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International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 5
First page : (556) Last page : (563 )
Article doi: : http://dx.doi.org/10.18782/2320-6959

Growth and Yield Attributes, Quality Parameters and Seed Cotton Yield of Hybrid Cotton (Gossypium spp) as Influenced by Weed Management Practices in Southern Dry Zone of Karnataka

Honnappa, H. M.¹*, Shekara, B. G.², Kalyana Murthy, K. N.³, Basavaraja, P. K.⁴ and Doreswamy, C.⁵

¹Department of Agronomy, College of Agriculture, UAS, GKVK, Bengaluru-560065
²Professor and Head, AICRP on Fodder crops, ZARS, V.C. Farm, Mandya
³Professor and Head, Department of Agronomy, College of Agriculture, UAS, GKVK, Bengaluru-560065
⁴Professor, Department of Soil Science and Agricultural Chemistry, College of Agriculture,
UAS, GKVK, Bengaluru-560065
*Corresponding Author E-mail: honnappahm918@gmail.com

Received: 7.07.2018  |  Revised: 20.08.2018   |  Accepted: 27.08.2018  

 

 ABSTRACT

A field experiment was conducted at ZARS, V. C. Farm, Mandya during Kharif season of 2016 in Southern Dry Zone of Karnataka to identify suitable herbicide for effective and economical weed management in hybrid cotton. The experiment comprised of 13 treatments having two pre-emergence herbicides (alachlor and  pendimethalin) applied at 3 DAS and three early post emergence herbicides (pyrithiobac sodium, fenoxaprop p-ethyl, quizalofop ethyl) applied at 2 to 4 leaf stage of weeds alone or in combination with pre-emergence herbicides and compared with hand weeding and weedy check. Among herbicides treatments Pendimethalin 38.75 EC @ 0.75 kg a.i. ha-1 as pre-emergence spray applied at 3 DAS fb Pyrithiobac sodium 10 SC @ 62.5g a.i. ha-1 + Fenoxaprop p ethyl 9 EC @ 62.5 g a.i. ha-1 at 2 to 4 leaf stage of weeds  has recorded significantly higher dry matter accumulation (408.80 g plant-1), seed cotton yield (2201 kg ha-1), boll weight (3.72 g) and harvested bolls (37.65 No. Plant-1) as compared to other herbicide treatments. The weedy check recorded lower dry matter accumulation (246.24 g plant-1), seed cotton yield (1278 kg ha-1), boll weight (2.43 g) and harvested bolls (29.00 No. Plant-1).

 

Key words: Hybrid cotton, Herbicides, Seed cotton yield, Dry matter accumulation, Boll weight and Harvested bolls

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

Cite this article: Honnappa, H.M., Shekara, B.G., Kalyana Murthy, K.N., Basavaraja, P.K. and Doreswamy, C., Growth and Yield Attributes, Quality Parameters and Seed Cotton Yield of Hybrid Cotton (Gossypium spp) as Influenced by Weed Management Practices in Southern Dry Zone of Karnataka, Int. J. Pure App. Biosci.6(5): 556-563 (2018). doi: http://dx.doi.org/10.18782/2320-7051.6959