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 experiment was carried out during kharif 2014 and 2015 at experimental farm of Department of Agronomy, CSK HPKV, Palampur (HP) to evaluate the effect of post emergence herbicide –Tembotrione on yield, soil dehydrogenase activity and its phytotoxicity on maize (Zea mays L.) in silty clay loam soil under mid hill conditions of Himachal Pradesh. The experiment was laid out in Randomized Block Design with sixteen treatments replicated thrice. The treatments were three doses of tembotrione (110, 120 and 130 g/ha) with and without surfactant (1000 and 0 ml/ha) at 2 and 3 weeks after sowing and 4 checks [farmer’s practice, atrazine 1.5 kg/ha; weed free (atrazine fb 2-4, D fb hand-weeding if required) and weedy check]. Application of tembotrione 130 g/ha with surfactant at 14 and 21 DAS was comparable to weed free in increasing the grain yield during both the years. Soil dehydrogenase activity in herbicide treated treatments was significantly reduced up to 60 DAS in comparison to later stages. However, the soil dehydrogenase activity was recovered due to degradation of herbicide afterwards. The herbicide was not having any phytotoxic effect on the crop.
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