- salicylic acidPositive and negative results37 papers: 34 positive, 3 negative or no effect
- ethenePositive and negative results30 papers: 16 positive, 14 negative or no effect
- (+)-abscisic acidPositive and negative results20 papers: 16 positive, 4 negative or no effect
- (-)-methyl jasmonatePositive and negative results19 papers: 15 positive, 4 negative or no effect
- sodium chloridePositive and negative results12 papers: 6 positive, 6 negative or no effect
- Trichoderma harzianumPositive and negative results8 papers: 7 positive, 1 negative or no effect
- calcium atomPositive and negative results8 papers: 5 positive, 3 negative or no effect
- nitric oxidePositive and negative results8 papers: 3 positive, 5 negative or no effect
- (2-chloroethyl)phosphonic acidPositive and negative results7 papers: 4 positive, 3 negative or no effect
- jasmonic acidPositive and negative results7 papers: 5 positive, 2 negative or no effect
- silicon atomPositive and negative results7 papers: 6 positive, 1 negative or no effect
- CoronatinePositive and negative results6 papers: 3 positive, 3 negative or no effect
- hydrogen peroxidePositive and negative results6 papers: 5 positive, 1 negative or no effect
- 3-aminobutanoic acidPositive and negative results5 papers: 3 positive, 2 negative or no effect
- Bacillus velezensisPositive and negative results5 papers: 3 positive, 2 negative or no effect
- Botrytis cinereaPositive and negative results5 papers: 3 positive, 2 negative or no effect
- 1-methylcyclopropenePositive and negative results4 papers: 1 positive, 3 negative or no effect
- indole-3-acetic acidPositive and negative results4 papers: 2 positive, 2 negative or no effect
- 2,4-DPositive and negative results3 papers: 2 positive, 1 negative or no effect
- Meloidogyne javanicaPositive and negative results3 papers: 1 positive, 2 negative or no effect
- Pseudomonas syringaePositive and negative results3 papers: 1 positive, 2 negative or no effect
- calcium(2+)Positive and negative results3 papers: 2 positive, 1 negative or no effect
- hydrogen sulfidePositive and negative results3 papers: 2 positive, 1 negative or no effect
- iron atomPositive and negative results3 papers: 1 positive, 2 negative or no effect
- silver atomPositive and negative results3 papers: 2 positive, 1 negative or no effect
- 1-naphthaleneacetic acidPositive and negative results2 papers: 1 positive, 1 negative or no effect
- Nicotiana tabacumPositive and negative results2 papers: 1 positive, 1 negative or no effect
- calcium chloride dihydratePositive and negative results2 papers: 1 positive, 1 negative or no effect
- fusicoccinPositive and negative results2 papers: 1 positive, 1 negative or no effect
- potassium nitratePositive and negative results2 papers: 1 positive, 1 negative or no effect
- zinc atomPositive and negative results2 papers: 1 positive, 1 negative or no effect
- melatoninResults agree22 papers: 22 positive, 0 negative or no effect
- Gibberellic acidResults agree10 papers: 10 positive, 0 negative or no effect
- 5-aminolevulinic acidResults agree8 papers: 8 positive, 0 negative or no effect
- spermidineResults agree8 papers: 8 positive, 0 negative or no effect
- TrichodermaResults agree5 papers: 5 positive, 0 negative or no effect
- 24-epi-brassinolideResults agree4 papers: 4 positive, 0 negative or no effect
- L-ascorbic acidResults agree4 papers: 4 positive, 0 negative or no effect
- brassinolideResults agree4 papers: 4 positive, 0 negative or no effect
- chitosanResults agree4 papers: 4 positive, 0 negative or no effect
- glucoseResults agree4 papers: 4 positive, 0 negative or no effect
- selenium atomResults agree4 papers: 4 positive, 0 negative or no effect
- sodium nitroprussideResults agree4 papers: 4 positive, 0 negative or no effect
- sucroseResults agree4 papers: 4 positive, 0 negative or no effect
- trehaloseResults agree4 papers: 4 positive, 0 negative or no effect
- (aminooxy)acetic acidResults agree3 papers: 3 positive, 0 negative or no effect
- 1-aminocyclopropanecarboxylic acidResults agree3 papers: 3 positive, 0 negative or no effect
- Ascophyllum nodosumResults agree3 papers: 3 positive, 0 negative or no effect
- Bacillus subtilisResults agree3 papers: 3 positive, 0 negative or no effect
- Beauveria bassianaResults agree3 papers: 3 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.