Availability of sulfur in fly ash to plants
Fly ash from a coal-fired power plant was added to soil in variable amounts and the availability of sulfur to a variety of plant species from this source was compared to that of gypsum. The study was conducted under greenhouse conditions with a calcareous and two acid soils which were low in plant-available sulfur. The fly ash used contained 0.4% S, all of which is extractable by NH/sub 4/OAc. When mixed with a calcareous and an acid soil at rates of 1 to 2% by weight, the fly ash corrected a S deficiency in the soil and maximized the yield of alfalfa (Medicago sativa L.) and bermudagrass (Cynodon dactylon L.). The increase in yield (twofold to threefold in alfalfa and 40 to 70% in bermudagrass) was accompanied by an increase in the S content of the plant tops from a deficiency level (<0.1%) to a sufficiency level (greater than or equal to 0.2%). The availability of fly ash-S and gypsum (CaSO/sub 4/ . 2H/sub 2/O)-S was compared by the addition of equal amounts of S from the two sources (25-, 50-, and 100-mg S/kg soil) to an acid soil. Yield and S content of turnip (Brassica rapa L.) and white clover (Trifolium repens L.) were equally improved, demonstrating that the availability of fly ash derived-S is equivalent to that of gympsum-S.
- Research Organization:
- Univ. of California, Riverside
- OSTI ID:
- 6658746
- Journal Information:
- J. Environ. Qual.; (United States), Vol. 7:1; Conference: American Society of Agronomy meeting, Houston, TX, USA, Nov 1976
- Country of Publication:
- United States
- Language:
- English
Similar Records
Biodegradation of polycyclic aromatic hydrocarbons in rhizosphere soil
Forage lignins: isolation, characterization and degradation in the gastrointestinal trace of ruminants
Related Subjects
FLY ASH
WASTE PRODUCT UTILIZATION
SULFUR
BIOLOGICAL ACCUMULATION
AGRICULTURE
AIR POLLUTION
ALFALFA
BIOLOGICAL EFFECTS
BRASSICA
CLOVER
COAL
FOSSIL-FUEL POWER PLANTS
GRASS
GREENHOUSES
GYPSUM
MINERAL CYCLING
NUTRITION
PLANTS
SOILS
UPTAKE
AEROSOL WASTES
ALKALINE EARTH METAL COMPOUNDS
BIOMASS
BUILDINGS
CALCIUM COMPOUNDS
CALCIUM SULFATES
CARBONACEOUS MATERIALS
ELEMENTS
ENERGY SOURCES
FOOD
FOSSIL FUELS
FUELS
LEGUMINOSAE
MINERALS
NONMETALS
OXYGEN COMPOUNDS
POLLUTION
POWER PLANTS
RENEWABLE ENERGY SOURCES
SULFATES
SULFUR COMPOUNDS
THERMAL POWER PLANTS
VEGETABLES
WASTES
010800* - Coal
Lignite
& Peat- Waste Management
010900 - Coal
Lignite
& Peat- Environmental Aspects