - 143
©National Cotton Council, Memphis TN

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Document last modified Sunday, Dec 6 1998