Macronutrient and boron ratios in tall fescue: relationship to yields on pyritic coal wastes
A previous greenhouse study had demonstrated that yield of tall fescue (Festuca arundinacea Schreb.) grown directly on a pyritic waste was not significantly different from yield on a soil despite low tissue concentrations of P and K in the waste-grown plants. In an attempt to explain this result, and to determine if this phenomenon was typical of such waste, a greenhouse study was carried out with pyritic waste from five disposal sites for coal-cleaning refuse in southern Illinois. The wastes and an agricultural soil (Eilliott silt loam: fine, illitic, mesic Aquic Arguidolls) were treated with limestone (to pH 6.5) and fertilizers. Yields of 8-week-old shoots of tall fescue grown on the wastes were significantly lower than yield of plants grown on the soil when the Ca/B ratio in the shoots was outside a range of 1.7 to 2.8 (where Ca/B is the ratio of log/sub 10/ concentrations of Ca and B expressed as microgram-atoms per gram dry matter). Within this range, yields were not significantly different from yield on the soil despite significantly lower concentrations of P and K in the shoots of the waste-grown plants. It is suggested that elemental interactions should not be ignored in reclamation of waste sites, particularly where ''trace'' element concentrations are either higher or lower than concentrations in typical soils. Results also suggest a P- and K-sparing effect of elevated B concentrations in tall fescue. 23 references.
- Research Organization:
- Northwestern Univ., Evanston, IL
- OSTI ID:
- 7096543
- Journal Information:
- J. Environ. Qual.; (United States), Vol. 13:2
- Country of Publication:
- United States
- Language:
- English
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01 COAL, LIGNITE, AND PEAT
BORON
QUANTITY RATIO
CALCIUM
COAL PREPARATION PLANTS
SOLID WASTES
GRASS
PRODUCTIVITY
POTASSIUM
WASTE PRODUCT UTILIZATION
LAND RECLAMATION
NUTRIENTS
PLANT GROWTH
ALKALI METALS
ALKALINE EARTH METALS
ELEMENTS
GROWTH
INDUSTRIAL PLANTS
METALS
PLANTS
SEMIMETALS
WASTES
560303* - Chemicals Metabolism & Toxicology- Plants- (-1987)
010800 - Coal
Lignite
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010900 - Coal
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& Peat- Environmental Aspects