| Volume |
Issue |
Year |
Page No |
Type |
PDF Download |
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50
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2
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2018
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108
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111
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Research article
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Amelioration of herbicide stress with plant growth regulators and nutrients in transplanted rice
S. Mohapatra, S.K.Tripathy and B.R Nayak
DOI :
http://dx.doi.org/10.5958/0974-8164.2018.00027.8
Email :
sanjukta.mohapatra34@gmail.com
Address :
Regional Research and Technology Transfer Station, Orissa University of Agriculture and Technology, Chiplima, Sambalpur, Odisha 768 025
Keywords
Brassinolide
Gibberellic acid
Herbicide toxicity
Transplanted rice
Yield
Abstract
Foliar application of two plant growth regulators (PGR)-brassinolide at 0.5 ppm, gibberellic acid at 10 ppm and one complex fertilizer NPK 19:19:19 at 1% concentration were tested alone as well as in combination with control (double dose of fenoxaprop-ethyl) and absolute control (normal dose of fenoxaprop-ethyl) against herbicide stress to rice during Kharif 2015 and 2016. The treatments were given 5 days after application of fenoxaprop-ethyl as foliar spray. Among the PGRs and nutrients, tank mix application of brassinolide at 0.5 ppm + NPK 19:19:19 at 1% recorded the lowest incidence of phytotoxicity (1.2) at 30 days after application and gave the highest grain yield (6.12 t/ha), net returns (` 49,431/ha) and benefit : cost ratio (1.32). Grain yield was more (5.92 to 6.12 t/ha) in brassinolide treated plot than that of gibberellic acid (5.81 to 5.83 t/ha) indicating more effectiveness of brassinolide than gibberellic acid in mitigating herbicide stress. Use of plant growth regulator and nutrient prevented 25.9% yield loss due to herbicide stress in rice.