Claim · model-written summary
Grass yields under the two N fertilizers were similar across pH 4·3 to 7·4.
- Treatment
- either N-fertilizere0
- Outcome
- Yields of 4 cuts of grasse0
- Direction
- similare0
- Qualifier
- from 4·3 to 7·4e0
LoliumNot reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yields of 4 cuts of grass given either N-fertilizer were similar over a pH range (in 0·01 M -CaCl 2 ) from 4·3 to 7·4.”
t0“ryegrass”
Title
Controlling soil pH with different N-fertilizers in experiments with ryegrass in pots
J. Bolton The Journal of Agricultural Science 1971. doi:10.1017/s0021859600064649
Other claims from this paper (4)
- Intervention effect Calcium nitrate increased pH of ryegrass-cropped soil.
- Intervention effect Ammonium nitrate decreased pH of ryegrass-cropped soil, especially at intermediate pH.
- Observation Soil pH changes above 7·2 and below 4·5 were small.
- Association Soil pH and N fertilizer form affected grass composition and nutrient uptake.