Nutrient: efficiency · Vicia faba (faba bean)

1. phosphorusPositive and negative results6 papers: 4 positive, 2 negative or no effect
2. intercroppingResults agree2 papers: 2 positive, 0 negative or no effect
3. nitrogenResults agree2 papers: 2 positive, 0 negative or no effect
4. otherResults agree2 papers: 2 positive, 0 negative or no effect
5. 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.