- manganese atomPositive and negative results6 papers: 3 positive, 3 negative or no effect
- copper atomPositive and negative results5 papers: 3 positive, 2 negative or no effect
- calcium nitratePositive and negative results3 papers: 1 positive, 2 negative or no effect
- calcium oxidePositive and negative results3 papers: 1 positive, 2 negative or no effect
- Carthamus tinctoriusPositive and negative results2 papers: 1 positive, 1 negative or no effect
- Glycine maxPositive and negative results2 papers: 1 positive, 1 negative or no effect
- Helianthus annuusPositive and negative results2 papers: 1 positive, 1 negative or no effect
- Linum usitatissimumPositive and negative results2 papers: 1 positive, 1 negative or no effect
- Vicia villosaPositive and negative results2 papers: 1 positive, 1 negative or no effect
- calcium sulfatePositive and negative results2 papers: 1 positive, 1 negative or no effect
- cobalt atomPositive and negative results2 papers: 1 positive, 1 negative or no effect
- ethylenediaminetetraacetic acidPositive and negative results2 papers: 1 positive, 1 negative or no effect
- indole-3-acetic acidPositive and negative results2 papers: 1 positive, 1 negative or no effect
- oxidePositive and negative results2 papers: 1 positive, 1 negative or no effect
- zinc atomResults agree6 papers: 6 positive, 0 negative or no effect
- zinc sulfateResults agree5 papers: 5 positive, 0 negative or no effect
- iron atomResults agree4 papers: 4 positive, 0 negative or no effect
- sulfur atomResults agree3 papers: 3 positive, 0 negative or no effect
- 2,4-DResults agree2 papers: 0 positive, 2 negative or no effect
- cadmium atomResults agree2 papers: 0 positive, 2 negative or no effect
- cadmium sulfateResults agree2 papers: 0 positive, 2 negative or no effect
- calcium carbonateResults agree2 papers: 2 positive, 0 negative or no effect
- magnesium atomResults agree2 papers: 2 positive, 0 negative or no effect
- manganese(II) sulfateResults agree2 papers: 2 positive, 0 negative or no effect
- silicon atomResults agree2 papers: 2 positive, 0 negative or no effect
- sulfateResults agree2 papers: 2 positive, 0 negative or no effect
- fertilizationPositive and negative results40 papers: 31 positive, 9 negative or no effect
- nitrogenPositive and negative results30 papers: 24 positive, 6 negative or no effect
- applicationPositive and negative results13 papers: 11 positive, 2 negative or no effect
- inoculationPositive and negative results12 papers: 11 positive, 1 negative or no effect
- organicPositive and negative results7 papers: 5 positive, 2 negative or no effect
- intercroppingPositive and negative results6 papers: 5 positive, 1 negative or no effect
- lightPositive and negative results5 papers: 3 positive, 2 negative or no effect
- limePositive and negative results5 papers: 4 positive, 1 negative or no effect
- tillagePositive and negative results5 papers: 3 positive, 2 negative or no effect
- irrigationPositive and negative results4 papers: 3 positive, 1 negative or no effect
- phPositive and negative results4 papers: 3 positive, 1 negative or no effect
- sowing timePositive and negative results4 papers: 3 positive, 1 negative or no effect
- droughtPositive and negative results3 papers: 1 positive, 2 negative or no effect
- classPositive and negative results2 papers: 1 positive, 1 negative or no effect
- cover cropPositive and negative results2 papers: 1 positive, 1 negative or no effect
- floodingResults agree3 papers: 0 positive, 3 negative or no effect
- phosphorusResults agree3 papers: 3 positive, 0 negative or no effect
- alkalinityResults agree2 papers: 0 positive, 2 negative or no effect
- mycorrhizaResults agree2 papers: 2 positive, 0 negative or no effect
- otherResults agree2 papers: 2 positive, 0 negative or no effect
- pruningResults agree2 papers: 0 positive, 2 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.