BIO-EFFICACY AND PHYTOTOXICITY OF NEW HERBICIDE MOLECULES FOR EFFECTIVE WEED MANAGEMENT IN DIRECT SEEDED RICE (Oryza sativa L.)
| dc.contributor.advisor | SANJAY, M. T. | |
| dc.contributor.author | RAGHAVENDRA, N. | |
| dc.date.accessioned | 2020-10-08T03:44:16Z | |
| dc.date.available | 2020-10-08T03:44:16Z | |
| dc.date.issued | 2019-08-06 | |
| dc.description.abstract | A field experiment entitled “Bio-efficacy and phytotoxicity of new herbicide molecules for effective weed management in direct seeded rice (Oryza sativa L.)” was conducted at the Main Research Station, University of Agricultural Sciences, Hebbal, Bengaluru, during Kharif 2018. Nine herbicide treatments including four new herbicide molecules (carfentrazone, ethoxysulfuron, penoxsulam + cyhalofop and triafamone + ethoxysulfuron) at 15 DAS, bispyribac sodium at 15 DAS, pyrazosulfuron, oxadiargyl, bensulfuron methyl + pretilachlor, pendimethalin at 3 DAS, passing cycle weeder followed by hand weeding at 20 and 35 DAS and unweeded control were replicated thrice in RCBD. Major weeds observed were Cyperus rotundus, Cynodon dactylon, Dactyloctenium aegyptium, Ageratum conyzoides, Borreria articularis, Commelina benghalensis. Post emergence application of triafamone + ethoxysulfuron 30% WG (RM) 60 g a.i./ha at 15 DAS fb passing cycle weeder and hand weeding at 35 DAS recorded significantly higher rice grain yield, net returns and B:C ratio (5491 kg ha-1 , Rs. 59,240 ha-1 and 2.58, respectively) and was on par with passing cycle weeder followed by hand weeding at 20 and 35 DAS (5618 kg ha-1 , Rs. 57,434 ha-1 and 2.39, respectively) followed by bensulfuron methyl + pretilachlor 6.6% G 660 g a.i./ha within 3 DAS fb passing cycle weeder and hand weeding at 30 DAS (5122 kg ha-1 , Rs. 54163 ha-1 and 2.47, respectively) without any phytotoxicity on direct seeded rice. Unweeded control recorded significantly lower rice grain yield, net returns and B:C ratio (1400 kg ha -1 , Rs.- 1084 ha -1 , 0.96, respectively) and higher weed index (75.08%) compared to other treatments. | en_US |
| dc.identifier.other | Th-12330 | |
| dc.identifier.uri | https://krishikosh.egranth.ac.in/handle/1/5810152796 | |
| dc.keywords | Molecules, Oxadiargyl, Rice,Penoxsulam. | en_US |
| dc.language.iso | English | en_US |
| dc.pages | 168 | en_US |
| dc.publisher | UNIVERSITY OF AGRICULTURAL SCIENCES, GKVK BENGALURU | en_US |
| dc.sub | Agronomy | en_US |
| dc.theme | NEW HERBICIDE MOLECULES FOR EFFECTIVE WEED MANAGEMENT IN DIRECT SEEDED RICE | en_US |
| dc.these.type | M.Sc | en_US |
| dc.title | BIO-EFFICACY AND PHYTOTOXICITY OF NEW HERBICIDE MOLECULES FOR EFFECTIVE WEED MANAGEMENT IN DIRECT SEEDED RICE (Oryza sativa L.) | en_US |
| dc.type | Thesis | en_US |