- calcium atomPositive and negative results12 papers: 9 positive, 3 negative or no effect
- zinc atomPositive and negative results4 papers: 3 positive, 1 negative or no effect
- boron atomPositive and negative results3 papers: 2 positive, 1 negative or no effect
- calcium chloride dihydratePositive and negative results3 papers: 2 positive, 1 negative or no effect
- iron atomPositive and negative results3 papers: 2 positive, 1 negative or no effect
- Gibberellic acidPositive and negative results2 papers: 1 positive, 1 negative or no effect
- cadmium atomPositive and negative results2 papers: 1 positive, 1 negative or no effect
- molybdenum atomPositive and negative results2 papers: 1 positive, 1 negative or no effect
- salicylic acidResults agree11 papers: 11 positive, 0 negative or no effect
- selenium atomResults agree6 papers: 6 positive, 0 negative or no effect
- silicon atomResults agree5 papers: 5 positive, 0 negative or no effect
- sodium chlorideResults agree4 papers: 0 positive, 4 negative or no effect
- potassium nitrateResults agree3 papers: 3 positive, 0 negative or no effect
- AzotobacterResults agree2 papers: 2 positive, 0 negative or no effect
- ChlorellaResults agree2 papers: 2 positive, 0 negative or no effect
- calcium dichlorideResults agree2 papers: 2 positive, 0 negative or no effect
- zinc oxideResults agree2 papers: 2 positive, 0 negative or no effect
- fertilizationPositive and negative results61 papers: 45 positive, 16 negative or no effect
- applicationPositive and negative results20 papers: 19 positive, 1 negative or no effect
- nitrogenPositive and negative results15 papers: 12 positive, 3 negative or no effect
- otherPositive and negative results15 papers: 12 positive, 3 negative or no effect
- mycorrhizaPositive and negative results7 papers: 5 positive, 2 negative or no effect
- co2Positive and negative results5 papers: 3 positive, 2 negative or no effect
- irrigationPositive and negative results5 papers: 3 positive, 2 negative or no effect
- lightPositive and negative results5 papers: 4 positive, 1 negative or no effect
- mulchingPositive and negative results5 papers: 4 positive, 1 negative or no effect
- cultivation systemPositive and negative results4 papers: 3 positive, 1 negative or no effect
- biocharPositive and negative results3 papers: 2 positive, 1 negative or no effect
- classPositive and negative results2 papers: 1 positive, 1 negative or no effect
- densityPositive and negative results2 papers: 1 positive, 1 negative or no effect
- in vitroPositive and negative results2 papers: 1 positive, 1 negative or no effect
- ozonePositive and negative results2 papers: 1 positive, 1 negative or no effect
- inoculationResults agree16 papers: 16 positive, 0 negative or no effect
- salinityResults agree12 papers: 0 positive, 12 negative or no effect
- growing mediumResults agree7 papers: 7 positive, 0 negative or no effect
- nanoparticleResults agree5 papers: 5 positive, 0 negative or no effect
- potassiumResults agree5 papers: 5 positive, 0 negative or no effect
- solarizationResults agree5 papers: 5 positive, 0 negative or no effect
- altitudeResults agree2 papers: 0 positive, 2 negative or no effect
- botanicalResults agree2 papers: 2 positive, 0 negative or no effect
- processingResults 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.