Bio-efficacy of sequential herbicide application for weed management in dry direct seeded rice
Weeds are the major biotic constraint in dry-direct seeded rice (DDSR), mainly due to the concurrent emergence and absence of water layer to suppress weeds. Therefore, strategy needs to be developed to get broad-spectrum weed control in DDSR. Experiments were conducted in rice (var. MTU 1010) durin...
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| Format: | Article |
| Language: | English |
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Indian Council of Agricultural Research
2021-03-01
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| Series: | The Indian Journal of Agricultural Sciences |
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| Online Access: | https://epubs.icar.org.in/index.php/IJAgS/article/view/110930 |
| _version_ | 1828034041664765952 |
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| author | V K CHOUDHARY ANIL DIXIT |
| author_facet | V K CHOUDHARY ANIL DIXIT |
| author_sort | V K CHOUDHARY |
| collection | DOAJ |
| description |
Weeds are the major biotic constraint in dry-direct seeded rice (DDSR), mainly due to the concurrent emergence and absence of water layer to suppress weeds. Therefore, strategy needs to be developed to get broad-spectrum weed control in DDSR. Experiments were conducted in rice (var. MTU 1010) during 2015-16 where sequential applications of pre- and post-emergence herbicides were evaluated for providing broad-spectrum weed management options in DDSR. Both the years, employing two-hand weedings at 15 and 30 DAS provided the lowest weed densities and weed dry weight at 75 DAS, whereas the maximum values of weeds were recorded in un-weeded plots. Among the herbicide-based weed management practices, application of pendimethalin 1000 g/ha fb bispyribac sodium 25 g/ha fb fenoxaprop 60 g/ha + chlorimuron + metsulfuron 4 g/ha at 30 DAS provided excellent weed control at 75 DAS, with 4.3% higher rice grain yield than two hand weedings at 15 and 30 DAS, pendimethalin 1000 g/ha fb bispyribac sodium 25 g/ha also provided good weed control and higher grain yield. Un-weeded plots noticed with considerable yield reduction of 79.5-83.3% over two hand weedings. Therefore, sequential application of pendimethalin 1000 g/ ha fb bispyribac sodium 25 g/ha is recommended along with need-based application of post-emergence herbicides (fenoxaprop 60 g/ha + chlorimuron + metsulfuron 4 g/ha) or one hand weeding to improve the weed control efficiency and provides economically higher productivity in DDSR.
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| first_indexed | 2024-04-10T15:26:59Z |
| format | Article |
| id | doaj.art-7a8cdf71129c460d98af04ef24d0256b |
| institution | Directory Open Access Journal |
| issn | 0019-5022 2394-3319 |
| language | English |
| last_indexed | 2024-04-10T15:26:59Z |
| publishDate | 2021-03-01 |
| publisher | Indian Council of Agricultural Research |
| record_format | Article |
| series | The Indian Journal of Agricultural Sciences |
| spelling | doaj.art-7a8cdf71129c460d98af04ef24d0256b2023-02-14T08:12:46ZengIndian Council of Agricultural ResearchThe Indian Journal of Agricultural Sciences0019-50222394-33192021-03-0191110.56093/ijas.v91i1.110930Bio-efficacy of sequential herbicide application for weed management in dry direct seeded riceV K CHOUDHARY0ANIL DIXIT1ICAR-National Institute of Biotic Stress Management, Raipur, Chhattisgarh 493 225, IndiaICAR-National Institute of Biotic Stress Management, Raipur, Chhattisgarh 493 225, India Weeds are the major biotic constraint in dry-direct seeded rice (DDSR), mainly due to the concurrent emergence and absence of water layer to suppress weeds. Therefore, strategy needs to be developed to get broad-spectrum weed control in DDSR. Experiments were conducted in rice (var. MTU 1010) during 2015-16 where sequential applications of pre- and post-emergence herbicides were evaluated for providing broad-spectrum weed management options in DDSR. Both the years, employing two-hand weedings at 15 and 30 DAS provided the lowest weed densities and weed dry weight at 75 DAS, whereas the maximum values of weeds were recorded in un-weeded plots. Among the herbicide-based weed management practices, application of pendimethalin 1000 g/ha fb bispyribac sodium 25 g/ha fb fenoxaprop 60 g/ha + chlorimuron + metsulfuron 4 g/ha at 30 DAS provided excellent weed control at 75 DAS, with 4.3% higher rice grain yield than two hand weedings at 15 and 30 DAS, pendimethalin 1000 g/ha fb bispyribac sodium 25 g/ha also provided good weed control and higher grain yield. Un-weeded plots noticed with considerable yield reduction of 79.5-83.3% over two hand weedings. Therefore, sequential application of pendimethalin 1000 g/ ha fb bispyribac sodium 25 g/ha is recommended along with need-based application of post-emergence herbicides (fenoxaprop 60 g/ha + chlorimuron + metsulfuron 4 g/ha) or one hand weeding to improve the weed control efficiency and provides economically higher productivity in DDSR. https://epubs.icar.org.in/index.php/IJAgS/article/view/110930Benefit-cost ratioDry direct-seeded ricePre- and post-emergence herbicidesWeed management |
| spellingShingle | V K CHOUDHARY ANIL DIXIT Bio-efficacy of sequential herbicide application for weed management in dry direct seeded rice The Indian Journal of Agricultural Sciences Benefit-cost ratio Dry direct-seeded rice Pre- and post-emergence herbicides Weed management |
| title | Bio-efficacy of sequential herbicide application for weed management in dry direct seeded rice |
| title_full | Bio-efficacy of sequential herbicide application for weed management in dry direct seeded rice |
| title_fullStr | Bio-efficacy of sequential herbicide application for weed management in dry direct seeded rice |
| title_full_unstemmed | Bio-efficacy of sequential herbicide application for weed management in dry direct seeded rice |
| title_short | Bio-efficacy of sequential herbicide application for weed management in dry direct seeded rice |
| title_sort | bio efficacy of sequential herbicide application for weed management in dry direct seeded rice |
| topic | Benefit-cost ratio Dry direct-seeded rice Pre- and post-emergence herbicides Weed management |
| url | https://epubs.icar.org.in/index.php/IJAgS/article/view/110930 |
| work_keys_str_mv | AT vkchoudhary bioefficacyofsequentialherbicideapplicationforweedmanagementindrydirectseededrice AT anildixit bioefficacyofsequentialherbicideapplicationforweedmanagementindrydirectseededrice |