- magnesium atomPositive and negative results5 papers: 4 positive, 1 negative or no effect
- jasmonic acidPositive and negative results4 papers: 3 positive, 1 negative or no effect
- aminoguanidinePositive and negative results2 papers: 1 positive, 1 negative or no effect
- cadmium atomPositive and negative results2 papers: 1 positive, 1 negative or no effect
- putrescinePositive and negative results2 papers: 1 positive, 1 negative or no effect
- trehalosePositive and negative results2 papers: 1 positive, 1 negative or no effect
- aluminium atomResults agree12 papers: 12 positive, 0 negative or no effect
- Glycine maxResults agree4 papers: 4 positive, 0 negative or no effect
- melatoninResults agree4 papers: 4 positive, 0 negative or no effect
- (-)-methyl jasmonateResults agree3 papers: 3 positive, 0 negative or no effect
- calcium atomResults agree3 papers: 3 positive, 0 negative or no effect
- 1-aminocyclopropanecarboxylic acidResults agree2 papers: 2 positive, 0 negative or no effect
- brassinolideResults agree2 papers: 2 positive, 0 negative or no effect
- etheneResults agree2 papers: 2 positive, 0 negative or no effect
- indole-3-acetic acidResults agree2 papers: 2 positive, 0 negative or no effect
- salicylic acidResults agree2 papers: 2 positive, 0 negative or no effect
- selenium atomResults agree2 papers: 2 positive, 0 negative or no effect
- zinc sulfateResults agree2 papers: 2 positive, 0 negative or no effect
- fertilizationPositive and negative results18 papers: 17 positive, 1 negative or no effect
- loss of functionPositive and negative results13 papers: 4 positive, 9 negative or no effect
- nitrogenPositive and negative results13 papers: 12 positive, 1 negative or no effect
- inoculationPositive and negative results11 papers: 10 positive, 1 negative or no effect
- lightPositive and negative results11 papers: 10 positive, 1 negative or no effect
- infectionPositive and negative results8 papers: 5 positive, 3 negative or no effect
- phosphorusPositive and negative results6 papers: 1 positive, 5 negative or no effect
- droughtPositive and negative results5 papers: 1 positive, 4 negative or no effect
- co2Positive and negative results3 papers: 1 positive, 2 negative or no effect
- classPositive and negative results2 papers: 1 positive, 1 negative or no effect
- coldPositive and negative results2 papers: 1 positive, 1 negative or no effect
- applicationResults agree12 papers: 12 positive, 0 negative or no effect
- mycorrhizaResults agree10 papers: 10 positive, 0 negative or no effect
- intercroppingResults agree6 papers: 6 positive, 0 negative or no effect
- shadeResults agree6 papers: 6 positive, 0 negative or no effect
- processingResults agree4 papers: 4 positive, 0 negative or no effect
- heatResults agree2 papers: 2 positive, 0 negative or no effect
- heavy metalResults agree2 papers: 0 positive, 2 negative or no effect
- nanoparticleResults agree2 papers: 2 positive, 0 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.