Tolerance of Phosphorus and Potassium Solubilizing Bacteria to Fungicides In vitro
Neha Hemant Patil
Department of Plant Pathology, College of Agriculture, Latur. Maharashtra, India.
Sunita J. Magar *
College of Agriculture, Latur, India.
S. D. Somwanshi
Krishi Vigyan Kendra, Badnapur, Jalna, Maharashtra, India.
Rajashri Harishchandra Mali
Department of Plant Pathology, College of Agriculture, Latur, India.
Gauri Ganesh Nashte
Department of Plant Pathology, College of Agriculture, Latur, India.
*Author to whom correspondence should be addressed.
Abstract
Phosphorus solubilizing bacteria (PSB) and Potassium solubilizing bacteria (KSB) plays a vital role in converting these nutrients into forms that plants can readily absorb, thus enhancing soil fertility and crop yields. The compatibility of phosphorus and potassium solubilizing bacteria with 8 fungicides was tested under laboratory condition. The eight fungicides tested against PSB-1, the Carbendazim 50% WP, Propiconazole 25% EC and Carbendazim 12% + Mancozeb 63% WP were found highly compatible with phosphorus solubilizing bacteria and rest of the five fungicides viz., Mancozeb 75% WP, Zineb 75% WP, Metalaxyl 35 % WS, Azoxystrobin 18.2 % + Difenoconazole 11.4 % SC, Azoxystrobin 11% + Tebuconazole 18.3 % were incompatible with the test bacterium. The treatment T8 (Azoxystrobin 11% + Tebuconazole 18.3 %) were found statistically at par at 48 and 72 hrs of incubation at 50% of recommended dose and recommended dosages. the eight fungicides tested against KSB-2 Carbendazim 50% WP, Propiconazole 25% EC and Carbendazim 12% + Mancozeb 63% WP were found highly compatible with phosphorus solubilizing bacteria and rest of the five fungicides viz., Mancozeb 75% WP, Zineb 75% WP, Metalaxyl 35 % WS, Azoxystrobin 18.2 % + Difenoconazole 11.4 % SC, Azoxystrobin 11% + Tebuconazole 18.3 % were incompatible bacterium with the test bacterium. The treatment T8 (Azoxystrobin 11% + Tebuconazole 18.3% SC) and treatment T1 (Mancozeb 75% WP) were found statistically at par at 48 and 72 hrs of incubation at 50% of recommended dose and recommended dosages.
Keywords: Fungicides, phosphorus solubilizing bacteria, potassium solubilizing bacteria, compatibility