Vol. 11, Issue 11 (2022)

Author(s):
Marella Rahul Reddy, Abhay Vijay Patil, Deepak Dulaji Sawale, Marella Nikhileshwar Reddy, Sumayya, Sonunkar Chandrakant Dattarao, Murodiye Kishor Ramchandra and Pagare Supriya Gopa

Abstract:
A present investigation was conducted at Regional Fruit Research Station, Ganeshkhind, Pune and Division of Soil Science and Agricultural Chemistry, College of Agriculture, Pune during 2020-2021. The experiment was conducted on existing mango orchard of age 13 years planted in the year 2006, from that, eight alternate bearing exotic mango genotypes were identified for study along with conventionally cultivated soil (Without mango tree). The soil samples collected beneath the mango genotype Hy-13/3 was recorded ssignificantly higher active carbon pools viz., water soluble carbon (79.50 and 54.00 mg kg^-1), soil microbial biomass carbon (544.00 and 413.00 mg kg^-1), permanganate oxidizable soil carbon (1531.00 and 812.00 mg kg^-1) and passive carbon pool like particulate organic carbon (1180.50 and 552.00 mg kg-1) at 0-30 and 30-60 cm depth as compared to conventionally cultivated soil. Similarly Hy-13/3 was reported higher total organic carbon content (0.94 and 0.88%) as compared to conventionally cultivated soil (0.76 and 0.65%) at 0-30 and 30-60cm depth respectively. Significantly higher soil organic carbon stock was recorded with Hy-13/3 (36.24 and 34.32 Mg ha^-1) followed by Lily (36.05 and 33.74 Mg ha^-1) while lower soil organic carbon stock was observed in Kent (34.85 and 31.12 Mg ha^-1) mango genotypes at both depths. However least soil organic carbon stock was recorded in conventionally cultivated soil (30.35 and 26.22 Mg ha^-1) at 0-30 and 30-60 cm depth respectively. Significantly higher values of all soil carbon fractions under study were found in upper depth (0-30 cm) than the lower depth (30-60 cm).In case of carbon sequestration per plant after thirteen years of mango orchard age, Hy-13/3 genotype was superior (90.60 and 85.80 kg tree^-1) among all the genotype studied which was closely followed by Lily (90.13 and 84.35 kg tree^-1) at both depths.