- zinc atomPositive and negative results5 papers: 4 positive, 1 negative or no effect
- Oryza sativaPositive and negative results3 papers: 2 positive, 1 negative or no effect
- Arachis hypogaeaPositive and negative results2 papers: 1 positive, 1 negative or no effect
- Vigna unguiculataResults agree2 papers: 2 positive, 0 negative or no effect
- fertilizationPositive and negative results42 papers: 39 positive, 3 negative or no effect
- potassiumPositive and negative results6 papers: 5 positive, 1 negative or no effect
- phosphorusPositive and negative results4 papers: 3 positive, 1 negative or no effect
- rotationPositive and negative results3 papers: 2 positive, 1 negative or no effect
- climate sitePositive and negative results2 papers: 1 positive, 1 negative or no effect
- firePositive and negative results2 papers: 1 positive, 1 negative or no effect
- intercroppingPositive and negative results2 papers: 1 positive, 1 negative or no effect
- organicPositive and negative results2 papers: 1 positive, 1 negative or no effect
- processingPositive and negative results2 papers: 1 positive, 1 negative or no effect
- inoculationResults agree5 papers: 5 positive, 0 negative or no effect
- nitrogenResults agree5 papers: 5 positive, 0 negative or no effect
- mycorrhizaResults agree4 papers: 4 positive, 0 negative or no effect
- otherResults agree4 papers: 4 positive, 0 negative or no effect
- irrigationResults agree3 papers: 3 positive, 0 negative or no effect
- applicationResults agree2 papers: 2 positive, 0 negative or no effect
- biocharResults agree2 papers: 2 positive, 0 negative or no effect
- botanicalResults agree2 papers: 2 positive, 0 negative or no effect
- co2Results agree2 papers: 0 positive, 2 negative or no effect
- droughtResults agree2 papers: 0 positive, 2 negative or no effect
- limeResults 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.