Claim · model-written summary
Zn concentration in corn reached 792 ppm.
- Taxon
- corn
Zea mays subsp. mayse0 - Outcome
- concentration of Zne0
- Value
- 792 ppme0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The concentration of Zn reached levels of 792 ppm in the corn and 702 ppm in the alfalfa”
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 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 1 M MgCl2 (r = +0.93).
- 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.