Omprakash Sahu and A.K. Sinha*
RMD Collage of Agriculture and Research Station, Indira Gandhi Krishi Vishwavidyalaya
Ambikapur, Surguja- 497001 (Chhattisgargh)
Email: amitksinha11@gmail.com
Received-09.08.2020, Revised-28.08.2020
Abstract: A field experiment on “performance of new herbicide molecules for weed management in maize” was conducted on the RMD College of Agriculture & Research Station, Ambikapur, during the kharif season of 2019-20. Soil of the experimental field was sandy loam in texture. Nine treatments herbicidal combination of weed management practices were study in randomized block design and 3 times replicated under rainy season. weed control treatments atrazine 1000 g ha-1 (P.E.) fb topramezone 25.2 g ha-1 at 25 DAS was preformed mostly higher than all the other herbicidal treatments for growth, yield attributes viz., cob length, cob girth, number of kernel rows cob-1, number of kernels row-1, 100 kernel weight and kernel yield (5954.00 kg ha-1) and also found lower weed density, lower weed dry weight and effective for complex weed flora. which was found statistically at par with atrazine 1000 g ha-1 (P.E.) fb tembotrione 120 g ha-1 at 25 DAS and atrazine 750 g ha-1(P.E.) fb topramezone 25.2 g ha-1 at 25 DAS. At 60 DAS, lower weed index and higher weed control efficiency recorded with atrazine 1000 g ha-1 (P.E.) fb topramezone 25.2 g ha-1 at 25 DAS. Although weed free check is most effective treatment as compare to herbicidal combinations.Highest net returns and B:C ratio was recorded in atrazine 1000 g ha-1 (P.E.) fb topramezone 25.2 g ha-1 at 25 DAS (` 66082.62 ha-1 and 1.49) followed by higher net return under atrazine 1000 g ha-1 fb tembotrione 120 g ha-1 at 25 DAS (` 62573.43 ha-1), atrazine 750 g ha-1 fb topramezone 25.2 g ha-1 at 25 DAS (` 62506.87 ha-1) and higher B:C ratio atrazine 750 g ha-1 fb topramezone 25.2 g ha-1 at 25 DAS (1.42) and atrazine 1000 g ha-1 fb tembotrione 120 g ha-1 at 25 DAS (1.39).
Keywords: Maize, Weed management, herbicide Combinations
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