Claim · model-written summary
Under continuous cropping soil nitrate-N increased.
- Taxon
- BARLEY
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Hordeum vulgaret0 - Treatment
- continuous croppinge0
- Outcome
- osil NO 3 -Ne0
- Direction
- increasede0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
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Verbatim
e0“Under continuous cropping, the osil NO 3 -N increased”
t0“BARLEY”
Title
EFFECTS OF GROWING BARLEY CONTINUOUSLY ON YIELDS, CHEMICAL CONSTITUENTS, AND DISEASE PREVALENCE
R. V. CLARK; A. R. MACK Canadian Journal of Plant Science 1974. doi:10.4141/cjps74-048
Other claims from this paper (9)
- Intervention effect Seed and forage yields of three barley cultivars grown on the same land for 4 yr after fallow without fertilizer declined annually by 12-15%.
- Observation Yield decline in continuous barley also occurred with moderate to high fertilization in high yielding years but not in low yielding years.
- Observation Under continuous cropping soil pH and NaHCO3-extractable P remained at the same general level.
- Observation Under continuous cropping soil exchangeable K decreased.
- Observation The yield decrease after the first barley crop on fallow land was generally accompanied by decreased foliage N and K concentration.
- Observation The yield decrease after the first barley crop was accompanied by some increase in foliage P concentration.
- Observation Disease prevalence varied each year and, with the possible exception of leaf spot caused by Cochliobolus sativus, did not increase with continuous cropping.
- Observation Loose smut increased rapidly for 2 yr on the barley cultivar York and then decreased.
- Association Loose smut appeared to be affected more by weather conditions than by the number of years in continuous barley.