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Current IssueEditorial BoardOnline First ArticlesArchive

volume 46 issue 1 (march 2012) : 9 - 15

BIO-EFFICACY OF SULFONYLUREA HERBICIDES ON MIXED WEED FLORA IN TRANSPLANTED RICE

A
A.P. Singh1
A
A.K. Singh2
S
Sumit Chaturvedi
S
Shailender Singh
O
O.P. Mishra
1Department of Agronomy, College of Agriculture, G.B. Pant University of Agriculture & Technology, Pantnagar-263 145, India

  • Submitted|

  • First Online |

  • doi

Cite article:- Singh1 A.P., Singh2 A.K., Chaturvedi Sumit, Singh Shailender, Mishra O.P. (2025). BIO-EFFICACY OF SULFONYLUREA HERBICIDES ON MIXED WEED FLORA IN TRANSPLANTED RICE. Indian Journal of Agricultural Research. 46(1): 9 - 15. doi: .

ABSTRACT

A field experiment was conducted during kharif season of 2003 and 2004 to study the bio-efficacy of different rates of sulfonylurea herbicides for the management of mixed weed flora in transplanted rice. In experimental field, Echinochloa colona, E. crusgalli and Paspalum distichum among grasses, Caesulia axillaris among broadleaf weeds and Cyperus spp. among sedges were the dominant weed species which constituted 18.8, 12.4, 11.7, 32.95 and 9.5 per cent, respectively of total weed population under weedy check at 60 days after transplanting. The lowest total weed density (1.40 m-2), dry matter production (1.37 g m-2) and weed control efficiency irrespective of weed species was recorded under two hand weeding followed by metsulfuron methyl at 8.0 g ha-1, metsulfuron methyl + chlorimuron ethyl (ready mixture of metsulfuron methyl and chlorimuron ethyl in 1:1 ratio) at 8.0 g ha-1 and 2,4-D at 500.0 g ha-1 at all the stages of crop growth during both the years. Morpho-physiological crop characteristics viz., number of shoots m-2, crop dry weight (g m-2), leaf area index (LAI) and crop growth rate (g day-1) were found to be lowest in weedy plot and maximum in weed-free plot and there was an increasing trend from 30 days stage upto harvest except number of shoots (m-2) and leaf area index. Among herbicides, metsulfuron methyl at 8.0 g ha-1 and metsulfuron methyl + chlorimuron ethyl at 8.0 g ha-1 recorded highest values for number of shoots m-2, crop dry weight (g m-2), leaf area index (LAI) and crop growth rate (g day-1) in 2003 and 2004, respectively. Weeds caused 30.5 per cent reduction in the grain yield of rice in comparison to weed-free condition. Yield contributing characters like number of panicles, number of grains panicle-1, weight of grains panicle-1, 1000-grain weight, maximum weight of panicle and grain weight plant-1 observed highest under metsulfuron methyl at 8.0 g ha-1 and metsulfuron methyl + chlorimuron ethyl at 8.0 g ha-1 among the herbicides during both the years. Consequently, metsulfuron methyl at 8.0 g ha-1 (53.5 q ha-1) and metsulfuron methyl + chlorimuron ethyl at 8.0 g ha-1 (53.84 q ha-1) not only yielded higher among  herbicides but their effectiveness for suppressing mixed flora of weeds was statistically comparable to weed-free condition (55.15 q ha-1)  and two hand weeding treatment (53.6 q ha-1) during both the years.

REFERENCES

  1. Balaswamy, K. (1999) Effect of urea forms and herbicides on weed composition and density in transplanted rice. J. Res. ANGRAU, 27(3) : 5-11.
  2. Brar, L.S.; Kolar, J.S. and Brar, L.S. (1997) Chemical control of Caesulia axillaris in transplanted rice (Oryza sativa). Indian J. Weed Sci., 42(1) : 82-85.
  3. Chandra, M. (1994) Effect of 2,4-D formulations on transplanted rice and associated weeds. M.Sc. Ag. (Agronomy), Thesis, G.B. Pant University of Agriculture and Technology, Pantnagar. pp. 5, 75-76.
  4. Kathiresan, R.M. (2001) Sustainability of weed management practices in rice-black gram cropping system. In. First Biennial Conference in the New Millennium as Eco-friendly Weed Management Options for Sustainable Agriculture. University of Agricultural Sciences, Bangalore. 79p.
  5. Mandal, S. (1995) Efficacy of sulfonylurea herbicides alone and in combination with anilofos in transplanted rice. M.Sc.Ag. (Agronomy), Thesis, G.B. Pant University of Agriculture and Technology, Pantnagar. pp. 89-95.
  6. Mishra, R.K.; Dwivedi, R.K. and Tiwari, K.L. (1992) Efficiency of herbicides in direct seeded rice. Indian J. Weed Sci., 24 : 91-93.
  7. Reddy, R.K.L. (1988) Weed control studies in rice. Thesis, M.Sc. Ag. (Agronomy), G.B. Pant University of Agriculture and Technology, Pantnagar, pp. 40-52.
  8. Sarkar, N.C. (2001) Studies on chemical weed control in transplanted rice (Oryza sativa L.). M.Sc.Ag. (Agronomy), Thesis, G.B. Pant University of Agriculture and Technology, Pantnagar. pp. 108-112.
  9. Singh, V.P. and Singh, G. (2001) Weed control studies in spring rice (Oryza sativa L.) under rainfed low land situation of Uttaranchal. Indian J. Weed. Sci., 33(1 & 2) : 52-55.
  10. Walia, U.S.; Brar, L.S. and Dhaliwal, B.K. (1999) Studies on the control of Caesulia axillaris Roxb. in transplanted rice (Oryza sativa L.). Indian J. Weed Sci., 31(3&4) : 158-160.
  11. Yoshida, S. (1981) Fundamental of Rice Crop Science. The International Rice Research Institute, Los Banos, Laguna, Philippines. 269 p.
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    volume 46 issue 1 (march 2012) : 9 - 15

    BIO-EFFICACY OF SULFONYLUREA HERBICIDES ON MIXED WEED FLORA IN TRANSPLANTED RICE

    A
    A.P. Singh1
    A
    A.K. Singh2
    S
    Sumit Chaturvedi
    S
    Shailender Singh
    O
    O.P. Mishra
    1Department of Agronomy, College of Agriculture, G.B. Pant University of Agriculture & Technology, Pantnagar-263 145, India

    • Submitted|

    • First Online |

    • doi

    Cite article:- Singh1 A.P., Singh2 A.K., Chaturvedi Sumit, Singh Shailender, Mishra O.P. (2025). BIO-EFFICACY OF SULFONYLUREA HERBICIDES ON MIXED WEED FLORA IN TRANSPLANTED RICE. Indian Journal of Agricultural Research. 46(1): 9 - 15. doi: .

    ABSTRACT

    A field experiment was conducted during kharif season of 2003 and 2004 to study the bio-efficacy of different rates of sulfonylurea herbicides for the management of mixed weed flora in transplanted rice. In experimental field, Echinochloa colona, E. crusgalli and Paspalum distichum among grasses, Caesulia axillaris among broadleaf weeds and Cyperus spp. among sedges were the dominant weed species which constituted 18.8, 12.4, 11.7, 32.95 and 9.5 per cent, respectively of total weed population under weedy check at 60 days after transplanting. The lowest total weed density (1.40 m-2), dry matter production (1.37 g m-2) and weed control efficiency irrespective of weed species was recorded under two hand weeding followed by metsulfuron methyl at 8.0 g ha-1, metsulfuron methyl + chlorimuron ethyl (ready mixture of metsulfuron methyl and chlorimuron ethyl in 1:1 ratio) at 8.0 g ha-1 and 2,4-D at 500.0 g ha-1 at all the stages of crop growth during both the years. Morpho-physiological crop characteristics viz., number of shoots m-2, crop dry weight (g m-2), leaf area index (LAI) and crop growth rate (g day-1) were found to be lowest in weedy plot and maximum in weed-free plot and there was an increasing trend from 30 days stage upto harvest except number of shoots (m-2) and leaf area index. Among herbicides, metsulfuron methyl at 8.0 g ha-1 and metsulfuron methyl + chlorimuron ethyl at 8.0 g ha-1 recorded highest values for number of shoots m-2, crop dry weight (g m-2), leaf area index (LAI) and crop growth rate (g day-1) in 2003 and 2004, respectively. Weeds caused 30.5 per cent reduction in the grain yield of rice in comparison to weed-free condition. Yield contributing characters like number of panicles, number of grains panicle-1, weight of grains panicle-1, 1000-grain weight, maximum weight of panicle and grain weight plant-1 observed highest under metsulfuron methyl at 8.0 g ha-1 and metsulfuron methyl + chlorimuron ethyl at 8.0 g ha-1 among the herbicides during both the years. Consequently, metsulfuron methyl at 8.0 g ha-1 (53.5 q ha-1) and metsulfuron methyl + chlorimuron ethyl at 8.0 g ha-1 (53.84 q ha-1) not only yielded higher among  herbicides but their effectiveness for suppressing mixed flora of weeds was statistically comparable to weed-free condition (55.15 q ha-1)  and two hand weeding treatment (53.6 q ha-1) during both the years.

    REFERENCES

    1. Balaswamy, K. (1999) Effect of urea forms and herbicides on weed composition and density in transplanted rice. J. Res. ANGRAU, 27(3) : 5-11.
    2. Brar, L.S.; Kolar, J.S. and Brar, L.S. (1997) Chemical control of Caesulia axillaris in transplanted rice (Oryza sativa). Indian J. Weed Sci., 42(1) : 82-85.
    3. Chandra, M. (1994) Effect of 2,4-D formulations on transplanted rice and associated weeds. M.Sc. Ag. (Agronomy), Thesis, G.B. Pant University of Agriculture and Technology, Pantnagar. pp. 5, 75-76.
    4. Kathiresan, R.M. (2001) Sustainability of weed management practices in rice-black gram cropping system. In. First Biennial Conference in the New Millennium as Eco-friendly Weed Management Options for Sustainable Agriculture. University of Agricultural Sciences, Bangalore. 79p.
    5. Mandal, S. (1995) Efficacy of sulfonylurea herbicides alone and in combination with anilofos in transplanted rice. M.Sc.Ag. (Agronomy), Thesis, G.B. Pant University of Agriculture and Technology, Pantnagar. pp. 89-95.
    6. Mishra, R.K.; Dwivedi, R.K. and Tiwari, K.L. (1992) Efficiency of herbicides in direct seeded rice. Indian J. Weed Sci., 24 : 91-93.
    7. Reddy, R.K.L. (1988) Weed control studies in rice. Thesis, M.Sc. Ag. (Agronomy), G.B. Pant University of Agriculture and Technology, Pantnagar, pp. 40-52.
    8. Sarkar, N.C. (2001) Studies on chemical weed control in transplanted rice (Oryza sativa L.). M.Sc.Ag. (Agronomy), Thesis, G.B. Pant University of Agriculture and Technology, Pantnagar. pp. 108-112.
    9. Singh, V.P. and Singh, G. (2001) Weed control studies in spring rice (Oryza sativa L.) under rainfed low land situation of Uttaranchal. Indian J. Weed. Sci., 33(1 & 2) : 52-55.
    10. Walia, U.S.; Brar, L.S. and Dhaliwal, B.K. (1999) Studies on the control of Caesulia axillaris Roxb. in transplanted rice (Oryza sativa L.). Indian J. Weed Sci., 31(3&4) : 158-160.
    11. Yoshida, S. (1981) Fundamental of Rice Crop Science. The International Rice Research Institute, Los Banos, Laguna, Philippines. 269 p.
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