Effect of staple rate and thrips injury on cotton development

Document Type

Conference Proceeding

Publication Date

12-1-1999

Abstract

Experiments were conducted at the Northeast Research Station, St. Joseph, LA and the Macon Ridge Research Experiment Station, Winnsboro, LA to determine the effect of Staple (pyrithiobac) rate and thrips injury on cotton development. Stoneville 474 was planted May 26 and June 23 in Winnsboro and St. Joseph, respectively, A split-plot experimental design with four replications was used. Main plots were Temik 15G (aldicarb, 0.5 lb ai/A) applied in-furrow or no Temik. Thrips were controlled with the Temik treatment. Sub plots were Staple 85WP applied at 0, 0.5, 1, 2, 4, 8, and 16 oz ai/A to 2-3 leaf cotton. Two center rows of each plot was hand-thinned to 2-3 plants per row foot. Leaf area per plant was obtained from a 0.5m section of row 10 and 16 days after treatment (DAT) at St. Joseph and 8, 17, and 34 DAT at Winnsboro. Height of 10 cotton plants and total nodes and node of the first square were determined at the time. After flowering, nodes above white flower (NAWF) was determined from 10 plants weekly until NAWF totaled no more than 5. Plots were kept weed free by hand weeding. Normal cultivation and fertility practices were followed.

Publication Source (Journal or Book title)

Proceedings of the 1999 Beltwide Cotton Conference, January, 1999, Orlando, Florida, USA

First Page

731

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