Variation in total biological productivity and soil microbial biomass in rainfed agroecosystems: Impact of application of herbicide and soil amendments

Application of mesotrione at different doses in an amended soil: Dissipation and effect on the soil microbial biomass and activity

“…The results indicated that herbicide impacts may be both negative and positive, as reported by Alexander (1981), and may not affect all soil microorganisms at the same time. The reduction in soil microbial biomass following the application of different herbicides has been reported in previous papers (Perucci et al, 2000;Vischetti et al, 2002;Singh and Ghoshal, 2010). Fig.…”

“…The amendments had a stimulating effect on soil microbial biomass, providing additional carbon sources (Singh and Ghoshal, 2010).…”

Non-symbiotic N2-fixation and phosphate-solubility in Gangetic alluvial soil as influenced by pre-emergence herbicide residues

“…As compared to untreated control, the highest stimulation of phosphate-solubilizing microorganisms was recorded in the soil series treated with thiobencarb (44.6%) followed by pretilachlor (24.6%) at their respective field application rates. This manifested that the cited microorganisms utilized the herbicide residues as well as their degraded metabolites for their growth and metabolism in soil (Singh and Ghoshal, 2010). It was also revealed that phosphate-solubilizing microorganisms utilized the herbicides and their degraded products more preferably within 15 days of sampling, resulting in a significant rise in their population size followed by a gradual decrease up to the end of the experiment.…”

“…Therefore, they transform a great variety of chemical substances including the herbicide residues in soil to derive energy, carbon and other nutrients for their cellular metabolism (Bünemann et al, 2006). Consequently, the amount of microbial biomass increases (Nayak et al, 1994;Singh and Ghoshal, 2010), which in turn, favourably influences the transformations of different plant nutrients in soil (Liste and Felgentreu, 2006;Majumdar et al, 2010). On the other hand, there are some herbicides, which are not easily utilized by soil microorganisms, are also degraded and detoxified in soil by microorganisms through cometabolism (Alexander, 1978;Nongthombam et al, 2009).…”

The effect of carfentrazone-ethyl on soil microorganisms and soil enzymes activity / Wpływ karfentrazonu etylu na mikroorganizmy i aktywność enzymów glebowych

“…Dehydrogenases are found in live cells, and they are robust indicators of soil microbial activity (Sebiomo et al 2011). The effect of herbicides on soil microorganisms varies depending on the active ingredient and the applied dose (Shing and Ghoshal 2010). Carfentrazone-ethyl (CE) is the active ingredientin Aurora 40 WG, a new-generation herbicide which has been available in Poland since 2008.…”