Archives

International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2019, Volume : 7, Issue : 1
First page : (435) Last page : (440)
Article doi: : http://dx.doi.org/10.18782/2320-7051.7379

Effect of Pre and Post Emergent Herbicides on Growth and Yield Parameter in Transplanted Rice

Bhimashankar^1*, Shivaprasad M.², Rajath H. P.¹, Dinesh Kumar M.¹ and Girijesh G. K.^1
1Department of Agronomy, College of Agriculture, UAHS Shivamogga
²Department of Agronomy, ZAHRS, Mudigere, UAHA shivamogga
*Corresponding Author E-mail: bhimashankar.rastapur@gmail.com
Received: 24.12.2018  |  Revised: 30.01.2019   |  Accepted: 7.02.2019 

 ABSTRACT

A field experiment was conducted during Kharif season 2016 to evaluate the bio-efficacy of new post emergent herbicides along with pre-emergent herbicides in transplanted rice under the hill zone of Karnataka at ZAHRS Mudigere, experiments having ten treatments replicated thrice in RCBD.  Among the herbicidal applications, sequential application of Butachlor  50 EC @ 1.25 kg a.i ha-1 at 3 DAT followed by (fb) Bispyribac sodium 10 SC @ 20 g a.i ha-1 at 21 DAT recorded significantly  higher growth and yield attributes at harvest viz. plant height (83.10 cm), number of tillers (17.60 hill-1), number of  green leaves (11.60 hill-1), leaf area (169.65 cm2 hill-1), panicle length (18.33 cm), panicle weight (2.89 g panicle-1), filled grains (95.60 panicle-1), higher grain (5165 kg ha-1) and straw yields (6258 kg ha-1). Hence, these combinations of herbicides are suitable for the application in transplanted rice. The above treatment was on par with weed free up to 45 DAT (hand weeding) and application of Butachlor 50 EC @ 1.25 kg a.i ha-1 at 3 DAT fb hand weeding at 15 and 30 DAT. Weedy check plots were recorded significantly lower growth and yield attributes which resulted in maximum major nutrients removal by different weeds. However, application of Butachlor 50 EC @ 1.25 kg a.i ha-1 at 3 DAT fb Bispyribac sodium 10 SC @ 20 g a.i ha-1 at 21 DAT was found on par with application of Bensulfuron methyl+Pretilachlor 6.6 GR @ 12.5 kg a.i ha-1 fb Fenoxyprop p ethyl 9.3 EC @ 1250 ml ha-1 at 21 DAT and Butachlor 50 EC @ 1.25 kg a.iha-1 at 3 DAT fb Chlorimuron ethyl+Metsulfuron methyl 20 WP @ 8 g a.i ha-1 at 21 DAT.

Key words: Pre and post emergent herbicides, Growth parameter, Yield parameter, Transplanted rice, Hill zone

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

Cite this article: Bhimashankar., Shivaprasad, M.,  Rajath, H. P., Dinesh Kumar M., and Girijesh, G.K., Effect of Pre and Post Emergent Herbicides on Growth and Yield Parameter in Transplanted Rice, Int. J. Pure App. Biosci. 7(1): 435-440 (2019). doi: http://dx.doi.org/10.18782/2320-7051.7379