- silicon atomPositive and negative results4 papers: 3 positive, 1 negative or no effect
- fungicidePositive and negative results6 papers: 3 positive, 3 negative or no effect
- inoculationPositive and negative results5 papers: 2 positive, 3 negative or no effect
- seed treatmentPositive and negative results3 papers: 1 positive, 2 negative or no effect
- cover cropPositive and negative results2 papers: 1 positive, 1 negative or no effect
- rotationPositive and negative results2 papers: 1 positive, 1 negative or no effect
- applicationResults agree2 papers: 2 positive, 0 negative or no effect
- radiationResults 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.