- 1-naphthaleneacetic acidPositive and negative results9 papers: 7 positive, 2 negative or no effect
- N-benzyladeninePositive and negative results8 papers: 5 positive, 3 negative or no effect
- 2,4-DPositive and negative results4 papers: 3 positive, 1 negative or no effect
- calcium atomPositive and negative results4 papers: 2 positive, 2 negative or no effect
- Gibberellic acidPositive and negative results3 papers: 2 positive, 1 negative or no effect
- magnesium atomPositive and negative results3 papers: 2 positive, 1 negative or no effect
- potassium chloridePositive and negative results2 papers: 1 positive, 1 negative or no effect
- (2-chloroethyl)phosphonic acidResults agree4 papers: 4 positive, 0 negative or no effect
- aluminium atomResults agree4 papers: 0 positive, 4 negative or no effect
- indole-3-butyric acidResults agree4 papers: 4 positive, 0 negative or no effect
- sucroseResults agree4 papers: 4 positive, 0 negative or no effect
- Pratylenchus brachyurusResults agree2 papers: 0 positive, 2 negative or no effect
- iron atomResults agree2 papers: 2 positive, 0 negative or no effect
- fertilizationPositive and negative results24 papers: 19 positive, 5 negative or no effect
- inoculationPositive and negative results10 papers: 6 positive, 4 negative or no effect
- classPositive and negative results5 papers: 3 positive, 2 negative or no effect
- otherPositive and negative results5 papers: 3 positive, 2 negative or no effect
- phosphorusPositive and negative results4 papers: 3 positive, 1 negative or no effect
- applicationPositive and negative results3 papers: 2 positive, 1 negative or no effect
- intercroppingPositive and negative results3 papers: 1 positive, 2 negative or no effect
- mycorrhizaPositive and negative results3 papers: 2 positive, 1 negative or no effect
- coldPositive and negative results2 papers: 1 positive, 1 negative or no effect
- cultivation systemPositive and negative results2 papers: 1 positive, 1 negative or no effect
- limePositive and negative results2 papers: 1 positive, 1 negative or no effect
- phPositive and negative results2 papers: 1 positive, 1 negative or no effect
- processingPositive and negative results2 papers: 1 positive, 1 negative or no effect
- nitrogenResults agree10 papers: 10 positive, 0 negative or no effect
- growing mediumResults agree8 papers: 8 positive, 0 negative or no effect
- mulchingResults agree7 papers: 7 positive, 0 negative or no effect
- potassiumResults agree6 papers: 6 positive, 0 negative or no effect
- in vitroResults agree5 papers: 5 positive, 0 negative or no effect
- irrigationResults agree3 papers: 3 positive, 0 negative or no effect
- co2Results agree2 papers: 2 positive, 0 negative or no effect
- herbicideResults agree2 papers: 2 positive, 0 negative or no effect
- lightResults agree2 papers: 2 positive, 0 negative or no effect
- salinityResults agree2 papers: 0 positive, 2 negative or no effect
- shadeResults agree2 papers: 2 positive, 0 negative or no effect
- storageResults 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.