Publications by authors named "Ramdas G Kanissery"
The influence of soil environmental factors such as aeration on the ecology of microorganisms involved in the mineralization and degradation of the popular soil-applied pre-emergent herbicide, metolachlor is unknown. To address this knowledge gap, we utilized DNA-based stable isotope probing (SIP) where soil microcosms were incubated aerobically or anaerobically and received herbicide treatments with unlabeled metolachlor or C-metolachlor. Mineralization of metolachlor was confirmed as noted from the evolution of CO from C-metolachlor-treated microcosms and clearly demonstrated the efficient utilization of the herbicide as a carbon source.
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- The study investigated how C-glyphosate behaves in different soil types (Catlin, Flanagan, and Drummer) under both oxygen-rich and oxygen-poor conditions.
- Soil aeration generally did not affect how well C-glyphosate was absorbed, but desorption of the herbicide increased in low-oxygen conditions across all soil types.
- Phosphate addition reduced C-glyphosate absorption and enhanced its degradation only in anoxic (low oxygen) soils, highlighting the role of soil conditions on glyphosate's availability and movement.