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M. A. Kashem, O. O. Akinremi and O. J. Racz, “Phosphorus Fractions in Soil Amended with Organic and Inorganic Phosphorus Sources,” Canadian Journal of Soil Science, Vol. 84, No. 1, 2004, pp. 83-90. doi:10.4141/S03-018

has been cited by the following article:

  • TITLE: Recovery of Soil Test Phosphorus from an Acidic Soil Amended with Organic and Inorganic Phosphorus

    AUTHORS: Farzana Rumi, Md. Abul Kashem, Khan Towhid Osman

    KEYWORDS: Extraction Methods; Organic Amendments; Phosphorus; Incubation

    JOURNAL NAME: Open Journal of Soil Science, Vol.2 No.4, December 31, 2012

    ABSTRACT: Information on soil test phosphorus (P) in soil treated with organic amendments is important to a sound management of manure additions to agricultural fields. This study compared the recovery of cow manure, chicken manure, city compost P relative to triple super phosphate P (TSP) for an acidic soil with different antecedent soil test P (STP). Phosphorus was added at rates of 0, 100, 200, 400 and 800 mg P kg-1 soil based on total P. The soil was incubated at field capacity for 1, 4, 8 and 16 weeks (wk) after which they were extracted using NaHCO3 (Olsen) Mehlich-3, Kelowna and Bray & Kurtz-1 extractants. Regardless of extractants, after 1 wk incubation, the highest STP source was the TSP and the least was the city compost. Soil Test P increased with the addition of amendments from different P sources. Among the amendments, soil test P in TSP amended soil gradually decreased but in the city compost amended soil slightly in- creased with incubation time, whereas the changes of soil test P with time in the cow and chicken manures amended soil was very negligible. Across the amendments and rates of P additions, the value of extractable P with Olsen was of 55 mg kg-1 (16%), with Mehlich-3 was of 112 mg kg-1 (32%), with Kelowna was of 88 mg kg-1 (24%) and with Bray & Kurtz was of 104 mg kg-1 (29% of total added P). The P extraction efficiency was in the order: NaHCO3 Kelowna