- calcium atomPositive and negative results28 papers: 25 positive, 3 negative or no effect
- zinc atomPositive and negative results27 papers: 25 positive, 2 negative or no effect
- iron atomPositive and negative results19 papers: 16 positive, 3 negative or no effect
- sulfur atomPositive and negative results16 papers: 12 positive, 4 negative or no effect
- RhizobiumPositive and negative results13 papers: 12 positive, 1 negative or no effect
- cobalt atomPositive and negative results9 papers: 8 positive, 1 negative or no effect
- molybdenum atomPositive and negative results8 papers: 6 positive, 2 negative or no effect
- Zea maysPositive and negative results7 papers: 6 positive, 1 negative or no effect
- iron(2+) sulfate (anhydrous)Positive and negative results7 papers: 6 positive, 1 negative or no effect
- boraxPositive and negative results6 papers: 3 positive, 3 negative or no effect
- ethylenediaminetetraacetic acidPositive and negative results4 papers: 3 positive, 1 negative or no effect
- silicon atomPositive and negative results4 papers: 3 positive, 1 negative or no effect
- cadmium atomPositive and negative results3 papers: 2 positive, 1 negative or no effect
- AzotobacterPositive and negative results2 papers: 1 positive, 1 negative or no effect
- magnesium sulfatePositive and negative results2 papers: 1 positive, 1 negative or no effect
- manganese atomPositive and negative results2 papers: 1 positive, 1 negative or no effect
- zinc sulfateResults agree13 papers: 13 positive, 0 negative or no effect
- boron atomResults agree7 papers: 7 positive, 0 negative or no effect
- salicylic acidResults agree7 papers: 7 positive, 0 negative or no effect
- Funneliformis mosseaeResults agree5 papers: 5 positive, 0 negative or no effect
- Triticum aestivumResults agree5 papers: 5 positive, 0 negative or no effect
- sodium nitroprussideResults agree5 papers: 5 positive, 0 negative or no effect
- aluminium atomResults agree4 papers: 0 positive, 4 negative or no effect
- nitric oxideResults agree4 papers: 4 positive, 0 negative or no effect
- selenium atomResults agree4 papers: 4 positive, 0 negative or no effect
- BradyrhizobiumResults agree3 papers: 3 positive, 0 negative or no effect
- citric acidResults agree3 papers: 3 positive, 0 negative or no effect
- feldsparResults agree3 papers: 3 positive, 0 negative or no effect
- poly(ethylene)Results agree3 papers: 3 positive, 0 negative or no effect
- CyanobacteriotaResults agree2 papers: 2 positive, 0 negative or no effect
- Gossypium hirsutumResults agree2 papers: 2 positive, 0 negative or no effect
- ImazethapyrResults agree2 papers: 2 positive, 0 negative or no effect
- OxyfluorfenResults agree2 papers: 2 positive, 0 negative or no effect
- calcium carbonateResults agree2 papers: 2 positive, 0 negative or no effect
- calcium oxideResults agree2 papers: 2 positive, 0 negative or no effect
- copper atomResults agree2 papers: 2 positive, 0 negative or no effect
- elemental sulfurResults agree2 papers: 2 positive, 0 negative or no effect
- lead atomResults agree2 papers: 0 positive, 2 negative or no effect
- melatoninResults agree2 papers: 2 positive, 0 negative or no effect
- micronutrientResults agree2 papers: 0 positive, 2 negative or no effect
- limeResults differ46 papers: 39 positive, 7 negative or no effect · 1 pair of papers confirmed to differ
- fertilizationPositive and negative results153 papers: 147 positive, 6 negative or no effect
- inoculationPositive and negative results56 papers: 55 positive, 1 negative or no effect
- applicationPositive and negative results45 papers: 42 positive, 3 negative or no effect
- phosphorusPositive and negative results41 papers: 37 positive, 4 negative or no effect
- intercroppingPositive and negative results30 papers: 28 positive, 2 negative or no effect
- nitrogenPositive and negative results24 papers: 22 positive, 2 negative or no effect
- potassiumPositive and negative results19 papers: 14 positive, 5 negative or no effect
- irrigationPositive and negative results17 papers: 13 positive, 4 negative or no effect
- herbicidePositive and negative results15 papers: 11 positive, 4 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.