Full TGIF Record # 34689
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Web URL(s):http://www.tandfonline.com/doi/pdf/10.1080/00103629409369265
    Last checked: 01/26/2018
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Publication Type:
i
Report
Author(s):Hue, N. V.; Ikawa, H.; Silva, J. A.
Author Affiliation:Department of Agronomy and Soil Science, College of Tropical Agriculture and Human Resources, University of Hawaii, Honolulu, HI 96822
Title:Increasing plant-available phosphorus in an ultisol with a yard-waste compost
Source:Communications in Soil Science and Plant Analysis. Vol. 25, No. 19/20, 1994, p. 3291-3303.
# of Pages:13
Publishing Information:New York, NY: Marcel Dekker
Related Web URL:http://www.tandfonline.com/doi/abs/10.1080/00103629409369265
    Last checked: 01/26/2018
    Notes: Abstract
Keywords:TIC Keywords: Phosphorus; Yard waste; Composts; Soil amendments; Growing media; Calcium; Gypsum; Hydrated lime; Calcium chloride; Growth regulators; Tropical soils
Abstract/Contents:"Beneficial uses of a yard-waste compost as a soil amendment and plant-growth medium were evaluated on a highly weathered, acid soil (Ustic Kanhaplohumult), using corn (Zea mays L.) seedlings as a test crop. First, factors responsible for the soil's infertility were identified in a greenhouse experiment consisting of five phosphorus (P) rates (0, 75, 150, 300, and 600 mg/kg) with or without 1.0 g calcium (Ca)/g (2 tons Ca/ha) as gypsum (CaSO4·2H2O) or calcium hydroxide [Ca(OH)2]. At no or low P additions, severe growth restrictions (low dry matter production and shoot P concentration <0.10%) irrespective of the Ca amendments indicated that P deficiency was the most growth limiting factor in this tropical soil. Subsequently, P sorption isotherms were constructed for the soil, the compost, and soil:compost mixtures by equilibrating 1.0 g soil in 20 mL 0.001M calcium chloride (CaCl2) containing various P concentrations. The results showed that in the unamended state, the soil supported only 0.01 mg P/L, the compost 9.5 mg P/L, and the mixtures containing 25%, 50% or 75% compost by volume 0.04, 0.06, or 0.10 mg P/L in the soil solution, respectively. Approximately 300 mg P/kg must be added to the unamended soil to maintain 0.20 mg P/L in the soil solution. Finally, effects of the compost amendment were studied by growing corn in various volumetric mixtures contraining 0, 25, 50, 75, and 100% compost. Best growth was obtained when compost fractions were >75%, corresponding to approximately 0.20% P in the plant shoots and 40 mg/kg Mehlich-1-extractable P."
Language:English
References:17
Note:Tables
Graphs
See Also:Other items relating to: YARD
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hue, N. V., H. Ikawa, and J. A. Silva. 1994. Increasing plant-available phosphorus in an ultisol with a yard-waste compost. Commun. Soil. Sci. Plant Anal. 25(19/20):p. 3291-3303.
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http://www.tandfonline.com/doi/pdf/10.1080/00103629409369265
    Last checked: 01/26/2018
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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