Physiology: water · Olea europaea (common olive)

1. sodium chloridePositive and negative results3 papers: 2 positive, 1 negative or no effect
2. droughtPositive and negative results18 papers: 2 positive, 16 negative or no effect
3. irrigationPositive and negative results17 papers: 9 positive, 8 negative or no effect
4. cover cropPositive and negative results2 papers: 1 positive, 1 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.