Journal of Pure and Applied MicrobiologyVol. 6 No. 4

Management of Leaf Spot/Blight of Heliconia Caused by [Drechslera State of Trichometasphaeria holmii] Using Fungicides

S.S. Kansara1*, D.M. Joshi2 and J.C. Dhingani3

1Department of Agril. Entomology, N.M. College of Agriculture, Navsari Agricultural University, Navsari, Gujarat, India 2Retired-Professor of Plant Pathology, Plant Pathology Department, ASPEE College of Horticulture and Forestry, Navsari Agricultural University, Navsari, Gujarat, India, 3Agricultural Officer, Cotton Research Station, Kukada, Surendranagar, Junagadh Agricultural University, Junagadh, Gujarat, India.

Received on 30 April 2012 and accepted on 08 June 2012

 

ABSTRACT

Fifteen fungicides of four different categories viz., six systemic, four non-systemic, two antibiotics and three mixed formulation and their three concentrations were tested in vitro for their efficacy against Drechslera state of Trichometasphaeria holmii by poisoned food technique. All the fungicides evaluated significantly reduced the growth of the pathogen as compared to control but all the fungicides and their concentrations significantly differed within themselves. The higher concentration of each fungicide produced maximum growth inhibition of the pathogen. Among the different fungicides tested, propiconazole (Tilt 25% EC), tricyclazole (Beam 75 %WP), tridemorph (Calixin 80 % EC) from systemic group, copper oxychloride (Blitox 50%WP) and MEMC (Emisan 6% WP) from non systemic group, kasugamycin (Kasu-B 3% L) from antibiotics, carbendazim 25 % + ipridione 27 % (Quintal 50 % WP) and carbendazim 25 % + mancozeb 27 %(Sixer 75 %WP) from mixed formulations completely inhibited growth of the pathogen and proved to be highly fungitoxic to Drechslera state of Trichometasphaeria holmii.

Keywords : Drechslera state of Trichometasphaeria holmii, Leaf spot/ blight, Fungicides, Heliconia.