Claim · model-written summary
Mean weight concentrations of Zn in the three species correlated significantly and positively with Zn extracted with 1 M MgCl2 (r = +0.93).
- Taxon
- three speciese0
- Compound
- 1 M MgCl 2e0
- Outcome
- mean weight concentrations of Zne0
- Direction
- increaseinferrede0
- Value
- r = +0.93e0
Not reportedMaterialGeneOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingQualifier
Verbatim
e0“The mean weight concentrations of Zn in the three species were correlated significantly with the amounts of Zn extracted with 0.005 M DTPA (r = +0.73), 1 M MgCl 2 (r = +0.93)”
Title
EFFECTS OF SOIL PROPERTIES AND AMENDMENTS ON THE AVAILABILITY OF ZINC IN SOILS
A. J. MACLEAN Canadian Journal of Soil Science 1974. doi:10.4141/cjss74-050
Other claims from this paper (18)
- Intervention effect In a pot experiment the highest Zn rate (250 ppm) slightly reduced corn yield.
- Intervention effect The highest Zn rate (250 ppm) prevented the growth of lettuce in the pot experiment.
- Intervention effect The highest Zn rate (250 ppm) markedly reduced alfalfa yield in the pot experiment.
- Observation Zn concentration in corn reached 792 ppm.
- Observation Zn concentration in alfalfa reached 702 ppm.
- Intervention effect Addition of 50 ppm Zn to the acid soil restricted the growth of lettuce.
- Intervention effect Addition of 50 ppm Zn to the acid soil increased the Zn concentration in lettuce to 523 ppm.
- Association Zn concentrations in plants, as influenced by soil organic matter, organic amendments and liming, were usually in accord with the amounts of Zn extracted from the soils.
- Intervention effect P pretreatment of the soils tended to decrease the Zn concentration in corn.
- Intervention effect P pretreatment of the soils tended to decrease the Zn concentration in lettuce.
- Association Mean weight concentrations of Zn in the three species correlated significantly and positively with Zn extracted with 0.005 M DTPA (r = +0.73).
- Association Mean weight concentrations of Zn in the three species correlated significantly and positively with Zn extracted with 0.01 M CaCl2 (r = +0.90).
- Association Zn extracted with DTPA, MgCl2 and CaCl2 increased with soil organic matter content in a neutral sandy loam.
- Intervention effect Zn extracted with DTPA, MgCl2 and CaCl2 increased with alfalfa added as an organic amendment.
- Intervention effect Addition of muck and peat increased MgCl2-exchangeable Zn but decreased CaCl2-soluble Zn.
- Intervention effect Addition of clay increased exchangeable Zn but decreased Zn in the DTPA and CaCl2 extracts.
- Intervention effect Liming an acid sandy loam soil (pH 4.9) to about neutral markedly reduced extractable Zn.
- Intervention effect Pretreating the soils with phosphate almost invariably increased extractable Zn.