Arid
DOI10.1080/03650340.2011.559227
Kinetics of nutrient release from different organic residues using a laboratory system
Kolahchi, Zahra; Jalali, Mohsen
通讯作者Jalali, Mohsen
来源期刊ARCHIVES OF AGRONOMY AND SOIL SCIENCE
ISSN0365-0340
EISSN1476-3567
出版年2012
卷号58期号:9页码:1013-1031
英文摘要

Organic residues play a vital role in maintaining soil fertility in arid and semi-arid regions. Knowledge of the nutrient release from organic residues will help in optimizing nutrient efficiency in agricultural crop production systems. This study was conducted to assess the continuous release of phosphorus (P), potassium (K), calcium (Ca) and magnesium (Mg) from eight different organic residues (sheep manure, beet, waste material, rape, poultry manure, sunflower, potato and garlic) using successive extractions with distilled water. The residues were shaken for 1 h and equilibrated for longer intervals (1, 3.5, 18, 42, 72, 192, 768, 1248, 1608, 1968 and 2328 h) with successive extractions. Cumulative nutrient release curves by different organic residues versus time showed an initial rapid phase followed by a slow phase. The average percentage of nutrients released and the average release rate of nutrients found using a power model was different and were in the order K > P > Ca > Mg and Ca > Mg > P > K, respectively. According to MINTEQ software, the partitioning of total P between HPO42- and H2PO4- is sensitive to the type of organic residue. On average (pooled over all extractions), between 13% (rape) to 40% (poultry) and 27% (poultry manure) to 79% (beet) of total P in aqueous solutions present as HPO42- and H2PO4-, respectively. Among the various organic residues and in the first stage of release, sunflower residue, beet residue, poultry manure and garlic residue had the highest rate constant for Ca, Mg, P and K, respectively, indicating the high potential availability of these nutrients in the early stage of application to soils.


英文关键词organic residues release kinetic kinetic models speciation
类型Article
语种英语
国家Iran
收录类别SCI-E
WOS记录号WOS:000307189400007
WOS关键词PHOSPHORUS AVAILABILITY ; POTASSIUM RELEASE ; LEAF-LITTER ; DECOMPOSITION RATES ; PLANT RESIDUES ; CROP RESIDUES ; SOIL ; CARBON ; WASTE ; ECOSYSTEMS
WOS类目Agronomy ; Soil Science
WOS研究方向Agriculture
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/171332
作者单位Bu Ali Sina Univ, Dept Soil Sci, Coll Agr, Hamadan, Iran
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Kolahchi, Zahra,Jalali, Mohsen. Kinetics of nutrient release from different organic residues using a laboratory system[J],2012,58(9):1013-1031.
APA Kolahchi, Zahra,&Jalali, Mohsen.(2012).Kinetics of nutrient release from different organic residues using a laboratory system.ARCHIVES OF AGRONOMY AND SOIL SCIENCE,58(9),1013-1031.
MLA Kolahchi, Zahra,et al."Kinetics of nutrient release from different organic residues using a laboratory system".ARCHIVES OF AGRONOMY AND SOIL SCIENCE 58.9(2012):1013-1031.
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