Physiology: photosynthesis · Ricinus communis (castor bean)

1. copper(II) sulfatePositive and negative results2 papers: 1 positive, 1 negative or no effect
2. cadmium atomResults agree3 papers: 0 positive, 3 negative or no effect
3. citric acidResults agree2 papers: 2 positive, 0 negative or no effect
4. sodium chlorideResults agree2 papers: 0 positive, 2 negative or no effect
5. salinityResults agree7 papers: 0 positive, 7 negative or no effect
6. droughtResults agree4 papers: 0 positive, 4 negative or no effect
7. applicationResults agree3 papers: 3 positive, 0 negative or no effect
8. otherResults agree2 papers: 2 positive, 0 negative or no effect
9. potassiumResults 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.