- boron atomPositive and negative results3 papers: 2 positive, 1 negative or no effect
- 1-methylcyclopropenePositive and negative results2 papers: 1 positive, 1 negative or no effect
- ammonium sulfatePositive and negative results2 papers: 1 positive, 1 negative or no effect
- magnesium atomResults agree5 papers: 5 positive, 0 negative or no effect
- silicon atomResults agree4 papers: 4 positive, 0 negative or no effect
- zinc atomResults agree3 papers: 3 positive, 0 negative or no effect
- AzospirillumResults agree2 papers: 2 positive, 0 negative or no effect
- aluminium atomResults agree2 papers: 0 positive, 2 negative or no effect
- calcium atomResults agree2 papers: 2 positive, 0 negative or no effect
- phosphateResults agree2 papers: 2 positive, 0 negative or no effect
- fertilizationPositive and negative results41 papers: 36 positive, 5 negative or no effect
- inoculationPositive and negative results13 papers: 12 positive, 1 negative or no effect
- nitrogenPositive and negative results11 papers: 8 positive, 3 negative or no effect
- irrigationPositive and negative results10 papers: 7 positive, 3 negative or no effect
- potassiumPositive and negative results7 papers: 6 positive, 1 negative or no effect
- intercroppingPositive and negative results4 papers: 2 positive, 2 negative or no effect
- limePositive and negative results3 papers: 2 positive, 1 negative or no effect
- mulchingPositive and negative results3 papers: 1 positive, 2 negative or no effect
- cultivation systemPositive and negative results2 papers: 1 positive, 1 negative or no effect
- otherPositive and negative results2 papers: 1 positive, 1 negative or no effect
- applicationResults agree6 papers: 6 positive, 0 negative or no effect
- mycorrhizaResults agree5 papers: 5 positive, 0 negative or no effect
- infectionResults agree3 papers: 3 positive, 0 negative or no effect
- salinityResults agree3 papers: 0 positive, 3 negative or no effect
- stageResults agree3 papers: 3 positive, 0 negative or no effect
- biocontrolResults agree2 papers: 2 positive, 0 negative or no effect
- organicResults 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.