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Sudan Journal of Agricultural Research

The response of three cotton varieties to sowing date under rainfed conditionsin Blue Nile State

Osama M. A. Elhassan and Abdelrahman H. A/latif

Abstract

The experiment was conducted under rain-fed conditions at Damazin Research Farm for four seasons (2000/01-2003/04). The objective was to study the influence of sowing date on growth, yield and lint quality of cotton. Treatments were factorial combinations of three cultivars (Barac 67/B, Albar 57/12 and Almac 80/15) and five sowing dates (mid July, late July, 1st August, mid August and late August). They were arranged in a randomized complete block design with four replications. Observations on growth and development attributes, yield, yield components and fiber characteristics were recorded. Data for each season and combined data was statistically analyzed. Differences among cultivars for most parameters were significant. Barac 67/B produced highest total and reproductive dry matter, showed better yield components and out-yielded other cultivars. Sowing date significantly affected all the characters studied. Early sowing (mid July) resulted in better growth attributes, heaviest dry matter production and highest yield components than other delayed sowings. Consequently, seed cotton, lint yield and fiber quality were substantially improved.
 

Sudan Journal of Agricultural Research Vol. 9 (2007) PP. 55-66