Yield · Cannabis sativa

1. Trichoderma harzianumPositive and negative results2 papers: 1 positive, 1 negative or no effect
2. 3,5-dibromo-4-hydroxybenzonitrileResults agree2 papers: 0 positive, 2 negative or no effect
3. boron atomResults agree2 papers: 0 positive, 2 negative or no effect
4. sodium chlorideResults agree2 papers: 0 positive, 2 negative or no effect
5. fertilizationPositive and negative results31 papers: 25 positive, 6 negative or no effect
6. nitrogenPositive and negative results16 papers: 15 positive, 1 negative or no effect
7. densityPositive and negative results9 papers: 7 positive, 2 negative or no effect
8. lightPositive and negative results9 papers: 7 positive, 2 negative or no effect
9. herbicidePositive and negative results7 papers: 3 positive, 4 negative or no effect
10. irrigationPositive and negative results6 papers: 5 positive, 1 negative or no effect
11. droughtPositive and negative results4 papers: 3 positive, 1 negative or no effect
12. applicationPositive and negative results3 papers: 2 positive, 1 negative or no effect
13. growing mediumPositive and negative results3 papers: 1 positive, 2 negative or no effect
14. otherPositive and negative results3 papers: 2 positive, 1 negative or no effect
15. phosphorusPositive and negative results3 papers: 2 positive, 1 negative or no effect
16. pruningPositive and negative results3 papers: 1 positive, 2 negative or no effect
17. rotationPositive and negative results3 papers: 1 positive, 2 negative or no effect
18. sowing timePositive and negative results3 papers: 2 positive, 1 negative or no effect
19. inoculationPositive and negative results2 papers: 1 positive, 1 negative or no effect
20. potassiumPositive and negative results2 papers: 1 positive, 1 negative or no effect
21. uvPositive and negative results2 papers: 1 positive, 1 negative or no effect
22. fungicideResults agree3 papers: 3 positive, 0 negative or no effect
23. classResults agree2 papers: 2 positive, 0 negative or no effect
24. climate siteResults agree2 papers: 2 positive, 0 negative or no effect
25. insecticideResults agree2 papers: 2 positive, 0 negative or no effect
26. mulchingResults agree2 papers: 0 positive, 2 negative or no effect
27. physical treatmentResults agree2 papers: 2 positive, 0 negative or no effect
28. salinityResults 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.