FARMYARD MANURE-INDUCED CHANGES IN SOIL CARBON SEQUESTRATION AND ORGANIC MATTER STABILITY

Abstract

 This trial appraised the impact of fluctuating levels of farmyard manure (FYM) on soil carbon sequestration and organic matter constancy under controlled conditions at Ayub Agricultural Research Institute, Faisalabad. Four treatments were applied: 0, 10, 20, and 30 t/ha FYM. Outcomes signposted that FYM application expressively enhanced soil organic matter fractions. The highest level of FYM (30 t/ha) resulted in maximum total organic carbon (TOC) at 1.08 ± 0.04%, followed by 0.89 ± 0.03% and 0.74 ± 0.03% under 20 and 10 t/ha, respectively, compared to the control (0.58 ± 0.02%). Particulate organic matter carbon (POM-C) also amplified with FYM, getting 0.54 ± 0.02% under 30 t/ha, approximately triple the control (0.19 ± 0.01%). Similarly, mineral-associated organic carbon (MAOC) emaciated at 0.67 ± 0.02% in the premier FYM treatment. These outcomes recommend that FYM, particularly at 30 t/ha, can play a momentous role in augmenting soil organic carbon pools, promoting carbon constancy and causative to sustainable soil fertility management. The study accentuates the significance of organic amendments in cultivating soil health and backings the adoption of FYM as a feasible strategy for carbon sequestration in agricultural soils.