Soil: physics · Medicago sativa (alfalfa)

1. ammoniaResults differ2 papers: 1 positive, 1 negative or no effect · 1 pair of papers confirmed to differ
2. potassium carbonateResults agree2 papers: 2 positive, 0 negative or no effect
3. fertilizationPositive and negative results7 papers: 6 positive, 1 negative or no effect
4. processingPositive and negative results4 papers: 2 positive, 2 negative or no effect
5. inoculationPositive and negative results3 papers: 1 positive, 2 negative or no effect
6. densityPositive and negative results2 papers: 1 positive, 1 negative or no effect
7. trap barrierPositive and negative results2 papers: 1 positive, 1 negative or no effect
8. droughtResults agree5 papers: 0 positive, 5 negative or no effect
9. mulchingResults agree4 papers: 4 positive, 0 negative or no effect
10. tillageResults agree4 papers: 4 positive, 0 negative or no effect
11. rotationResults agree3 papers: 3 positive, 0 negative or no effect
12. irrigationResults 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.