Nutrient: content · Lolium perenne (perennial ryegrass)

1. copper atomPositive and negative results3 papers: 2 positive, 1 negative or no effect
2. sulfatePositive and negative results3 papers: 1 positive, 2 negative or no effect
3. carbohydratePositive and negative results2 papers: 1 positive, 1 negative or no effect
4. paraquatPositive and negative results2 papers: 1 positive, 1 negative or no effect
5. glucoseResults agree4 papers: 4 positive, 0 negative or no effect
6. ethylenediaminetetraacetic acidResults agree3 papers: 3 positive, 0 negative or no effect
7. sucroseResults agree3 papers: 3 positive, 0 negative or no effect
8. nitrilotriacetic acidResults agree2 papers: 2 positive, 0 negative or no effect
9. selenateResults agree2 papers: 2 positive, 0 negative or no effect
10. sodium nitroprussideResults agree2 papers: 2 positive, 0 negative or no effect
11. fertilizationPositive and negative results17 papers: 12 positive, 5 negative or no effect
12. otherPositive and negative results8 papers: 7 positive, 1 negative or no effect
13. pruningPositive and negative results7 papers: 2 positive, 5 negative or no effect
14. co2Positive and negative results4 papers: 2 positive, 2 negative or no effect
15. irrigationPositive and negative results3 papers: 1 positive, 2 negative or no effect
16. applicationPositive and negative results2 papers: 1 positive, 1 negative or no effect
17. droughtPositive and negative results2 papers: 1 positive, 1 negative or no effect
18. heavy metalPositive and negative results2 papers: 1 positive, 1 negative or no effect
19. limePositive and negative results2 papers: 1 positive, 1 negative or no effect
20. salinityPositive and negative results2 papers: 1 positive, 1 negative or no effect
21. inoculationResults agree11 papers: 11 positive, 0 negative or no effect
22. mycorrhizaResults agree7 papers: 7 positive, 0 negative or no effect
23. nitrogenResults agree6 papers: 6 positive, 0 negative or no effect
24. phResults agree3 papers: 0 positive, 3 negative or no effect
25. lightResults agree2 papers: 0 positive, 2 negative or no effect
26. pollutionResults 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.