Effects of Mepiquate Chloride on Growth, Fruiting and Yielding Performances of Field-Grown Cotton

บทคัดย่อ

The effects of Mepiquat chloride (Pix) on the performances of 58 cotton plots were studied during 1994 and 1995 at Chaibadan district, Lop Buri Province. Pix application at early blooming reduced significantly vegetative growth (node production, inter-node length) during the reproductive period and shortened the crop duration. Over all plots the average seed-cotton yield was not improved by Pix despite significant changes in boll distribution pattern and boll-size. Large variation in yield response existed between plots. The response depended on the rate of increase in internode length prior to Pix application together with fruit retention of the first fruiting branches.