Crop injury · Lactuca sativa (garden lettuce)

1. Apium graveolens Dulce GroupPositive and negative results2 papers: 1 positive, 1 negative or no effect
2. sulfatePositive and negative results2 papers: 1 positive, 1 negative or no effect
3. 2,4-DResults agree2 papers: 0 positive, 2 negative or no effect
4. copper atomResults agree2 papers: 0 positive, 2 negative or no effect
5. botanicalPositive and negative results21 papers: 6 positive, 15 negative or no effect
6. solarizationPositive and negative results4 papers: 2 positive, 2 negative or no effect
7. storagePositive and negative results3 papers: 2 positive, 1 negative or no effect
8. fertilizationPositive and negative results2 papers: 1 positive, 1 negative or no effect
9. transplantingPositive and negative results2 papers: 1 positive, 1 negative or no effect
10. co2Results agree4 papers: 0 positive, 4 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.