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All Journal SAINS TANAH - Journal of Soil Science and Agroclimatology
Paul, Swapan Kumar
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Evaluating the impact of planting dates on seed cotton production across diverse cultivars under variable temperature conditions Mozumder, Shefali; Uddin, F M Jamil; Sarkar, Md Abdur Rahman; Rashid, Md Harun; Paul, Swapan Kumar; Sarkar, Shubroto Kumar; Haque, Md Anowarul; Kabir, Md Humayun
SAINS TANAH - Journal of Soil Science and Agroclimatology Vol 22, No 2 (2025): December
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/stjssa.v22i2.93612

Abstract

Cotton yield in Bangladesh is often constrained by suboptimal planting times under subtropical conditions.  The present study aimed to evaluate the impact of planting dates on seed cotton yield across four cultivars to identify the optimal timing for profitable production. A three replicated field trial was conducted at the Cotton Research Farm in Gazipur using split-plot design during the cotton growing season of 2022-23.  Four cotton cultivars: DM-3, Rupali-1, Suvra, and CB-12 were planted on five dates at ~15-day intervals from June to August (viz: 5 June, 20 June, 5 July, 20 July, and 5 August). Results showed that planting on 20 July significantly increased seed cotton yield by 2.580 t ha⁻¹ compared to 5 June, while the 5 August planting produced the lowest yield and ginning outturn (8.9%) (P < 0.01). Among cultivars, CB-12 achieved the highest yield (2.14 t ha⁻¹), followed by Rupali-1 (1.93 t ha⁻¹) and DM-3 (1.56 t ha⁻¹). Although no significant interaction was observed between planting date and cultivar, CB-12 consistently performed best on 20 July, with similar trends for the other cultivars. The study emphasizes the significance of choosing the most suitable planting dates and cultivars. Adoption of 20 July as the ideal planting date may enhance productivity, offering valuable guidance for cotton growers, researchers, and policymakers.
Co-Authors Haque, Md Anowarul Kabir, Md Humayun Mozumder, Shefali Rashid, Md Harun Sarkar, Md Abdur Rahman Sarkar, Shubroto Kumar Uddin, F M Jamil