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Influence of dosage, storage time and temperature on efficacy of metalaxyl-treated seed for the control of pearl millet downy mildew

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Abstract

Metalaxyl (Apron 35WS) as a seed treatment has been used extensively to control downy mildew (caused by Sclerospora graminicola) in pearl millet in India. However, the extent of disease control has varied across cultivars, years and locations. We investigated the effects of fungicide dosage, storage time and storage temperature of metalaxyl-treated seed on disease incidence in four pearl millet lines having varying levels of resistance. A linear relationship was found between fungicide dosage (0.5, 1.5 and 2 g a.i. kg−1 seed) and reduction in disease incidence up to 40 days after emergence in all the lines. The normal fungicide dose (2 g a.i. kg−1 seed) protected the crop for up to 20, 40 and 50 days after emergence in highly susceptible (7042S), moderately susceptible (4042R), and moderately resistant (ICMP 451) lines, respectively. However, the quarter and half the normal dosage of fungicide provided protection only up to 20 days after emergence in 7042R and 40 days after emergence in ICMP 451. Storage duration of metalaxyl-treated seed (2 g a.i. kg−1) up to 9 months at 25 ± 2°C did not affect fungicide efficacy. Storage temperatures (5, 25 and 40°C) and duration (30, 60 and 90 days) of metalaxyl-treated seed (2 g a.i. kg−1) showed differential effects in two pearl millet lines 7042S and 843B with downy mildew incidence being significantly lower in 7042S than in 843B. Metalaxyl-treated seed of 7042S and 843B stored at 40°C for different durations showed phytotoxic effects and it was more pronounced in 843B stored for 60 and 90 days where seed germination was inhibited in pot soil.

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References

  • CIBA-GEIGY (1989). Technical Product Information-3.

  • Gisi, U., & Sierotzki, H. (2008). Fungicide modes of action and resistance in downy mildews. European Journal of Plant Pathology, 122, 157–167.

    Article  CAS  Google Scholar 

  • Hash, C. T., Singh, S. D., Thakur, R. P., & Talukdar, B. S. (1999). Breeding for disease resistance. In I. S. Khairwal, K. N. Rai, D. J. Andrews, & G. Harinarayana (Eds.), Pearl millet breeding (pp. 337–379). New Delhi: Oxford & IBH.

    Google Scholar 

  • Hash, C. T., & Witcombe, J. R. (2002). Gene management and breeding for downy mildew resistance. In J. E. Leslie (Ed.), Sorghum and millets diseases (pp. 27–36). Ames: Iowa State Press.

    Google Scholar 

  • Hess, D. E., Thakur, R. P., Hash, C. T., Sérémé, P., & Magill, C. W. (2002). Pearl millet downy mildew: Problems and control strategies for a new millennium. In J. E. Leslie (Ed.), Sorghum and millets diseases (pp. 37–42). Ames: Iowa State Press.

    Google Scholar 

  • Hospital, F., Chevalet, C., & Mulsant, P. (1992). Using markers in gene introgression breeding programs. Genetics, 132, 1199–1210.

    CAS  PubMed  Google Scholar 

  • Khairwal, I. S., Rai, K. N., Yadav, O. P., & Bhatnagar, S. K. (2004). Pearl millet cultivars. All India Coordinated Pearl Millet Improvement Project, Indian Council of Agricultural Research, Mandor, Jodhpur, India, 22p.

  • Rai, K. N., Kulkarni, V. N., Thakur, R. P., Houssmann, B. I. G., & Mgonja, M. A. (2006). Pearl millet hybrid parents research: approaches and achievements. In C. L. L. Gowda, K. N. Rai, Belum V. S. Reddy, & K. B. Saxena (Eds.), Hybrid parents research at ICRISAT (pp. 11–73). Patancheru, India: International Crops Research Institute for the Semi-Arid Tropics.

  • Rao, V. P., Kadwani, D. L., Sharma, Y. K., Sharma, R., & Thakur, R. P. (2007). Prevalence of pearl millet downy mildew, Sclerospora graminicola in Gujarat and pathogenic characterization of its isolates. Indian Journal of Plant Protection, 35, 291–295.

    Google Scholar 

  • Singh, S. D. (1995). Downy mildew of pearl millet. Plant Disease, 79, 545–550.

    Article  Google Scholar 

  • Singh, S. D., & Shetty, H. S. (1990). Efficacy of systemic fungicide metalaxyl for the control of downy mildew (Sclerospora graminicola)of pearl millet (Pennisetum glaucum). Indian Journal of Agricultural Sciences, 60, 575–581.

    Google Scholar 

  • Singh, S. D., Gopinath, R., Luther, K. D. M., Reddy, P. M., & Pawar, M. N. (1984). Systemic remissive property of metalaxyl against downy mildew in pearl millet. Plant Disease, 68, 668–670.

    CAS  Google Scholar 

  • Singh, S. D., King, S. B., & Werder, J. (1993). Downy mildew disease of pearl millet. Information Bulletin no. 37. Patancheru, India: International Crops Research Institute for the Semi-Arid Tropics.

  • Talukdar, B. S., Khairwal, I. S., & Singh, R. (1999). Hybrid breeding. In I. S. Khairwal, K. N. Rai, D. J. Andrews, & G. Harinarayana (Eds.), Pearl millet breeding (pp. 269–301). New Delhi: Oxford & IBH.

    Google Scholar 

  • Thakur, R. P. (1998). Disease management in pearl millet. In T. S. Thind (Ed.), Diseases of field crops and their management (pp. 53–76). Ludhiana: National Agricultural Technology Information Center.

    Google Scholar 

  • Thakur, R. P. (2008). Pearl millet. In S. Lodha, R. Mawar, & B. S. Rathore (Eds.), Disease management in Arid land Crops (pp. 21–41). Jodhpur: Scientific Publishers.

    Google Scholar 

  • Thakur, R. P., Rao, V. P., Amrutesh, K. N., Shetty, H. S., & Datar, V. V. (2003). Field surveys of pearl millet downy mildew—effects of hybrids, fungicide and cropping sequence. Journal of Mycology and Plant Pathology, 33, 387–394.

    Google Scholar 

  • Thakur, R. P., Rao, V. P., Wu, B. M., Subbarao, K. V., Shetty, H. S., Singh, G., et al. (2004). Host resistance stability to downy mildew in pearl millet and pathogenic variability in Sclerospora graminicola. Crop Protection, 23, 901–908.

    Article  Google Scholar 

  • Thakur, R. P., Shetty, H. S., & Khairwal, I. S. (2006). Pearl millet downy mildew research in India: progress and perspectives. International Sorghum and Millets Newsletter, 47, 125–130.

    Google Scholar 

  • Thakur, R. P., Rai, K. N., Khairwal, I. S., & Mahala, R. S. (2008). Strategy for downy mildew resistance breeding in pearl millet. e-Journal of SAT Agricultural Research, 6.

  • Thind, T. S. (2008). Fungicide resistance: a perpetual challenge in disease control. Journal of Mycology and Plant Pathology, 38, 407–418.

    CAS  Google Scholar 

  • Williams, R. J., & Singh, S. D. (1981). Control of pearl millet downy mildew by seed treatment with metalaxyl. Annals of Applied Biology, 97, 263–268.

    Article  CAS  Google Scholar 

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Acknowledgements

Critical review and useful comments by our colleague Dr. Suresh Pande is gratefully acknowledged and contribution of Mr. SM Ahmed in refining the figures is appreciated.

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Correspondence to Ram P. Thakur.

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Thakur, R.P., Rao, V.P. & Sharma, R. Influence of dosage, storage time and temperature on efficacy of metalaxyl-treated seed for the control of pearl millet downy mildew. Eur J Plant Pathol 129, 353–359 (2011). https://doi.org/10.1007/s10658-010-9679-9

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