fertilization · Growth · Populus trichocarpa (black cottonwood)
9 claims from these papers.
Papers here report positive and negative or no-effect results. No pair of them has been accepted in the claim-by-claim check.
How these papers cite each other
None of these papers cites another one here.
- Positive result
- Negative result or no effect
- Citation, pointing to the cited paper
- Citation across the two sides
- Larger circle: more citations overall
Years run left to right. Citations come from the papers’ OpenAlex reference lists. Hover a paper to bring forward its citations; click it to open the paper.
Papers reporting a positive result 4
A Test of Close-Spaced, Short-Rotation Culture of Black Cottonwood · 1972
- positive
- no effect
Growth and nutrient relations in black cottonwood in South-Coastal British Columbia · 2008
- positive
- positive
Optimum fertilization of hybrid poplar plantations in coastal British Columbia · 2009
- positive
- positive
Papers reporting a negative result or no effect 1
Effects of Direct Application of Fertilizers and Hydrogel on the Establishment of Poplar Cuttings · 2014
- negative
- negative
- negative
A paper is on the positive side when any of its claims here is positive. Claims are grouped by organism, treatment and what was measured or targeted. Claims that compare genotypes are left out; a claim about lacking a nutrient counts the other way round in that nutrient’s question. “Results differ” marks a question where two model reviewers, reading both claims, accepted at least one pair of papers whose results differ.