Leaching of Clothianidin in Two Different Indian Soils: Effect of Organic Amendment

Abstract

Clothianidin is a widely used insecticide under Indian subtropical condition. The objective of this study was to generate residue data which aims to understand leaching potential of clothianidin [(E)-1-(2-chloro-1,3-thiazol-5-ylmethyl)-3-methyl-2- nitroguanidine] through packed soil column. The maximum amount of clothianidin was recovered at 0-5 cm soil depth in both Manipur (67.15%) and Delhi soil (52.0%) under continuous flow condition. Manipur and Delhi soil concentrated maximum residue with or without farm yard manure (FYM) in 0-20 cm soil depth. The effect of varying the amount of water enhanced the distribution of residues in the first 0-5 cm layer. Among the tested soils, residue was detected in the leachate from Delhi soil (0.04 µg/mL). Clothianidin leaching was minimized in soil of Manipur compared to Delhi after incorporation of FYM. As the volume of water increased upto 160 mL, mobility increased and residues moved to lower depth. Clothianidin did not leach out of the 25 cm long soil columns even after percolating water equivalent to 415.42 mm rainfall. Clothianidin is mobile in soil system and mobility can be reduced by organic amendment application.

Uptake and toxicity of clothianidin to monarch butterflies from milkweed consumption

“…Neonicotinoid insecticide mobility in soils is inversely related to soil organic carbon (Zhang et al, 2018;Singh et al, 2018). Zhang et al (2018) reported that sorption affinity of clothianidin for four different soils declined with organic carbon content, while Singh et al (2018) reduced clothianidin concentrations in the leachate of soils by amending them with farm yard manure. The organic carbon content for the potting soil used in the present study was measured to be approximately 80%.…”

Peer Review #2 of "Uptake and toxicity of clothianidin to monarch butterflies from milkweed consumption (v0.1)"

“…Neonicotinoid insecticide mobility in soils is inversely related to soil organic carbon Singh et al, 2018). Zhang et al (2018) reported that sorption affinity of clothianidin for four different soils declined with organic carbon content, while Singh et al (2018) reduced clothianidin concentrations in the leachate of soils by amending them with farm yard manure. The organic carbon content for the potting soil used in the present study was measured to be approximately 80%.…”

Biochar Application for Soil Quality Improvement: An Overview

“…Moreover, biochar has been found to mitigate toxic contaminants and modify soil enzymes [143]. Furthermore, biochar application has been associated with increased root colonization and spore germination of mycorrhizal fungus, attributing to improvements in soil properties [144,145]. It has also shown potential to enhance biological nitrogen fixation in various crops [146][147][148].…”