TITLE

Effects of Wood Amendments on the Degradation of Terbuthylazine and on Soil Microbial Community Activity in a Clay Loam Soil

AUTHOR(S)
Grenni, Paola; Rodríguez-Cruz, M.; Herrero-Hernández, Eliseo; Marín-Benito, Jesús; Sánchez-Martín, Maria; Barra Caracciolo, Anna
PUB. DATE
September 2012
SOURCE
Water, Air & Soil Pollution;Sep2012, Vol. 223 Issue 8, p5401
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The herbicide terbuthylazine is widely used within the EU; however, its frequent detection in surface and groundwater, together with its intrinsic toxicological properties, may pose a risk both for human and environmental health. Organic amendments have recently been proposed as a possible herbicide sorbent in soil, in order to limit herbicide movement from soil to water. The environmental fate of terbuthylazine depends not only in its mobility but also in its persistence. The latter is directly dependent on microbial degradation. For this reason, the effects of pine and oak residues on terbuthylazine soil microbial community functioning and on the potential of this community for terbuthylazine degradation were studied. For this purpose, degradation kinetics, soil dehydrogenase activity and the number of live bacteria were assessed in a clay loam soil treated with terbuthylazine and either amended with pine or oak wood or unamended (sterilised and non-sterilised). At day 65, 85 % of the herbicide applied still persisted in the sterile soil, 73 % in the pine-amended one and 63 % in the oak-amended and unamended ones. Pine residues increased the sorption of terbuthylazine to soil and hampered microbial degradation owing to its high terbuthylazine sorption capacity and a decrease in the bioavailability of the herbicide. On the contrary, in the presence of oak residues, the herbicide sorption did not increase significantly. The overall results confirm the active role of the soil microbial community in terbuthylazine degradation in amended and unamended soils and in a liquid enrichment culture performed using an aliquot of the same soil as the inoculum. In this clay loam soil, in the absence of amendments, the herbicide was found to be quite persistent ( t > 95 days), while in the enrichment culture, the same natural soil bacterial community was able to halve terbuthylazine in 24 days. The high terbuthylazine persistence in this soil was presumably ascribable to its texture and in particular to the mineralogy of the clay fraction.
ACCESSION #
80028456

 

Related Articles

  • Managing soil compaction after excessively wet year.  // Western Farm Press Exclusive Insight;2/5/2020, pN.PAG 

    Surface tillage alone may be sufficient to reduce the compaction, and that compaction repair can take multiple growing seasons. For surface compaction, if ruts are present, light tillage may be all that is necessary to prepare for planting, and for no-till, localized tillage to fill ruts may be...

  • Managing soil compaction after excessively wet year.  // Corn & Soybean Digest Exclusive Insight;2/5/2020, pN.PAG 

    Surface tillage alone may be sufficient to reduce the compaction, and that compaction repair can take multiple growing seasons. For surface compaction, if ruts are present, light tillage may be all that is necessary to prepare for planting, and for no-till, localized tillage to fill ruts may be...

  • Managing soil compaction after excessively wet year.  // Delta Farm Press Exclusive Insight;2/5/2020, pN.PAG 

    Surface tillage alone may be sufficient to reduce the compaction, and that compaction repair can take multiple growing seasons. For surface compaction, if ruts are present, light tillage may be all that is necessary to prepare for planting, and for no-till, localized tillage to fill ruts may be...

  • Managing soil compaction after excessively wet year.  // Southeast Farm Press Exclusive Insight;2/5/2020, pN.PAG 

    Surface tillage alone may be sufficient to reduce the compaction, and that compaction repair can take multiple growing seasons. For surface compaction, if ruts are present, light tillage may be all that is necessary to prepare for planting, and for no-till, localized tillage to fill ruts may be...

  • Managing soil compaction after excessively wet year.  // Southwest Farm Press Exclusive Insight;2/5/2020, pN.PAG 

    Surface tillage alone may be sufficient to reduce the compaction, and that compaction repair can take multiple growing seasons. For surface compaction, if ruts are present, light tillage may be all that is necessary to prepare for planting, and for no-till, localized tillage to fill ruts may be...

  • Managing soil compaction after excessively wet year.  // Farm Industry News Exclusive Insight;2/5/2020, pN.PAG 

    Surface tillage alone may be sufficient to reduce the compaction, and that compaction repair can take multiple growing seasons. For surface compaction, if ruts are present, light tillage may be all that is necessary to prepare for planting, and for no-till, localized tillage to fill ruts may be...

  • Responses of Soil Microbial Biomass and Enzyme Activities to Tillage and Fertilization Systems in Soybean (Glycine max L.) Production. Heidari, Gholamreza; Mohammadi, Khosro; Sohrabi, Yousef // Frontiers in Plant Science;11/21/2016, Vol. 7, p1 

    Tillage operation and fertilizer type play important roles in soil properties as far as soil microbial condition is concerned. Information regarding the simultaneous evaluation of the effect of long-term tillage and fertilization on the soil microbial traits of soybean farms is not available....

  • CHANGE IN SOIL FERTILITY AS INFLUENCED BY VARYING LEVELS OF FERTILIZATION TO KHARIF CROPS AND DIFFERENT WHEAT BASED CROPPING SYSTEMS IN SOUTHERN RAJASTHAN, INDIA. Sharma, S. K.; Jain1, N. K. // Indian Journal of Agricultural Research;Oct2014, Vol. 48 Issue 5, p352 

    A field experiment was conducted on sandy clay loam soil during kharif and rabi of 2008-09 and 2009-10. There were 3 wheat - based cropping systems (maize -wheat, groundnut - wheat and clusterbean –wheat) and 3 treatments (100 % NPK, 100 % NPKS and 100 % NPKSZn) applied to kharif crops,...

  • Evaluation of Arthrobacter aurescens Strain TC1 as Bioaugmentation Bacterium in Soils Contaminated with the Herbicidal Substance Terbuthylazine. Silva, Vera P.; Moreira-Santos, Matilde; Mateus, Carla; Teixeira, Tânia; Ribeiro, Rui; Viegas, Cristina A. // PLoS ONE;12/14/2015, Vol. 10 Issue 12, p1 

    In the last years the chloro-s-triazine active substance terbuthylazine has been increasingly used as an herbicide and may leave residues in the environment which can be of concern. The present study aimed at developing a bioaugmentation tool based on the soil bacterium Arthrobacter aurescens...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics