Response of Lashata Cotton Cultivar to Foliar Application Time and Different Levels of Mepiquat Chloride (Pix)

A. Sarkees, N.

	Response of Lashata Cotton Cultivar to Foliar Application Time and Different Levels of Mepiquat Chloride (Pix)
Journal of Tikrit University For Agriculture Sciences
Article 1, Volume 12, Issue 1, 2012, Pages 110-120
Author
N. A. Sarkees
Abstract
ِAbstract : A field experiment was carried out at Field experiments, College of Agriculture, Abu-Graib, University of Baghdad, during seasons 2007 and 2008 to study the effect of three foliar application dates viz. (at flowering buds formation, at flowering stage and at boll formation), and three different levels of growth regulators (Pix) i.e. (500, 1000 and 1500 cm3 ha-1) on growth traits, yield and its components. The results showed that the foliar application dates, Pix levels and interaction between them had significant effect on field traits, yield and its components, excluding some traits for both seasons. There was excessive seed cotton yield and ginning turn out rate applying at flowering stage for both seasons, resulted in increaseing of total boll number per plant, open bolls per plant, seed index and fruiting branches per plant, because of plant dry matter as an outcome of increase of number of leaves and surface area of broad leaf per plant. Foliar application of 1500 cm3 ha-1 treatment showed increaseing in seed cotton yield, lint yield and ginning turn out rate for both seasons. Seed cotton yield, lint yield and ginning turn out rate surpassed when (Pix) was applied of 1000 cm3 ha-1 treatment at flowering stage of (62.6, 71.8 %,) and (66.9, 89.2%) and (64.4, 72.95%) for both seasons respectively.
Keywords
Lashata Cotton; Mepiquat Chloride

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