Response of Cotton Varieties to the Stage of Topping under Rainfed Condition of Bardiya, Nepal

Authors

  • KB Basnet Institute of Agriculture and Animal Sciences, Rampur, Chitwan, Nepal

DOI:

https://doi.org/10.3126/jiaas.v27i0.712

Keywords:

Variety, topping, sympodial branches

Abstract

A field experiment was conducted to study the impact of topping at different growth stages (3-4, 6-7, 9-10 and 12-13 sympodial branches) on productivity of two (Tamcot SP-37 and H-777) cotton varieties under rainfed condition at the Kumbher Farm (Bardiya district) of Cotton Development Board in 1995. The experiment was laid out in a Randomized Complete Block Design with four replications. The interaction effect between variety and stages of topping showed that significantly higher yield (1.23 t/ha) was produced by topping plants at the stage of 12-13 sympodial banches of the variety Tamcot SP-37 as compared to all other treatments. At all stages of topping the yield produced by Tamcot SP-37 was significantly higher than H-777. The average seed cotton yield (1.03 t/ha) of Tamcot SP-37 was significantly higher than that of H- 777 (0.71 t/ha) and the difference in yield was 45.0%. The seed-cotton yield increased from 0.75 to 1.00 t/ ha with the postponed of topping from 3-4 to 12-13 sympodial branches, but significant difference was recorded between late (12-13 sympodial branches) and early (3-4 and 6-7 sympodial branches) stages of topping. Thus, for rainfed condition of Bardiya Tamcot SP-37 was a suitable variety with 12-13 sympodial branches as an appropriate stage of topping for sustainable production of cotton. Key words: Variety, topping, sympodial branches. J. Inst. Agric. Anim. Sci. 27:165-168 (2006)

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Published

2006-05-01

How to Cite

Basnet, K. (2006). Response of Cotton Varieties to the Stage of Topping under Rainfed Condition of Bardiya, Nepal. Journal of the Institute of Agriculture and Animal Science, 27, 165–168. https://doi.org/10.3126/jiaas.v27i0.712

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Section

Research Notes