National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
A field research was carried out during 2015-16 and 2016-17 at Instructional cum Research Farm, Indira Gandhi Krishi Vishwavidyalaya, Raipur. Fifteen treatment combinations (Five tillage and three weed management practices) were tested in split plot design with three replications. Soil dehydrogenase activity was not influenced significantly by different tillage practices alone and in combination of tillage and weed management practices. However, dehydrogenase activity was significantly influenced by weed management practices under rice maize cropping system both the years of study. Dehydrogenage activity was found higher due to application of oxadiargyl 90 g ha-1 PE fb pinoxsulam 22.5 g ha-1PoE over other herbicide combinations in rice. Maximum dehydrogenase activity was recorded under unweeded control. Among the herbicidal treatments; atrazine (1.0 kg ha-1 PE) and halosulfuron (60 g ha-1PoE) herbicides drastically reduced the dehydrogenase activity over unweeded control in maize. There was gradual increase in dehydrogenase activity with the advancement of days after application. The rate of increase was higher after 45 DAS/T under rice maize cropping system. After reaching to harvest stage of rice and maize all the herbicides were degraded and there residues become non toxic to the microbial activities. Maximum HEI recorded under oxadiargyl 90 g ha-1 PE fb pinoxsulam 22.5 g ha-1PoE in rice and atrazine 1.0 kg ha-1 PE in maize.
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