Evaluation of bispyribac sodium and other herbicides in transplanted rice

Publication Date : 11/05/2017

DOI : 10.22623/IJAPSA.2017.3033.3FN4Y


Author(s) :

Tathagata Das , Brajagopal Mandal , Mahua Banerjee , G. C. Malik.


Volume/Issue :
Volume 3
,
Issue 5
(05 - 2017)



Abstract :

Field experiments were conducted at Agricultural Farm, Institute of Agriculture, Visva Bharati, Sriniketan to evaluate herbicides bispyribac-sodium and other herbicide combination in transplanted rice variety ‘MTU 1010’ during 2014. Nine treatments were included in a randomized block design and replicated three times. The treatments consisted of post-emergence application of bispyribac-sodium 10 SC at 20, 25 and 30 g ha-1 at 25 DAT, post-emergence application of cyhalofop butyl 10 EC @ 90 g ha-1 at 15 DAT and follow up spray of 2,4-D 80 AE @ 400 g ha-1 at 30 DAT, post-emergence application of cyhalofop butyl 10 EC at followed by application of metsulfuron methyl + chlorimuron ethyl 20 WP at 4 g ha-1 at 30 DAT, pre emergence application of butachlor 50 EC @ 1500 g ha-1 at 3 DAT followed by post-emergence application of 2,4-D 80 AE @ 400 g ha-1 at 30 DAT, pre emergence application of butachlor 50 EC @ 1500 g ha-1 at 3 DAT followed by post-emergence application of metsulfuron methyl + chlorimuron ethyl 20 WP @ 4 g ha-1 at 30 DAT, hand weeding twice at 20 and 40 DAT and unweeded check. The results revealed that total weed population and dry weight under bispyribac-sodium at 25 g ha-1 were at par with the higher dose of bispyribac-sodium at 30 g ha-1 during the year of study. The weed control efficiency and weed index under bispyribac-sodium at lower dose were also comparable with that of higher dose indicating the sufficiency of bispyribac-sodium at 25 g ha-1 for effective weed management in transplanted rice. The effect of bispyribac-sodium at 25 g ha-1on producing tillers were also at par with that of higher dose. Post-emergence application of bispyribac-sodium at 25 g ha-1 recorded a grain yield of 5176 kg ha-1 which were at par with higher dose of bispyribac-sodium. Higher net income and benefit-cost ratio were also associated with the application of bispyribac-sodium at 25 g ha-1.


No. of Downloads :

13