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Current IssueEditorial BoardOnline First ArticlesArchive

volume 34 issue 2 (june 2014) : 137-140,   Doi: 10.5958/0976-0547.2014.00033.0

PHENOLOGY, THERMAL INDICES AND YIELD OF EARLY RICE HYBRIDS IN RED AND LATERITE ZONE OF WEST BENGAL, INDIA

M
Mrityunjay Ghosh
1Department of Agronomy, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, 741 252, India
Cite article:- Ghosh Mrityunjay (2025). PHENOLOGY, THERMAL INDICES AND YIELD OF EARLY RICE HYBRIDS IN RED AND LATERITE ZONE OF WEST BENGAL, INDIA. Agricultural Science Digest. 34(2): 137-140. doi: 10.5958/0976-0547.2014.00033.0.

ABSTRACT

A field experiment was conducted to evaluate the performance of fifteen early rice hybrids along with checks in a randomized block design with 3 replications during wet (kharif) season. Mean number of days from sowing to emergence, 4th leaf emergence, flowering and maturity were 3.49, 17.18, 76.69 and 105.49 days, respectively; while mean cultivar growing degree days (GDD) for those stages were 61.42, 329.31, 1400.55 and 1867.030C. Average values with variations for yield associated characters were noted for panicle length (23.11±4.75 cm), number of panicles m-2 (322.87±33.00), filled grains panicle-1 (54.56±18.55), grain filling (82.26±6.35%) and 1,000-grain weight (29.35±4.55 g). The private-bred short duration hybrid AG 8 yielded highest (5.01 t ha-1) due to significant improvement in number of panicles (341 m-2) and 1,000-grain weight (31.3 g). Filled grains panicle-1 showed positive correlation (r= 0.491**) with panicle length, but negative association (r=-0.426**) with test weight. Based on plant characters and yield of 15 early rice hybrids, AG 8 (duration 103.7 days, plant height 103.5 cm, grain yield 5.01 t ha-1 and nearly no-lodging) appeared promising for cultivation in Red and Laterite Zone of West Bengal.

REFERENCES

  1. Anonymous (2010). Advanced technology for hybrid rice cultivation (in Bengali). Department of Agriculture, Government of West Bengal, Kolkata, West Bengal, India.
  2. I.R.R.I. (1996). Standard evaluation system for rice. International Rice Research Institute, Los Banos, Laguna, Philippines.
  3. Mandal, N. and Ghosh, M. (2003). Thermal time indices and correlations for hybrid rice in Terai zone of West Bengal. Journal of Agrometeorology, 5(2): 98-101.
  4. Nuttonson, M. Y. (1948). Some preliminary observations of phonological data as a tool in the study of photoperiod and thermal requirements of various plant materials. In: A. E. Murneek, and R. P. Whyte (eds.) A Symposium on Vernalization and Photoperiodism. Chronica Botanica Publishing Co. Walthani, M. A., USA
  5. Nuttonson, M. Y. (1955). Wheat climatic relationships and use of phenology in ascertaining the thermal and photothermal requirement of wheat. Am. Inst. Crop Ecol. Washington D.C.
  6. Poonam, A. and Swain, P. (2008). Physiological efficiency of rice hybrids under irrigated condition of Odhisa. Oryza, 45(3): 247-249.
  7. Swain, B. and Reddy, J.N. (2006). Correlation and path analysis of yield and its components in rainfed lowland rice genotypes under normal and delayed planting conditions. Oryza, 43(1): 58-61.
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    volume 34 issue 2 (june 2014) : 137-140,   Doi: 10.5958/0976-0547.2014.00033.0

    PHENOLOGY, THERMAL INDICES AND YIELD OF EARLY RICE HYBRIDS IN RED AND LATERITE ZONE OF WEST BENGAL, INDIA

    M
    Mrityunjay Ghosh
    1Department of Agronomy, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, 741 252, India
    Cite article:- Ghosh Mrityunjay (2025). PHENOLOGY, THERMAL INDICES AND YIELD OF EARLY RICE HYBRIDS IN RED AND LATERITE ZONE OF WEST BENGAL, INDIA. Agricultural Science Digest. 34(2): 137-140. doi: 10.5958/0976-0547.2014.00033.0.

    ABSTRACT

    A field experiment was conducted to evaluate the performance of fifteen early rice hybrids along with checks in a randomized block design with 3 replications during wet (kharif) season. Mean number of days from sowing to emergence, 4th leaf emergence, flowering and maturity were 3.49, 17.18, 76.69 and 105.49 days, respectively; while mean cultivar growing degree days (GDD) for those stages were 61.42, 329.31, 1400.55 and 1867.030C. Average values with variations for yield associated characters were noted for panicle length (23.11±4.75 cm), number of panicles m-2 (322.87±33.00), filled grains panicle-1 (54.56±18.55), grain filling (82.26±6.35%) and 1,000-grain weight (29.35±4.55 g). The private-bred short duration hybrid AG 8 yielded highest (5.01 t ha-1) due to significant improvement in number of panicles (341 m-2) and 1,000-grain weight (31.3 g). Filled grains panicle-1 showed positive correlation (r= 0.491**) with panicle length, but negative association (r=-0.426**) with test weight. Based on plant characters and yield of 15 early rice hybrids, AG 8 (duration 103.7 days, plant height 103.5 cm, grain yield 5.01 t ha-1 and nearly no-lodging) appeared promising for cultivation in Red and Laterite Zone of West Bengal.

    REFERENCES

    1. Anonymous (2010). Advanced technology for hybrid rice cultivation (in Bengali). Department of Agriculture, Government of West Bengal, Kolkata, West Bengal, India.
    2. I.R.R.I. (1996). Standard evaluation system for rice. International Rice Research Institute, Los Banos, Laguna, Philippines.
    3. Mandal, N. and Ghosh, M. (2003). Thermal time indices and correlations for hybrid rice in Terai zone of West Bengal. Journal of Agrometeorology, 5(2): 98-101.
    4. Nuttonson, M. Y. (1948). Some preliminary observations of phonological data as a tool in the study of photoperiod and thermal requirements of various plant materials. In: A. E. Murneek, and R. P. Whyte (eds.) A Symposium on Vernalization and Photoperiodism. Chronica Botanica Publishing Co. Walthani, M. A., USA
    5. Nuttonson, M. Y. (1955). Wheat climatic relationships and use of phenology in ascertaining the thermal and photothermal requirement of wheat. Am. Inst. Crop Ecol. Washington D.C.
    6. Poonam, A. and Swain, P. (2008). Physiological efficiency of rice hybrids under irrigated condition of Odhisa. Oryza, 45(3): 247-249.
    7. Swain, B. and Reddy, J.N. (2006). Correlation and path analysis of yield and its components in rainfed lowland rice genotypes under normal and delayed planting conditions. Oryza, 43(1): 58-61.
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