Investigation on the utilization of coal fly ash as amendment to compost for vegetation in acid soil. Technical terminal report
Application of fly ash-amended composts as manure enhances the crop yield of certain plants like corn, sorghum, collard and mustard greens. Organic compost made out of grass and leaves (home-made) is better than the commercial composts for amendment with fly ash. A 20--40% fly ash in the amended compost and a soil to ash-amended compost ratio of 3:1 are recommended for making bed for plantation. Organic compost mixed with fly ash, due to reduced porosity, will help the bed to retain water and conserve water supply to plants. Organic compost will release to the manure additional quantities of N, P, and S that are not substantially available in fly ash. It appears that chemical reaction and/or mineralization occurs during composting of fly ash with organic manure to release more N, P, K and S to the system. Potassium is more elevated in all plants grown in potted soil treated with fly ash-amended compost than in those grown in soil or soil treated with organic manure. Contrary to expectation Ca in fly ash is not effectively used by plants as the latter treated with ash- amended compost is not rich in Ca. This suggests that Ca may be tied up as insoluble CaSO{sub 4} in the manure so that it may not be bioavailable to the plant. Uptake of boron by bean, bell pepper and egg plant is considerably higher than that absorbed by corn, sorghum and greens resulting in poor yield for the former.
- Research Organization:
- Savannah State Coll., GA (United States). Dept. of Chemistry
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG09-88SR18047
- OSTI ID:
- 10145619
- Report Number(s):
- DOE/SR/18047-3; ON: DE92013685
- Resource Relation:
- Other Information: PBD: 1 Aug 1991
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
60 APPLIED LIFE SCIENCES
FLY ASH
WASTE PRODUCT UTILIZATION
COMPOST
CHEMICAL COMPOSITION
NUTRIENTS
UPTAKE
PROGRESS REPORT
FOSSIL-FUEL POWER PLANTS
POTASSIUM
NITROGEN
PHOSPHORUS
SULFUR
BORON
GRAMINEAE
LEAVES
MAIZE
SORGHUM
200200
553006
WASTE MANAGEMENT
OTHER AGRICULTURAL APPLICATIONS