Effects of urease and nitrification inhibitors on soil N, nitrifier abundance and activity in a sandy loam soil

A - Papers appearing in refereed journals

Fu, Q., Abadie, M., Blaud, A., Carswell, A. M., Misselbrook, T. H., Clark, I. M. and Hirsch, P. R. 2019. Effects of urease and nitrification inhibitors on soil N, nitrifier abundance and activity in a sandy loam soil . Biology And Fertility Of Soils. pp. 1-10.

AuthorsFu, Q., Abadie, M., Blaud, A., Carswell, A. M., Misselbrook, T. H., Clark, I. M. and Hirsch, P. R.
Abstract

Inhibitors of urease and ammonia monooxygenase can limit the rate of conversion of urea to ammonia and ammonia to nitrate, respectively; potentially improving N fertilizer use efficiency and reducing gaseous losses. Winter wheat grown on a sandy soil in the UK was treated with urea fertilizer with the urease inhibitor N-(n-butyl) thiophosphoric triamide (NBPT), the nitrification inhibitor dicyandiamide (DCD) or a combination of both. The effects on soil microbial community diversity, the abundance of genes involved in nitrification, and crop yields and net N recovery were compared. The only significant effect on N-cycle genes was a transient reduction in bacterial ammonia monooxygenase abundance following DCD application. However, overall crop yields and net N recovery were significantly lower in the urea treatments compared to an equivalent application of ammonium nitrate fertilizer, and significantly less for urea with DCD than the other urea treatments.

KeywordsUrea fertilizer; Urease inhibitor; Nitrification inhibitor; Arable soil; Nitrification genes
Year of Publication2019
JournalBiology And Fertility Of Soils
Journal citationpp. 1-10
Digital Object Identifier (DOI)doi:10.1007/s00374-019-01411-5
Open accessPublished as bronze (free) open access
FunderBiotechnology and Biological Sciences Research Council
Funder project or codeS2N - Soil to Nutrition - Work package 1 (WP1) - Optimising nutrient flows and pools in the soil-plant-biota system
UK - China Virtual Joint Centre for Improved Nitrogen Agronomy (CINAG)
Publisher's version
Copyright license
CC BY 4.0
Accepted author manuscript
Copyright license
CC BY 4.0
Supplemental file
Copyright license
CC BY 4.0
Output statusPublished
Publication dates
Online25 Nov 2019
Publication process dates
Accepted22 Oct 2019
PublisherSpringer
ISSN0178-2762

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