- fertilizationPositive and negative results9 papers: 8 positive, 1 negative or no effect
- nitrogenPositive and negative results7 papers: 4 positive, 3 negative or no effect
- trap barrierPositive and negative results7 papers: 5 positive, 2 negative or no effect
- graftingPositive and negative results4 papers: 3 positive, 1 negative or no effect
- processingPositive and negative results4 papers: 3 positive, 1 negative or no effect
- stagePositive and negative results4 papers: 2 positive, 2 negative or no effect
- loss of functionPositive and negative results3 papers: 2 positive, 1 negative or no effect
- floodingPositive and negative results2 papers: 1 positive, 1 negative or no effect
- lightPositive and negative results2 papers: 1 positive, 1 negative or no effect
- ozonePositive and negative results2 papers: 1 positive, 1 negative or no effect
- potassiumPositive and negative results2 papers: 1 positive, 1 negative or no effect
- radiationPositive and negative results2 papers: 1 positive, 1 negative or no effect
- botanicalResults agree9 papers: 9 positive, 0 negative or no effect
- co2Results agree9 papers: 9 positive, 0 negative or no effect
- mulchingResults agree4 papers: 4 positive, 0 negative or no effect
- nanoparticleResults agree4 papers: 4 positive, 0 negative or no effect
- classResults agree2 papers: 2 positive, 0 negative or no effect
- droughtResults agree2 papers: 2 positive, 0 negative or no effect
- humidityResults agree2 papers: 2 positive, 0 negative or no effect
- in vitroResults agree2 papers: 2 positive, 0 negative or no effect
- otherResults agree2 papers: 2 positive, 0 negative or no effect
- physical treatmentResults agree2 papers: 2 positive, 0 negative or no effect
- shadeResults agree2 papers: 0 positive, 2 negative or no effect
- solarizationResults 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.