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volume 46 issue 1 (march 2012) : 80 - 83

AGRONOMIC MANAGEMENT FOR BT COTTON UNDER RAINFED CONDITIONS

M
M. Sree Rekha
T
T. Pradeep1
1Acharya N.G. Ranga Agricultural University, Agricultural Research Station, Adilabad - 504 002, India

  • Submitted|

  • First Online |

  • doi

Cite article:- Rekha Sree M., Pradeep1 T. (2025). AGRONOMIC MANAGEMENT FOR BT COTTON UNDER RAINFED CONDITIONS. Indian Journal of Agricultural Research. 46(1): 80 - 83. doi: .

ABSTRACT

A field trial was conducted for three seasons from 2006-07 to 2008-09 with an objective to find out the response of hybrid Bt Bunny to three different nitrogen levels (120, 150 and 180 kg ha-1) and scheduling of nitrogen in five equal splits at 25 days interval viz., 15-40-65-90-115 days after sowing (DAS),20-45-70-95-100 DAS and 25-50-75-100-125 DAS under rainfed conditions at  Scheduling of nitrogen from 20 or 25 days after sowing gave significantly higher seed cotton yield (3592 kg ha-1 and 3630 kg ha-1) than scheduling nitrogen from 15 DAS with seed cotton yield of 3138 kg ha-1. The other parameters like number of monopodia and sympodia per plant, boll number and boll weight were not influenced by nitrogen scheduling. Nitrogen application at different levels did not influence the seed cotton yield, number of monopodia and sympodia per plant , boll number and boll weight. However, the seed cotton yield ranged from 3300 kg ha-1 to 3600 kg ha-1 indicating the potentiality of the hybrid Bt Bunny. No significant interaction among the different variables for any treatment combination was observed. However, the net returns and BC ratio were highest for nitrogen at 180 kg ha-1 and scheduling from25 DAS.

REFERENCES

  1. Mohan Das ,D and Govind Reddy, M. (2009). Influence of level and frequency of nitrogen application on nutrient uptake, yield and economics of Bt cotton hybrids. J Rese, ANGRAU 37(1& 2):50-52.
  2. Mohan Das,D. Govind Reddy,M. and Pradeep T. (2009). Effect of nitrogen levels and schedule on yield attributes and quality of Bt cotton hybrids. Andhra Agri J 56(3):271-274.
  3. Munirathnam,P. and Sangita ,M. Sawadhkar. (2008). Studies on the effect of fertilizers and bio-inoculants on yield and quality of fibre in cotton. J Cotton Rese Develop 22(1):62-65.
  4. Narayana,E. Hema, K. Srinivasulu,K. Prasad,N.V.V.S.D and Rao,N.H.P.(2008) Performance of Bt cotton hybrid (NCS-145) to varied spacing and fertilizer levels in Vertisol under rainfed conditions. J Indian Soc Cotton Improv 33(1) 33-36.
  5. Panse ,V.G. and Sukhatme, P.V.(1967) Statistical Methods for Agricultural Workers. 2nd edition, ICAR, New Delhi.
  6. Reddy, P. R. R. and Gopinath, M.(2008.) Influence of fertilizers and plant geometry on performance of Bt cotton hybrid- J Cotton Res Develop 22(1):78-80.
  7. Sunitha,V. Chandrasekhar, K. and Veeraraghavaiah,R. (2010).Performance of Bt cotton hybrids at different nitrogen levels. J Cotton Res Develop 24(1): 52-55.
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Indian Journal of Agricultural Research
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    volume 46 issue 1 (march 2012) : 80 - 83

    AGRONOMIC MANAGEMENT FOR BT COTTON UNDER RAINFED CONDITIONS

    M
    M. Sree Rekha
    T
    T. Pradeep1
    1Acharya N.G. Ranga Agricultural University, Agricultural Research Station, Adilabad - 504 002, India

    • Submitted|

    • First Online |

    • doi

    Cite article:- Rekha Sree M., Pradeep1 T. (2025). AGRONOMIC MANAGEMENT FOR BT COTTON UNDER RAINFED CONDITIONS. Indian Journal of Agricultural Research. 46(1): 80 - 83. doi: .

    ABSTRACT

    A field trial was conducted for three seasons from 2006-07 to 2008-09 with an objective to find out the response of hybrid Bt Bunny to three different nitrogen levels (120, 150 and 180 kg ha-1) and scheduling of nitrogen in five equal splits at 25 days interval viz., 15-40-65-90-115 days after sowing (DAS),20-45-70-95-100 DAS and 25-50-75-100-125 DAS under rainfed conditions at  Scheduling of nitrogen from 20 or 25 days after sowing gave significantly higher seed cotton yield (3592 kg ha-1 and 3630 kg ha-1) than scheduling nitrogen from 15 DAS with seed cotton yield of 3138 kg ha-1. The other parameters like number of monopodia and sympodia per plant, boll number and boll weight were not influenced by nitrogen scheduling. Nitrogen application at different levels did not influence the seed cotton yield, number of monopodia and sympodia per plant , boll number and boll weight. However, the seed cotton yield ranged from 3300 kg ha-1 to 3600 kg ha-1 indicating the potentiality of the hybrid Bt Bunny. No significant interaction among the different variables for any treatment combination was observed. However, the net returns and BC ratio were highest for nitrogen at 180 kg ha-1 and scheduling from25 DAS.

    REFERENCES

    1. Mohan Das ,D and Govind Reddy, M. (2009). Influence of level and frequency of nitrogen application on nutrient uptake, yield and economics of Bt cotton hybrids. J Rese, ANGRAU 37(1& 2):50-52.
    2. Mohan Das,D. Govind Reddy,M. and Pradeep T. (2009). Effect of nitrogen levels and schedule on yield attributes and quality of Bt cotton hybrids. Andhra Agri J 56(3):271-274.
    3. Munirathnam,P. and Sangita ,M. Sawadhkar. (2008). Studies on the effect of fertilizers and bio-inoculants on yield and quality of fibre in cotton. J Cotton Rese Develop 22(1):62-65.
    4. Narayana,E. Hema, K. Srinivasulu,K. Prasad,N.V.V.S.D and Rao,N.H.P.(2008) Performance of Bt cotton hybrid (NCS-145) to varied spacing and fertilizer levels in Vertisol under rainfed conditions. J Indian Soc Cotton Improv 33(1) 33-36.
    5. Panse ,V.G. and Sukhatme, P.V.(1967) Statistical Methods for Agricultural Workers. 2nd edition, ICAR, New Delhi.
    6. Reddy, P. R. R. and Gopinath, M.(2008.) Influence of fertilizers and plant geometry on performance of Bt cotton hybrid- J Cotton Res Develop 22(1):78-80.
    7. Sunitha,V. Chandrasekhar, K. and Veeraraghavaiah,R. (2010).Performance of Bt cotton hybrids at different nitrogen levels. J Cotton Res Develop 24(1): 52-55.
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