Potato virus Y · Solanum tuberosum (potato)

1. salicylic acidPositive and negative results5 papers: 4 positive, 1 negative or no effect
2. Rhizophagus intraradicesPositive and negative results2 papers: 1 positive, 1 negative or no effect
3. infectionPositive and negative results15 papers: 3 positive, 12 negative or no effect
4. inoculationPositive and negative results6 papers: 2 positive, 4 negative or no effect
5. loss of functionPositive and negative results5 papers: 2 positive, 3 negative or no effect
6. insecticidePositive and negative results4 papers: 3 positive, 1 negative or no effect
7. intercroppingPositive and negative results3 papers: 2 positive, 1 negative or no effect
8. mycorrhizaPositive and negative results3 papers: 2 positive, 1 negative or no effect
9. nitrogenPositive and negative results2 papers: 1 positive, 1 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.