Physiology: gas exchange · Zea mays (maize)

1. silicon atomResults differ18 papers: 16 positive, 2 negative or no effect · 8 pairs of papers confirmed to differ
2. glycine betaineResults differ4 papers: 3 positive, 1 negative or no effect · 1 pair of papers confirmed to differ
3. chlormequat chlorideResults differ2 papers: 1 positive, 1 negative or no effect · 1 pair of papers confirmed to differ
4. (+)-abscisic acidPositive and negative results6 papers: 2 positive, 4 negative or no effect
5. aluminium atomPositive and negative results4 papers: 2 positive, 2 negative or no effect
6. atrazinePositive and negative results4 papers: 2 positive, 2 negative or no effect
7. copper atomPositive and negative results3 papers: 1 positive, 2 negative or no effect
8. hydrogen peroxidePositive and negative results3 papers: 2 positive, 1 negative or no effect
9. paclobutrazolPositive and negative results3 papers: 2 positive, 1 negative or no effect
10. sulfatePositive and negative results3 papers: 2 positive, 1 negative or no effect
11. 24-epi-brassinolidePositive and negative results2 papers: 1 positive, 1 negative or no effect
12. 3,5-dibromo-4-hydroxybenzonitrilePositive and negative results2 papers: 1 positive, 1 negative or no effect
13. bentazonePositive and negative results2 papers: 1 positive, 1 negative or no effect
14. iron atomPositive and negative results2 papers: 1 positive, 1 negative or no effect
15. zeatinPositive and negative results2 papers: 1 positive, 1 negative or no effect
16. melatoninResults agree7 papers: 7 positive, 0 negative or no effect
17. zinc atomResults agree5 papers: 5 positive, 0 negative or no effect
18. cadmium atomResults agree4 papers: 0 positive, 4 negative or no effect
19. lead atomResults agree3 papers: 0 positive, 3 negative or no effect
20. poly(ethylene glycol)Results agree3 papers: 0 positive, 3 negative or no effect
21. salicylic acidResults agree3 papers: 3 positive, 0 negative or no effect
22. sodium nitroprussideResults agree3 papers: 3 positive, 0 negative or no effect
23. Azospirillum brasilenseResults agree2 papers: 2 positive, 0 negative or no effect
24. Bacillus subtilisResults agree2 papers: 2 positive, 0 negative or no effect
25. FlumetsulamResults agree2 papers: 2 positive, 0 negative or no effect
26. PyridateResults agree2 papers: 2 positive, 0 negative or no effect
27. TrichodermaResults agree2 papers: 2 positive, 0 negative or no effect
28. brassinolideResults agree2 papers: 2 positive, 0 negative or no effect
29. calcium(2+)Results agree2 papers: 2 positive, 0 negative or no effect
30. dicambaResults agree2 papers: 2 positive, 0 negative or no effect
31. imazapicResults agree2 papers: 0 positive, 2 negative or no effect
32. metolachlorResults agree2 papers: 2 positive, 0 negative or no effect
33. nicotinamideResults agree2 papers: 2 positive, 0 negative or no effect
34. pendimethalinResults agree2 papers: 2 positive, 0 negative or no effect
35. spermidineResults agree2 papers: 2 positive, 0 negative or no effect
36. thifensulfuronResults agree2 papers: 2 positive, 0 negative or no effect
37. uniconazoleResults agree2 papers: 2 positive, 0 negative or no effect
38. droughtResults differ42 papers: 5 positive, 37 negative or no effect · 18 pairs of papers confirmed to differ
39. irrigationResults differ18 papers: 13 positive, 5 negative or no effect · 1 pair of papers confirmed to differ
40. mulchingResults differ9 papers: 8 positive, 1 negative or no effect · 1 pair of papers confirmed to differ
41. heatResults differ6 papers: 2 positive, 4 negative or no effect · 1 pair of papers confirmed to differ
42. nitrogenPositive and negative results26 papers: 21 positive, 5 negative or no effect
43. salinityPositive and negative results16 papers: 2 positive, 14 negative or no effect
44. tillagePositive and negative results14 papers: 11 positive, 3 negative or no effect
45. co2Positive and negative results10 papers: 7 positive, 3 negative or no effect
46. intercroppingPositive and negative results9 papers: 8 positive, 1 negative or no effect
47. mycorrhizaPositive and negative results9 papers: 8 positive, 1 negative or no effect
48. nanoparticlePositive and negative results7 papers: 5 positive, 2 negative or no effect
49. potassiumPositive and negative results7 papers: 6 positive, 1 negative or no effect
50. floodingPositive and negative results5 papers: 2 positive, 3 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.