Use of Biostimulants on Soil Restoration in Polluted Soils by Pesticides: Effects on Soil Biochemical Properties

A special issue of Agronomy (ISSN 2073-4395).

Deadline for manuscript submissions: closed (31 December 2023) | Viewed by 1974

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Grupo de Investigación Edafología Ambiental, Departamento de Cristalografía, Mineralogía y Química Agrícola, E.T.S.I.A. Universidad de Sevilla, Crta de Utrera Km. 1, 41013 Sevilla, Spain
Interests: soil biology; organic wastes; soil bioremediation; crops
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Biochemistry and Molecular Biology Department, Facultad de Farmacia C/Prof, Garcia Gonzalez 2, University of Sevilla, Sevilla, Spain
Interests: Bioquímica y Biología Molecular
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues, 

The extensive use of various pesticides in agriculture with the objective of eliminating possible pests caused by weeds, insects or pathogens that can cause a negative effect on the development of crops and, consequently, on their yield is causing a serious environmental problem due to the consequent contamination of soils and aquifers.

Given this fact, in recent years, different types of biostimulants have been used in order to eliminate these pesticides in the soil and thus reduce these negative environmental effects.

It has been shown that a large number of these biostimulants have a positive effect on soil biology, increasing both its biochemical activity and biodiversity and, consequently, accelerating the degradation of these pesticides in the soil. However, there is a lack of information on the effects and mode of action of biostimulants that operate on soil biochemistry and, consequently, on the degradation of pesticides in the soil.

Therefore, we need to improve the understanding of the relationship between the degradation of pesticides in contaminated soil after the application of biostimulants and the biochemistry of the soil. For this reason, this Special Issue will focus on the restoration of soils contaminated by pesticides after the application of biostimulants, with special emphasis on the biochemical activity of the soils. Articles highlighting the influence of biostimulants in such pesticide-contaminated soils on soil biochemistry will be welcome. This Special Issue will generate more knowledge about this challenge for the sustainability of agriculture.

Prof. Dr. Manuel Tejada
Prof. Dr. Juan Parrado
Guest Editors

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Keywords

  • biostimulants
  • soil restoration
  • pesticides
  • pollution
  • soil biochemical activities

Published Papers (1 paper)

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Research

12 pages, 498 KiB  
Article
Use of Biostimulants Obtained from Sewage Sludge for the Restoration of Soils Polluted by Diuron: Effect on Soil Biochemical Properties
by Manuel Tejada, Isidoro Gómez, Patricia Paneque, Marina del Toro, Albert García-Quintanilla and Juan Parrado
Agronomy 2023, 13(1), 24; https://doi.org/10.3390/agronomy13010024 - 22 Dec 2022
Cited by 4 | Viewed by 1613
Abstract
The use of biostimulants in the bioremediation of polluted soils in order to eliminate/reduce the toxic effects of pesticides on the soil is currently a very common environmental practice. In this study, we studied the bioremediation effect of three biostimulants obtained from sewage [...] Read more.
The use of biostimulants in the bioremediation of polluted soils in order to eliminate/reduce the toxic effects of pesticides on the soil is currently a very common environmental practice. In this study, we studied the bioremediation effect of three biostimulants obtained from sewage sludge by way of an enzymatic hydrolysis and fermentation process in a diuron-contaminated soil for 55 days under laboratory conditions. During this period of time, the enzymatic activities, bacterial community and the evolution of diuron in the soil were analyzed. Compared with the unpolluted soil, the application of diuron decreased the dehydrogenase, β-glucosidase and phosphatase activities by 60%, 40.7%, and 60.6%, respectively. The Gram-positive bacterial population was decreased by 48.5%, while the Gram-negative population was decreased by 57.7% and the fungal population was decreased by 54.3%. The application of the three biostimulants to the soil decreased the diuron concentration. However, this decrease was higher when the biostimulant obtained by enzymatic hydrolysis was applied. This may be due to the fact that this biostimulant contains a higher quality of low molecular weight proteins than the other two biostimulants obtained by fermentation processes. Full article
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