Effect of Conventional and Conservation Agriculture Practices on Dissipation of Metribuzin and Clodinafop-Propargyl, Soil Enzymatic and Microbial Activities in Wheat in a Rice-Wheat System

Kaur, Parmeet; Jain, Deepali; Bhullar, Makhan S.

doi:10.1080/15320383.2023.2235432

Cited by 1 publication

(2 citation statements)

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“…A higher BIO concentration under NT has previously been reported [7,50,57]. Crop residues left on the surface under NT decrease the fluctuation in soil temperature and increase soil water content, thereby creating a suitable microhabitat for microbial growth [7,58,59]. Furthermore, the minimal disturbance of the soil under NT slows the rate of OM decomposition, resulting in more efficient carbon use and creating an appropriate environment for microbial growth.…”

Section: Soil Microbial Biomass and Structurementioning

confidence: 83%

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Changes in Soil Microbial Parameters after Herbicide Application in Soils under Conventional Tillage and Non-Tillage

Douibi,

Carpio,

Rodríguez-Cruz

et al. 2024

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This study evaluated the changes in microbial activity in the course of time following the joint application of the herbicides S-metolachlor, foramsulfuron, and thiencarbazone-methyl to two soils (S1 and S2) under conventional tillage (CT) and non-tillage (NT) management in field conditions. The biochemical parameters of soil respiration (RES), dehydrogenase activity (DHA), microbial biomass (BIO), and the phospholipid fatty acid (PLFA) profile were determined at 1, 34, and 153 days during herbicide dissipation. In the absence of herbicides, all microbial activity was higher under NT than CT conditions, with higher or similar mean values for S1 compared to S2. A continuous decrease was detected for RES, while DHA and BIO recovered over time. In the presence of herbicides, a greater decrease in all microbial activity was detected, although the changes followed a similar trend to the one recorded without herbicides. In general, a greater decrease was observed in S1 than in S2, possibly due to the higher adsorption and/or lower bioavailability of herbicides in this soil with a higher organic carbon content. The decrease was also greater under CT conditions than under NT conditions because the herbicides can be intercepted by the mulch, with less reaching the soil. These changes involved evolution of the structure of the microbial community.

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Section: Soil Microbial Biomass and Structurementioning

confidence: 83%

“…In contrast, minor changes were detected in the structure of Grampositive and Gram-negative bacteria. Such variations in the reaction of microorganisms to herbicide exposure can be attributed to the varying levels of resistance shown by these microorganisms [58].…”

Section: Discussionmentioning

confidence: 99%