Claim · model-written summary
Yield parameters and the amounts of nitrate N produced were not significantly related to the total, hexosamine, NH 4 or amino acid N forms or to individual amino acids in the soils.
- Taxon
- oats
Avena sativae2 - Compound
- total, hexosamine, NH 4 or amino acid N formse1
- Outcome
- yield parameters and the amounts of nitrate N producede1
Not reportedMaterialGeneOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“These yield parameters and the amounts of nitrate N produced were not related significantly to total, hexosamine, NH 4 or amino acid N forms or to individual amino acids in the soils”
e2“This positive effect of the organic amendments on yield was confirmed in a greenhouse experiment with oats”
Title
EFFECT OF LONG-TERM ADDITIONS OF ORGANIC MATTER ON CROP YIELDS AND SOIL PROPERTIES
R. L. Halstead; F. J. Sowden Canadian Journal of Soil Science 1968. doi:10.4141/cjss68-046
Other claims from this paper (10)
- Intervention effect Annual additions of organic materials for 20 years tended to increase mean crop yields in the field.
- Intervention effect Organic amendments had a positive effect on oat yield in a greenhouse experiment.
- Intervention effect Straw, alfalfa, leaves and manure additions had the greatest effect on oat yield and on N and P uptake.
- Intervention effect Amendments usually increased total C and N in the soil slightly compared with untreated samples.
- Intervention effect Amendments usually increased nitrate production capacity and exchange capacity of the soils.
- Intervention effect Amendments usually increased exchangeable and water-soluble Ca, Mg and K in the soils.
- Intervention effect Amendments usually increased phosphatase enzyme activity of the soils.
- Intervention effect Effect of amendments on soil P was less consistent than on the other soil properties.
- Intervention effect In most instances, amendments increased the aggregate stability of the clay soil.
- Association Only the nitrate N released during a two-week incubation was significantly correlated with oat yield and N uptake in the greenhouse experiment.