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Performance of nitrification inhibitors with different nitrogen fertilizers and soil textures
Author(s) -
Barth Gabriel,
Tucher Sabine,
Schmidhalter Urs,
Otto Rafael,
Motavalli Peter,
Ferraz-Almeida Risely,
Meinl Schmiedt Sattolo Thales,
Cantarella Heitor,
Vitti Godofredo Cesar
Publication year - 2019
Publication title -
journal of plant nutrition and soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 87
eISSN - 1522-2624
pISSN - 1436-8730
DOI - 10.1002/jpln.201800594
Subject(s) - nitrification , loam , chemistry , soil water , nitrate , ammonium , urea , ammonium sulfate , nitrogen , fertilizer , agronomy , environmental chemistry , soil science , environmental science , biochemistry , biology , organic chemistry , chromatography
Nitrification inhibitors (NIs), DCD (dicyandiamide), and DMPP (3,4‐dimethylpyrazole phosphate), in combination with urea (UR) and ammonium sulfate nitrate (ASN) fertilizers were studied under contrasting soil textures (sand, loam, and clay) from cultivated soils collected in Brazil and Germany. Soil samples were incubated over 50 days and the content of ammonium ( N -NH 4+), nitrate ( N -NO 3-), and soil pH were measured periodically. Applied NIs delayed the nitrification process across all soil textures. Correlation analysis indicated that combining ASN with NIs resulted in higherNH 4+content and efficiency in delaying the nitrification process with high N‐conversion rate ( r = –0.82). The combination of ASN+ DMPP increased the efficiency of the N‐conversion rate ( r = –0.86) due to H + release in soil, while UR+DCD ( r = –0.50) had an efficiency of the N‐conversion rate similar to UR ( r = –0.42). All the NIs had a better performance in reducing N -NO 3-formation in sandy soils as compared to the loam and clay textured soils. Use of DMPP with an N fertilizer results in a soil pH decrease and can be an option to increase the efficiency of the N‐conversion rate, reducing N losses in soil. Overall, our results suggest that NIs have a better performance in reducing N -NO 3-formation in sandy soils as compared to that of the loam and clay textured soils. Use of DMPP with ASN results in a soil pH decrease and can be an option to reduce N losses in soil.