Estimation of terrestrial carbon stock as influenced by mango orchard at Dhule region

Abstract

The present research investigation has been carried out at the Horticulture Farm, College of Agriculture, Dhule, throughout the years 2021-2022. The trial used a randomised block design, with nine treatments replicated three times. Treatments T1–T8 are plants taken from a 19-year-old orchard, whereas T9 is the control.T5 had a higher tree height (527.33 cm), while T8 had a higher diameter at breast height (88.39 cm), tree volume (3206.37 m2), above ground biomass (2180.33 kg tree-1), below ground biomass (566.89 kg tree-1), and total plant biomass (2757.8 kg tree-1), resulting in a higher accumulation of plant carbon (1373.61 kg tree-1). Higher total organic carbon (TOC) 0.94%, 0.83% and 0.58%, water soluble carbon (WSC) -173.15 mg kg-1, 150 mg kg-1 and 90.67 mg kg-1, soil microbial biomass carbon (SMBC) 480.61 mg kg-1, 402.27 mg kg-1 and 318.31 mg kg-1, permanganate oxidizable soil carbon (POSC) 1213.50 mg kg-1,965.24 mg kg-1 and 798.40 mg kg-1, fulvic acid carbon 21.63 mg kg-1, 19.48 and 12.28 mg kg-1, humic acid carbon 13.70 mg kg-1, 11.22 mg kg-1, 7.75 mg kg-1, Soil organic carbon (SOC) stock content in mango orchard soil is 36.42 mg ha-1, 32.91 mg ha-1, 23.44 mg ha-1 recorded at the depth of 0-30 cm, 30-60 cm and 60-90 cm, respectively. On an average, 1116.31 kg tree-1 i.e. 111.63 t ha-1 plant carbon has been sequestered in 19 years old mango orchard.