Collar rot of passion fruit caused by Rhizoctonia solani and its control


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Authors

  • INDU S. SAWANT, S.D. SAWANT and M.M. GANAPATHY Central Horticultural Experiment Station (I.I.H.R.), Cheltalli, Kodagu, Karnataka 571 248

Keywords:

Passion fruit, collar rot, Rhizoctonia solani, control, Trichoderma harzianum

Abstract

Severe incidence of collar rot and wilting was observed on 4-year old passion fruit vines of the variety Purple (Passiflora edulis f. edulis Sims.), and a hybrid between purple and yellow named 'Kavery' which is reported to be resistant to Fusarium wilt. During 1986-87, the total mortality recorded was 15.3%. The following year mortality was 4.2% but the number of vines exhibiting collar rot symptoms had increased from 6.9% in January 1987 to 45,8% in January 1988. The length of the infected area ranged from 5 to 34 cm from the collar with an average length of 16 cm. All the wilted vines exhibited 0.5-1.5 cm deep cracking of the infected tissues at the collar region (Fig, 1). Experiments were conducted to identify the causal organism and to find suitable control measures for the disease.

Issue

Vol. 48 No. 2 (1995): Indian Phytopathology

Section

Short Communications

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How to Cite

and M.M. GANAPATHY, I. S. S. S. S. (2002). Collar rot of passion fruit caused by Rhizoctonia solani and its control. Indian Phytopathology, 48(2), 202-205. https://epubs.icar.org.in/index.php/IPPJ/article/view/20722