A.C. Pote, P.U. Bhosale and S.A. Anararse
Abstract
The field experiment was conducted at Instructional Farm, Department of Soil Science and Agriculture Chemistry, Post Graduate Institute, Research Farm, M.P.K.V., Rahuri during kharif season of 2019-20 to find out âResponse of sources of biochar incubated with FYM on yield and soil carbon pools after harvest of fodder maizeâ. The initial soil samples were collected from the experimental field and analysed the initial chemical properties. The texture of the soil was clay loam. The soil was low in available N, medium in available P, and high in available K. The field experiment was laid out in Randomized Block Design (RBD) and consisted of seven treatments and three replication. The application of FYM incubated biochar of cotton stalk significantly increased yield of fodder maize (50.63 t ha-1), which was at par with T5, (48.51 t ha-1), T7, (46.26 t ha-1), T6, (46.23 t ha-1) and T4 (45.16 t ha-1) treatments. The lowest yield of fodder maize (21.36 t ha-1) was recorded in absolute control treatment. The higher soil organic carbon (0.82%) was recorded with the application of T3 treatments, (Cotton stalk biochar incubated with FYM (1:1) (2.5:2.5 t ha-1), which was at par with T7 (0.78 %) treatments. The significantly maximum total organic carbon (1.23 %), which was at par with T5 (1.13 %), T7, (1.10%)and T6, (1.09 %) as compared to control. The application of T3 treatments, (Cotton stalk biochar incubated with FYM (1:1) (2.5:2.5 t ha-1) recorded significantly higher soil microbial biomass carbon (219.6 mg kg-1) , which was at par with T5 treatments (208.1mg kg-1) Pigeon pea stalk biochar incubated with FYM (1:1) (2.5:2.5 t ha-1) and T2, (195.2 mg kg-1) GRDF (100:50:50 kg ha-1+ 5 t ha-1 FYM). The lowest soil organic carbon (0.63 %), total organic carbon (0.95 %), soil microbial biomass carbon (131.9mg kg-1) was recorded in absolute control treatment.