International Journal of Agricultural Sciences

N. M. Jagtap ¹, C. V. Ambadkar ¹, G. A. Bhalerao ²

Affiliations
1 College of Agriculture, OSMANABAD (M.S.), IN
2 Department of Agronomy, Vasantrao Naik Marathwada Krishi Vidyapeeth, PARBHANI (M.S.), IN

Abstract

In vitro evaluation of new synthetic fungicides against Colletotrichum gloeosporioides were carried out in the Department of Plant Pathology, College of Agriculture, Osmanabad during the year 2011-12. Among the non-systemic fungicides at 0.3 per cent concentration carbendazim + mancozeb showed 82.10 per cent inhibition of mycelial growth of fungus followed by chlorothalonil with 75.80 per cent and least inhibition of mycelial growth was recorded in captan 63.48 per cent. The systemic fungicides were evaluated against the pathogen at 0.05, 0.1, 0.15 per cent concentration. Among these concentration all fungicides were significantly found superior at 0.15 per cent concentration compared to 0.1 and 0.05 per cent concentration. The maximum per cent inhibition of growth of C. gloeosporioides was observed in propiconazole (74.86%) followed by benomyl (68.17%), iprodion + carbendezim (67.67%), thiophynate methyl (64.97%). The least per cent inhibition of fungus was recorded in bittertanol (44.12%) and hexaconazole (32.62%).

Keywords

Colletotrichum gloeosporioides, Fungicides, Anthracnose, Pomegranate.

Full Text

     

N. M. Jagtap ¹, C. V. Ambadkar ¹, G. A. Bhalerao ²

Affiliations
1 College of Agriculture, OSMANABAD (M.S.), IN
2 Department of Agronomy, Vasantrao Naik Marathwada Krishi Vidyapeeth, PARBHANI (M.S.), IN

Abstract

The roving survey of anthracnose of pomegranate was carried out during June 2011- January 2012 in Latur and Osmanabad districts. Survey on the incidence and severity of anthracnose of pomegranate reveals the magnitude of the problem in pomegranate orchards and serves as a precursor for evolving the management strategies. It also gives clue about survival of pathogen during off season as weed or collateral hosts. In Latur district, pomegranate orchards of Latur, Chakur, Ausa, Nilanga, Renapur, Ahamdpur and Udgir tahsil were surveyed to find out the incidence and severity of anthracnose of pomegranate caused by Colletotrichum gloeosporioides (Penz.). In the surveyed orchards, the disease incidence ranged between 38.75 to 57.45 per cent. In this district the maximum incidence and severity of disease was recorded in Chakur tahsil followed by Udgir, Nilanga, Ahamdpur, Latur and Ausa. In Osmanabad district, the disease incidence ranged between 46.33 to 57.56 per cent. In this district the incidence and severity of disease was recorded maximum in Tuljapur followed by Washi, Kalamb and Osmanabad.

Keywords

Colletotrichum gloeosporioides, Incidence, Severity, Pomegranate.

Full Text