Effect of mineral nutrients, seed treatment and foliar fungicides on spot blotch (Bipolaris sorokiniana) severity and agronomic performance of wheat (Triticum aestivum) in hot-humid environment of eastern Gangetic plain in India

ASHISH KUMAR GUPTA; RISHI RAJ; R CHOUDHARY; S P SINGH; I S SOLANKI

doi:10.56093/ijas.v87i4.69419

Authors

ASHISH KUMAR GUPTA ICAR-Indian Agricultural Research Institute Regional Station, Pusa, Samastipur, Bihar 848 125
RISHI RAJ ICAR-Indian Agricultural Research Institute Regional Station, Pusa, Samastipur, Bihar 848 125
R CHOUDHARY ICAR-Indian Agricultural Research Institute Regional Station, Pusa, Samastipur, Bihar 848 125
S P SINGH ICAR-Indian Agricultural Research Institute Regional Station, Pusa, Samastipur, Bihar 848 125
I S SOLANKI ICAR-Indian Agricultural Research Institute Regional Station, Pusa, Samastipur, Bihar 848 125

https://doi.org/10.56093/ijas.v87i4.69419

Keywords:

AUDPC, Bipolaris sorokiniana, Integrated crop management, Spot blotch, Wheat

Abstract

Spot blotch disease [Bipolaris sorokiniana (Sacc.)] is one of the most serious biotic constraint affecting wheat production in India. The effect of balanced macro- and micro-fertilization, fungicidal seed treatment and foliar fungicides either individually or in combination were assessed for their impact on spot blotch severity, grain yield, and other yield attributing characters during 2012-13 and 2013-14. Average maximum temperature (27.0°C) and high relative humidity (>90%) in February and March during both the years favoured disease development and spread. In vitro analysis of untreated pre-sown seeds using a blotter paper test revealed 19.2% and 32.5% seed infection with B. sorokiniana during 2012-13 and 2013-14, respectively. At the end of each cropping season, seed infection in harvested seed lots ranged from 5-6% in treatments with a combination of balanced fertility, seed treatment and foliar fungicide, 13% following two sprays of propiconazole, and 71% in control treatment. Application of balanced nutrition alone reduced AUDPC by 37% and increased grain yield up to 26%. However, the combined influence of balanced nutrition, carboxin + thiram seed treatment and two foliar sprays of propiconazole resulted in a 99% reduction in AUDPC values with 60% higher grain yield (6.30 t/ha), 45% higher TKW (41.33 g) and significant increase in other yield attributes. The current study illustrates the role of a combination of crop and disease management practices in the control of spot blotch and improving the agronomic performance of wheat in eastern plains of India.

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References

Aggarwal R. 2011. Progress and challenges towards reducing spot blotch disease of wheat. Indian Phytopathology 64: 322–8.

Duveiller E. 2004. Controlling foliar blights of wheat in the rice wheat systems of Asia. Plant Disease 88: 552–6. DOI: https://doi.org/10.1094/PDIS.2004.88.5.552

Duveiller E, Kandel Y R, Sharma R C and Shrestha S M. 2005a. Epidemiology of foliar blights of wheat in the plains bordering the Himalayas. Phytopathology 95: 248–56. DOI: https://doi.org/10.1094/PHYTO-95-0248

Duveiller E, Sharma R C, Mercado D, Maraite H, Bhatta M R, Ortiz-Ferrara G and Sharma D. 2005b. Controlling foliar blight of wheat in South Asia: a holistic approach. Turkish Journal of Agriculture Forestry 29: 129–35.

Marschner H.1995. Mineral Nutrition of Higher Plants, 2nd ed, p 889. Academic Press, London.

Meisner C A, Badaruddin M, Saunders D A and Alam K B. 1994. Seed treatment as a means to increase wheat yields in warm areas. (In) Wheat Heat-Stressed Environments: Irrigated Areas and Rice Wheat Systems. Saunders D A and Hettel G P (Eds). CIMMYT, Mexico DF, pp 360–6.

Poudyal D S, Duveiller E and Sharma R C. 2005. Effects of seed treatment and foliar fungicides on Helminthosporium leaf blight and on performance of wheat in warmer growing conditions. Journal of Phytopathology 153: 401–8. DOI: https://doi.org/10.1111/j.1439-0434.2005.00992.x

Regmi A P, Ladha J K, Pasuquin E M, Pathak H, Hobbs P R, Shrestha L L, Gharti D B and Duveiller E. 2002. The role of potassium in sustaining yields in a long-term rice–wheat experiment in the Indo-Gangetic plains of Nepal. Bio Fertilizers Soils 36: 240–7. DOI: https://doi.org/10.1007/s00374-002-0525-x

Sharma P, Duveiller E and Sharma R C. 2006. Effect of mineral nutrients on spot blotch severity in wheat, and associated increases in grain yield. Field Crops Research 95: 426–30. DOI: https://doi.org/10.1016/j.fcr.2005.04.015

Sharma R C and Duveiller E. 2006. Spot blotch continues to cause substantial grain yield reductions under resource limited conditions. Journal of Phytopathology 154: 482–8. DOI: https://doi.org/10.1111/j.1439-0434.2006.01134.x

Sharma S, Duveiller E, Basnet R, Karki C B and Sharma R C. 2005. Effect of potash fertilization on Helminthosporium leaf blight severity in wheat, and associated increases in grain yield and kernel weight. Field Crops Research 93: 142–50. DOI: https://doi.org/10.1016/j.fcr.2004.09.016

Simoglou K and Dordas C. 2006. Effect of foliar applied boron, manganese and zinc on tan spot in winter durum wheat. Crop Protection 25: 657–63. DOI: https://doi.org/10.1016/j.cropro.2005.09.007