Nutrient release dynamics of an accelerated compost: A case study in an Alfisol and Ultisol
Abstract
Acceleration
of composting process could influence fertilizer-efficiency of the accelerated
composts. This study therefore evaluated the nutrient release dynamics of
different rates of a commercial accelerated compost (OBD-plus ) in two soils described as Alfisol and Ultisol,
under laboratory incubation study, in order to generate information for
simulation under field conditions. Accelerated compost (AC) at the rates of 30,
60, 90, 120, 150 kg N ha-1, mineral fertilizer (NPK 15-15-15) and
conventional compost (CC) at 60 kg N ha-1, were each mixed with 2 mm sieved soil (Alfisol and Ultisol) in
cups, and arranged in a completely randomised design with three replications.
Soils without amendment served as control. The treated soils were retrieved at
2, 4, 6, 8, 10 and 12 weeks of incubation (WOI), air dried and analysed for pH,
organic C, N, P and K, and data analysed using regression test. The results
revealed that the 60 kg N ha-1 AC improved the pH, OC, N. P, K by
-2%, 11%, 3%, 141% and 4% respectively, across the WOI, on the average of
performance in the two soils, comparable with mineral fertilizer (-5%, 8%, -1%,
76%, 4% respectively) and CC (11%, 40%, 3%, 773%, 10% respectively). The 60 kg
N ha-1 AC significantly correlated (p<0.05) with time of
incubation only with respect to P (0.934) and gave a similar nutrient release
pattern compared with mineral fertilizer and CC, in terms of C, N, P and K in
both soils. It therefore showed that the accelerated compost evaluated could
mineralize in a way similar to conventional compost and mineral fertilizers,
despite its shorter composting duration to maturity.
Keywords
References
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Details
Primary Language
English
Subjects
-
Journal Section
Research Article
Authors
Olufemi Emmanuel Ayanfeoluwa
This is me
Department of Agriculture, Federal College of Agriculture, Ibadan, Nigeria
Nigeria
Olugbenga Oluseyi Adeoluwa
This is me
Department of Agronomy, University of Ibadan, Ibadan, Nigeria
Nigeria
Vincent Oluwatomisin Aduramigba-modupe
This is me
Institute of Agricultural Research and Training, Ibadan, Nigeria
Nigeria
Publication Date
October 1, 2017
Submission Date
February 2, 2017
Acceptance Date
May 22, 2017
Published in Issue
Year 2017 Volume: 6 Number: 4
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