Utilization of fluidized bed material as a calcium and sulfur source for apples
Fluidized bed material (FBM), a dry, high Ca, alkaline waste product which results from combining coal and limestone, was used as a Ca or S source or lime substitute in an established apple orchard (Malus domestica Borkh., cv. York Imperial) over a four year period. Treatment comparisons were made between FBM was applied at one or two times (1x or 2x) the soil lime requirement and CaCO/sub 3/ applied at the lime requirement (1x). Additionally, FBM 1x was compared to a combination treatment consisting of CaCO/sub 3/ plus gypsum to apply similar amounts of Ca and S. All treatments were also compared to an untreated control. No significant treatment comparisons were noted on leaf Ca levels, however, leaf Mg significantly decreased when FBM applied at the 1x or 2x level compared to CaCO/sub 3/ 1x. When FBM was compared with CaCO/sub 3/ plus gypsum there was a significant decrease in leaf Ca with FBM but no difference in leaf Mg. These effects were probably due to either a solubility difference between nutrients or to actual amount of Mg applied by the different sources. Leaf S levels were unaffected by treatments. Yields, fresh fruit weight and the incidence of cork spot were little affected by treatments. Soil extractable Mg, 1N NH/sub 4/Ac, was not a good prediction of leaf Mg content or Mg added to the soil. Only soil Al was significantly reduced, compared to the control, by the treatments among the metals studied (Zn, Mn, Cu, Cd, Pb and Al). FBM applied at twice the lime requirement (wt. basis) resulted in similar soil pH to CaCO/sub 3/ applied at the lime requirement. 14 references, 6 figures, 1 table.
- Research Organization:
- Dept. of Agriculture, Beltsville, MD
- OSTI ID:
- 6094484
- Journal Information:
- Commun. Soil Sci. Plant Anal.; (United States), Vol. 15:8
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
FLUIDIZED-BED COMBUSTORS
WASTE PRODUCT UTILIZATION
LEAVES
CHEMICAL ANALYSIS
SOILS
LIMING
SOLID WASTES
RECYCLING
ALUMINIUM
APPLES
CADMIUM
CALCIUM
CALCIUM CARBONATES
COMPARATIVE EVALUATIONS
COPPER
EXPERIMENTAL DATA
FRUIT TREES
GROUND DISPOSAL
GYPSUM
LEAD
MAGNESIUM
MANGANESE
NUTRIENTS
PH VALUE
SULFUR
ZINC
ALKALINE EARTH METAL COMPOUNDS
ALKALINE EARTH METALS
CALCIUM COMPOUNDS
CALCIUM SULFATES
CARBON COMPOUNDS
CARBONATES
COMBUSTORS
DATA
ELEMENTS
FOOD
FRUITS
INFORMATION
MANAGEMENT
METALS
MINERALS
NONMETALS
NUMERICAL DATA
OXYGEN COMPOUNDS
PLANTS
SULFATE MINERALS
SULFATES
SULFUR COMPOUNDS
TRANSITION ELEMENTS
TREES
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES
560303* - Chemicals Metabolism & Toxicology- Plants- (-1987)
010800 - Coal
Lignite
& Peat- Waste Management