International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 1
First page : (481) Last page : (487)
Article doi: http://dx.doi.org/10.18782/2320-7051.5094

Effect of Sowing Date on Crop Phenology, Growth, Development and Yield in Cotton Hybrids

Renuka Herkal* and U. V. Mummigatti
Agricultural Research Station-Dharwad, University of Agricultural Sciences, Dharwad - Karnataka, India
*Corresponding Author E-mail: herakalrenuka@gmail.com
Received: 29.06.2017  |  Revised: 26.07.2017   |  Accepted: 1.08.2017  

 ABSTRACT

In the current scenario of changing climate throughout the world, identification of suitable crop genotypes for the future predicted climate is gaining importance. An experiment was conducted using six cotton hybrids grown with two dates of sowing D1(Normal) and D2 (Delay) in RBD design at Agricultural Research Station, University of Agricultural Sciences, Dharwad, Karnataka during Kharif 2012. The hybrids were evaluated for genotypic variability for growth, phenological, biophysical parameters, yield and yield attributing characters under rainfed condition.  The results indicated that the number of days to 50% boll opening was more in D1(142.1 days) as compared to D2(133.4). The duration of boll growth in D1 was 59.38 days while in D2 it was 46.39 days. Significant increase in boll weight of all the hybrids in D2 was observed as compared to D1. The yield increase was about 25.82% in D1 compared to D2. Further, there was decrease in LAI, SPAD readings and number of monopodia in D2 as compared to D1, which is the main reason for decrease in seed cotton yield in D2.

Key words: Dates of sowing, TDM, LAI, SPAD and Phosynthetic rate

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Herkal, R. and Mummigatti, U.V., Effect of Sowing Date on Crop Phenology, Growth, Development and Yield in Cotton Hybrids, Int. J. Pure App. Biosci.6(1): 481-487 (2018). doi: http://dx.doi.org/10.18782/2320-7051.5094