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An enhanced software tool to support better use of manure nutrients: MANNER ‐ NPK
Author(s) -
Nicholson F. A.,
Bhogal A.,
Chadwick D.,
Gill E.,
Gooday R. D.,
Lord E.,
Misselbrook T.,
Rollett A. J.,
Sagoo E.,
Smith K. A.,
Thorman R. E.,
Williams J. R.,
Chambers B. J.
Publication year - 2013
Publication title -
soil use and management
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.709
H-Index - 81
eISSN - 1475-2743
pISSN - 0266-0032
DOI - 10.1111/sum.12078
Subject(s) - manure , mineralization (soil science) , leaching (pedology) , nutrient , fertilizer , nitrogen , environmental science , nutrient management , ammonia volatilization from urea , manure management , agronomy , nutrient cycle , chemistry , soil water , soil science , biology , organic chemistry
MANNER ‐ NPK ( MAN ure Nutrient Evaluation Routine) is a decision support tool for quantifying manure (and other organic material) crop available nutrient supply. The user‐friendly design of an earlier version of MANNER was retained, but in response to user and stakeholder feedback, additional functionality was included to underpin new and revised nitrogen (N) transformation/loss modules (covering ammonia volatilization, nitrate leaching and nitrous oxide/di‐nitrogen emissions, and organic N mineralization) and also to estimate manure phosphorus (as P 2 O 5 ), potassium (as K 2 O), sulphur (as SO 3 ) and magnesium (as MgO) supply. Notably, MANNER ‐ NPK provides N availability estimates for following crops through the mineralization of organic N. Validation of the crop available N supply estimates was undertaken by comparing predicted values with data from more than 200 field experimental measurements. For cattle, pig and poultry manures, there was good agreement ( P < 0.001) between predicted and measured fertilizer N replacement values, indicating that MANNER ‐ NPK provides robust estimates of manure crop available N supply and N losses to the wider environment.