Claim · model-written summary
Maximum corn yield on subsoil required 35 more pounds of nitrogen per acre than on normal soil in 1958.
- Taxon
- corn
Zea mays subsp. mayse4 - Treatment
- nitrogene4
- Outcome
- production of maximum corn yields on subsoile4
- Direction
- moree4
- Value
- 35 more pounds of nitrogen per acree4
- Comparator
- normal soile4
- Setting
- 1958e4
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“the production of maximum corn yields on subsoil required 35 more pounds of nitrogen per acre in 1958 and 52 more pounds of nitrogen per acre in 1959 than on normal soil”
Title
O. P. Engelstad; W. D. Shrader Soil Science Society of America Journal 1961. doi:10.2136/sssaj1961.03615995002500060024x
Other claims from this paper (6)
- Intervention effect Equal corn yields could be obtained on surface soil and subsoil when adequate nitrogen fertilizer was supplied.
- Observation Maximum corn yields on subsoil and normal soils were about 100 bushels per acre in 1958.
- Observation Maximum corn yields on subsoil and normal soils were about 125 bushels per acre in 1959.
- Intervention effect Corn yields on subsoil control plots without nitrogen were 45 to 50 bushels per acre lower than on corresponding surface soil plots.
- Intervention effect Maximum corn yield on subsoil required 52 more pounds of nitrogen per acre than on normal soil in 1959.
- Observation Untreated surface soil supplied about 70 to 75 pounds of fertilizer nitrogen per acre per year more available nitrogen than untreated subsoil.