The win-win effects of nitrification inhibitors on soil-crop systems: Decreasing carbendazim residues but promoting soil bacterial community diversities and stabilities and crop yields

Linking Carbendazim Accumulation with Soil and Endophytic Microbial Community Diversities, Compositions, Functions, and Assemblies: Effects of Urea-hydrogen Peroxide and Nitrification Inhibitors

“…The ratio of Proteobacteria was positively associated with NH 4 + -N but negatively associated with NO 3 – -N (Figure ). The nitrification inhibitor application could increase soil N bioavailability and thereby promote the growth of Proteobacteria with a cotrophic life strategy. , We detected that the ratio of Ascomycota was positively correlated with the NH 4 + -N content, which was similar to the result of Guo et al . Meanwhile, the increased Ascomycota might bring potential disease risk to plants .…”

“…The basic soil properties were as follows: silt, 50.1%; clay, 21.7%; sand, 28.2%; soil pH, 5.3, and total N (TN), 1.82 g kg −1 dry soil. 17 Experimental Design. This experiment included 5 different treatments, and each treatment was set with four replications.…”

“…The nitrification inhibitor application could increase soil N bioavailability and thereby promote the growth of Proteobacteria with a cotrophic life strategy. 27,28 We detected that the ratio of Ascomycota was positively correlated with the NH 4 + -N content, which was similar to the result of Guo et al 17 Meanwhile, the increased Ascomycota might bring potential disease risk to plants. 29 The ratio of plant pathogen function of the soil fungal community was significantly negatively correlated with soil carbendazim accumulations (Figure S3a), and the reduction of carbendazim accumulations may negatively affect its inhibitory effect on pathogenic microorganisms.…”

“…Our result implied that the nitrification inhibitor strengthened the performances of UHP, and Guo et al also observed that the nitrification inhibitor applications decreased the fungicide accumulations in soils and carrots under the condition of urea application. 17…”

“…16 Previous studies demonstrated that DCD and DMPP applications decreased soil carbendazim accumulations and improved soil bacterial community stability. 17 systems. Therefore, we hypothesized that the responses of soil and endophytic microbial communities to the UHP and nitrification inhibitor applications were distinguished under carbendazim stress and that the soil and endophytic microbial community assemblies were dominated by different factors.…”