- spermidinePositive and negative results6 papers: 5 positive, 1 negative or no effect
- molybdenum atomPositive and negative results4 papers: 3 positive, 1 negative or no effect
- gamma-aminobutyric acidResults agree4 papers: 4 positive, 0 negative or no effect
- chitosanResults agree2 papers: 2 positive, 0 negative or no effect
- mercury dichlorideResults agree2 papers: 2 positive, 0 negative or no effect
- spermineResults agree2 papers: 2 positive, 0 negative or no effect
- grazingPositive and negative results10 papers: 5 positive, 5 negative or no effect
- droughtPositive and negative results8 papers: 1 positive, 7 negative or no effect
- nitrogenPositive and negative results8 papers: 3 positive, 5 negative or no effect
- pruningPositive and negative results7 papers: 4 positive, 3 negative or no effect
- fertilizationPositive and negative results6 papers: 2 positive, 4 negative or no effect
- inoculationPositive and negative results6 papers: 4 positive, 2 negative or no effect
- phosphorusPositive and negative results6 papers: 5 positive, 1 negative or no effect
- applicationPositive and negative results4 papers: 3 positive, 1 negative or no effect
- in vitroPositive and negative results3 papers: 1 positive, 2 negative or no effect
- rotationPositive and negative results3 papers: 1 positive, 2 negative or no effect
- co2Positive and negative results2 papers: 1 positive, 1 negative or no effect
- herbicidePositive and negative results2 papers: 1 positive, 1 negative or no effect
- lightPositive and negative results2 papers: 1 positive, 1 negative or no effect
- loss of functionPositive and negative results2 papers: 1 positive, 1 negative or no effect
- mycorrhizaResults agree4 papers: 4 positive, 0 negative or no effect
- overexpressionResults agree3 papers: 3 positive, 0 negative or no effect
- uvResults agree3 papers: 3 positive, 0 negative or no effect
- salinityResults agree2 papers: 0 positive, 2 negative or no effect
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.