Field trials were conducted during the dry seasons of 2007, 2008, and 2009, at the Irrigation Research Station, Kadawa (11039N, 08027E; altitude 500m), of the Institute for Agricultural Research to study the response of the cotton varieties to irrigation methods and nitrogen application. Treatments consisted of factorial combinations of three irrigation methods (check-basin, border strip and furrow), four levels of nitrogen fertilizer (40, 70, 100 and 130 kg  ha-1),  using three cotton varieties(SAMCOT-10, SAMCOT-11 and SAMCOT-13), laid out in a split plot design and replicated three times.  Nitrogen and irrigation methods were factorially combined and assigned to the main plot while cotton varieties were assigned to the sub-plots. Agronomic practices where done to ensure good crop growth. In the three years trial the performance of the varieties was generally better in 2008 than the other years due to better weather and nutrient status of the area. The study showed that check basin irrigation method and 70 kgNha-1 was effective in high number of seeds boll-1, seed oil content and ginning percentage, lint index and lint yield. SAMMCOT 13 was better in most of the parameters measured. Thus the use of 70 kg N ha-1 and SAMCOT 13 cotton variety in check basin irrigation method is an effective way of enhancing cotton yield parameters in the study area.

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