International Journal of Plant Protection

A. Prashantha ¹, Arun R. Sataraddi ², S. V. Patil ³, M. S. Lokesh ⁴, S. B. Gurumurthy ¹, K. Chandan ¹

Affiliations
1 College of Horticulture, [U.H.S.(B)], Sirsi, Uttara Kannada Karnataka, IN
2 Department of Plant Pathology, College of Agriculture, [U.A.S.(D.)],Bijapur Karnataka, IN
3 AICRP on Spices, Horticulture Research Station [U.H.S.(B.)], Sirsi, Uttara Kannada Karnataka, IN
4 College of Horticulture, [U.H.S.(B)], Sirsi, Uttara Kannada Karnataka

Abstract

The severity of pomegranate anthracnose was more in Bagalkot district (35.84%) followed by Koppal (27.22%), Bijapur (24.85%) and Raichur (18.14%) districts. The identity of the fungus was confirmed as Colletotrichum gloeosporioides (Penz.) Penz. and Sacc and deposited at NCFT, New Dehli. The isolates of C. gloeosporioides showed maximum growth on Potato dextrose agar and Richard's broth on 13 th day after incubation at 27±1oC. There was variability among eight isolates of C. gloeosporioides with respect to type of growth, mycelial colour, pigmentation, size of the spore and sporulation. The highest radial growth and sporulation of the fungus was recorded at 30 oC, with 100 per cent relativ

Keywords

Pomegranate, Anthracnose colletotrichumgloeosporioides

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A. Prashantha ¹, Arun R. Sataraddi ², S. V. Patil ¹, M. S. Lokesh ³, K. Chandan ⁴, S. B. Gurumurthy ⁴

Affiliations
1 College of Horticulture [U.H.S.(B)], Sirsi, Uttara khannada Karnataka, IN
2 College of Agriculture, University of Agricultural Sciences, Dharwad Karnataka, IN
3 AICRP on Spices Horticulture Research Station [U.H.S.(B.)], Sirsi, Uttara kannada Karnataka, IN
4 College of Horticulture [U.H.S.(B)], Sirsi, Uttara kannada Karnataka, IN

Abstract

Pomegranate (Punica granatum L.) is a commercially an important fruit of both tropical and subtropical countries and belongs to the family Punicaceae. The fruits are susceptible to various biotic stress caused by fungi, bacteria and physiological disorders. Among the various fungal diseases, anthracnose (Colletotrichum gloeosporioides (Penz.) Penz. and Sacc.) is one of the most serious diseases of pomegranate worldwide. Like many of pathogenic fungi it also remains latent during maturity of the fruit and expresses symptoms during storage. Further, conidia of the C. gloeosporioides which are abundant in the atmosphere of tropical plantation may lodge on the surface of the fruits as the fruits approaching maturity. Propagules of the pathogen cause lesions and decay of the fruit. Among the chemicals inducing systemic resistance viz., salicylic acid and benzoic acid were found more effective in reducing the per cent disease index with high total soluble solid, low total titrable acidity and less physiological loss in weight after eight days of storage.

Keywords

Pomegranate, Anthracnose, Chemicals Inducing Systemic Resistance, Bioagents, Botanicals

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