Simple Formulation of the Soil Water Effect on Residue Decomposition

Autor:	G. N. Dowuona, N. K. Amon, James W. Jones, Samuel G.K. Adiku, E. K. Nartey, F. K. Kumaga, T. A. Adjadeh
Rok vydání:	2010
Předmět:	Field capacity Residue decomposition Chemistry Environmental chemistry Soil water Analytical chemistry Soil Science chemistry.chemical_element Agronomy and Crop Science Nitrogen Water content
Zdroj:	Communications in Soil Science and Plant Analysis. 41:267-276
ISSN:	1532-2416 0010-3624
Popis:	Soil water content, θ, is a major factor affecting residue decomposition, but simple formulation of this factor is often lacking. We observed that θ significantly (P 30 and C/N < 25, respectively. A θ factor was formulated in terms of the field capacity θ FC and the air‐dry θ d in the form f w = (θ − θ d) / (θ FC − θ d), and this was used to modify the potential k d as θ varied. Coupling f w with a first‐order residue decomposition equation resulted in the prediction of the decomposition of four residue types in the greenhouse (R2 = 0.94; relative root mean square error, RRMSE, = 0.06) and in the field (R2 = 0.93; RRMSE = 0.11).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ca8a01b89865f4e18921a241be5b7216 https://doi.org/10.1080/00103620903460781 Zobrazit plný text záznamu