Occurrence of Angular Leaf Spot of Common Bean in Major Growing Areas of Himachal Pradesh And Effect of Leaf Wetness Durations on Its Development

Authors

  • Khushwinder Kaur Department of Plant Pathology, College of Agriculture Chaudhary Sarwan Kumar, Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176062
  • Amar Singh Department of Plant Pathology, College of Agriculture Chaudhary Sarwan Kumar, Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176062

Keywords:

Angular leaf spot, Severity, leaf wetness, <i>Pseudocercospora griseola</i>

Abstract

Angular leaf spot (ALS) caused by the hemibiotrophic fungus, Pseudocercospora griseola is one of the most widely distributed and damaging disease of common bean particularly in humid conditions. In Himachal Pradesh, common bean is grown during Kharif season and affected by ALS. Information on the occurrence and distribution of disease is important to develop management methods. Therefore, present study was carried out to assess the occurrence and distribution of angular leaf spot disease in major common bean growing areas of Himachal Pradesh and effect of leaf wetness durations on disease development was also evaluated under in-vivo conditions. The disease was observed in all the areas with different levels of disease severity ranging from 21.3 to 76.2 per cent. The highest disease severity was recorded in Kullu district i.e. 61.28 per cent and lowest disease severity of 43.50 per cent was recorded in Kinnaur district. The effect of leaf wetness durations on disease development studied under in-vitro conditions on susceptible variety Jwala showed a progressive increase in lesion number per leaf with the increase in wetness duration up to 24 hours.

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Published

2024-06-30

How to Cite

Kaur, K., & Singh, A. (2024). Occurrence of Angular Leaf Spot of Common Bean in Major Growing Areas of Himachal Pradesh And Effect of Leaf Wetness Durations on Its Development. Himachal Journal of Agricultural Research, 50(1), 82–87. Retrieved from http://hjar.org/index.php/hjar/article/view/172551

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Section

Full Length Papers

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