Use of yard trimmings compost for restoration of saline soil incineration ash

Richard Charles Stehouwer, Kirsten Macneal

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Removal of organic contaminants from soil by high temperature (circa 900°C) incineration also destroys soil structure, removes all soil organic matter, sterilizes the soil, removes some fine particulates, alters the crystalline structure of soil clay minerals, and adds salts and alkalinity. The resulting soil ash is incapable of supporting plant life, and revegetation is usually done by covering with borrow soil material. A greenhouse experiment was conducted to determine if restoration of saline, alkaline soil incineration ash was possible by amendment with yard trimmings compost and chemical fertilizer. Ash was placed in pots (40 cm tall by 18.5 cm diam) and was mixed to depths of 15 to 30 cm with four rates of compost and NPK fertilizer. Pots were moistened to field capacity, and after two weeks were planted with birdsfoot trefoil (Lotus corniculatus) and tall fescue (Festuca arundinacea). During the 22 week experiment, pots were watered daily to meet plant needs, were leached four times by application of 4 cm of water, and were harvested four times. Seedling establishment and plant yield were measured, and chemical analysis was conducted on leachates and soil. Salinity limited plant establishment and early growth, both of which were improved by compost. Soil electrical conductance (EC) was decreased by leaching, but compost did not decrease either soil or leachate EC. Compost increased final soil organic C, and CEC which appeared to account for the large yield response to compost and a strong positive compost × fertilizer yield interaction. Compost greatly increased NO3 in the first leachates indicating a potential for groundwater contamination with application of large amounts of compost to soil ash. This experiment demonstrated that sustained plant growth could be achieved on soil incineration ash by amendment with yard trimmings compost and fertilizer.

Original languageEnglish (US)
Pages (from-to)51-60
Number of pages10
JournalCompost Science and Utilization
Volume11
Issue number1
DOIs
StatePublished - Jan 1 2003

Fingerprint

yard waste composts
saline soil
saline soils
incineration
compost
ash
composts
soil
leachates
Lotus corniculatus
leachate
fertilizers
Festuca arundinacea
fertilizer
restoration
alkaline soils
NPK fertilizers
plant establishment
groundwater contamination
land restoration

All Science Journal Classification (ASJC) codes

  • Ecology
  • Waste Management and Disposal
  • Soil Science

Cite this

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abstract = "Removal of organic contaminants from soil by high temperature (circa 900°C) incineration also destroys soil structure, removes all soil organic matter, sterilizes the soil, removes some fine particulates, alters the crystalline structure of soil clay minerals, and adds salts and alkalinity. The resulting soil ash is incapable of supporting plant life, and revegetation is usually done by covering with borrow soil material. A greenhouse experiment was conducted to determine if restoration of saline, alkaline soil incineration ash was possible by amendment with yard trimmings compost and chemical fertilizer. Ash was placed in pots (40 cm tall by 18.5 cm diam) and was mixed to depths of 15 to 30 cm with four rates of compost and NPK fertilizer. Pots were moistened to field capacity, and after two weeks were planted with birdsfoot trefoil (Lotus corniculatus) and tall fescue (Festuca arundinacea). During the 22 week experiment, pots were watered daily to meet plant needs, were leached four times by application of 4 cm of water, and were harvested four times. Seedling establishment and plant yield were measured, and chemical analysis was conducted on leachates and soil. Salinity limited plant establishment and early growth, both of which were improved by compost. Soil electrical conductance (EC) was decreased by leaching, but compost did not decrease either soil or leachate EC. Compost increased final soil organic C, and CEC which appeared to account for the large yield response to compost and a strong positive compost × fertilizer yield interaction. Compost greatly increased NO3− in the first leachates indicating a potential for groundwater contamination with application of large amounts of compost to soil ash. This experiment demonstrated that sustained plant growth could be achieved on soil incineration ash by amendment with yard trimmings compost and fertilizer.",
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Use of yard trimmings compost for restoration of saline soil incineration ash. / Stehouwer, Richard Charles; Macneal, Kirsten.

In: Compost Science and Utilization, Vol. 11, No. 1, 01.01.2003, p. 51-60.

Research output: Contribution to journalArticle

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