Biological inhibition of denitrification (BDI) in the field: Effect on plant growth in two different soils
Intensive agriculture uses increasingly large amounts of nitrogen fertilizers to increase yields because nitrogen is one of the limiting factor of plant growth. Plants are in direct competition with denitrifying bacteria for nitrate, but biological denitrification inhibition (BDI) is a strategy deve...
Gespeichert in:
Veröffentlicht in: | Applied soil ecology : a section of Agriculture, ecosystems & environment ecosystems & environment, 2021-03, Vol.159, p.103857, Article 103857 |
---|---|
Hauptverfasser: | , , , , , , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | Intensive agriculture uses increasingly large amounts of nitrogen fertilizers to increase yields because nitrogen is one of the limiting factor of plant growth. Plants are in direct competition with denitrifying bacteria for nitrate, but biological denitrification inhibition (BDI) is a strategy developed by some plants in which procyanidins are produced that inhibit denitrification. This phenomenon increases the available nitrate in the soil. Previous results showed that the addition of procyanidins to lettuce fields allowed effective BDI and increased soil nitrate and plant growth. However, agriculture is performed in different soils, and the action of procyanidins could depend on the type of soil. In this study, we tested the effect of procyanidin amendment on lettuce growth in two types of soils: loamy sand and sandy clay loam. Our results show that in both soils, the addition of procyanidins causes inhibition of denitrification, an increase in available nitrate, counter-selection of denitrification communities and a gain in plant mass without modification of the soil structure. This study highlights a sustainable agricultural method effective in a variety of soils.
•Exogenenously applied procyanidins in the field increases lettuce crop yields.•Procyanidins amended in soil with lettuce induce BDI on two different soils.•Field application of procyanidins is effective on lettuce growth on two soils.•Procyanidins induce counter-selection of denitrifiers on two different soils.•The application of procyanidins in the field does not influence the soil structure. |
---|---|
ISSN: | 0929-1393 1873-0272 |
DOI: | 10.1016/j.apsoil.2020.103857 |