Microbial Inoculation Influencing Physical Properties of Composts Produced from Different Agro-wastes
Kshitipati Padhan *
Department of Soil Science and Agricultural Chemistry, College of Agriculture, Odisha University of Agriculture and Technology, Bhubaneswar, Odisha-751003, India.
Ranjan Kumar Patra
Department of Soil Science and Agricultural Chemistry, College of Agriculture, Odisha University of Agriculture and Technology, Bhubaneswar, Odisha-751003, India.
Alok Kumar Patra
Department of Agronomy, College of Agriculture, Odisha University of Agriculture and Technology, Bhubaneswar, Odisha-751003, India.
Akshaya Kumar Senapati
Department of Plant Pathology, College of Agriculture, Odisha University of Agriculture and Technology, Bhubaneswar, Odisha-751003, India.
Sanjib Kumar Sahoo
Department of Soil Science and Agricultural Chemistry, College of Agriculture, Odisha University of Agriculture and Technology, Bhubaneswar, Odisha-751003, India.
Shraddha Mohanty
Department of Soil Science and Agricultural Chemistry, College of Agriculture, Odisha University of Agriculture and Technology, Bhubaneswar, Odisha-751003, India.
Narayan Panda
Department of Soil Science and Agricultural Chemistry, College of Agriculture, Odisha University of Agriculture and Technology, Bhubaneswar, Odisha-751003, India.
Suman G. Sahu
Department of Soil Science and Agricultural Chemistry, College of Agriculture, Odisha University of Agriculture and Technology, Bhubaneswar, Odisha-751003, India.
Ketan Kumar
Department of Soil Science and Agricultural Chemistry, College of Agriculture, Odisha University of Agriculture and Technology, Bhubaneswar, Odisha-751003, India.
Debadatta Sethi
Department of Soil Science and Agricultural Chemistry, College of Agriculture, Odisha University of Agriculture and Technology, Bhubaneswar, Odisha-751003, India.
*Author to whom correspondence should be addressed.
Abstract
A laboratory experiment was carried out on composting of three organic substrates viz; paddy straw, vegetable waste and maize stover by using three isolated cellulose degrading bacteria viz; CBG2, CBD4 and CBC9. The physical properties after final products were examined. Irrespective of the strains inoculation the bulk density (BD) of paddy straw was highest (0.82 Mg m-3) followed by maize stover compost (0.74 Mg m-3) and vegetable waste compost (0.73 Mg m-3). Irrespective of the substrates, the PD of the composts, was highest (1.55 Mg m-3) in uninoculated control followed by CBC9 (1.02 Mg m-3), CBD4 (0.97 Mg m-3) and CBG2 (0.91 Mg m-3). The porosity of the compost was highest (39 %) where CBG2 was inoculated followed by CBD4 (36%), CBC9 (35%) and uninoculated control (23%). The highest angle of repose (420) was in CBG2 treated compost followed by CBD4 (390), CBC9 (360), and lowest (340) was in uninoculated control. The tab density of compost from control was highest (1.15 Mg m-3) followed by CBC9 (0.63 Mg m-3), CBD4 (0.59 Mg m-3) and lowest was in CBG2 (0.52 Mg m-3). The highest (0.96) Husners ratio (HR) was estimated in the uninoculated- control followed by CBC9 and CBD4 (0.95). The lowest (0.94) HR was in CBG2 inoculated compost.
Keywords: Agro-waste, angle of repose, composting, hausner ratio, physical properties