| Experiment treatments | Fertilizer | Pesticide | plowing | yield (t∙ha−1) | ||
| 1 | Natural farming | Aomori | None | None | None | 5 |
| 2 | Natural farming | Aomori | None | None | None | 7 |
| 3 | Natural farming | Nagano | None | None | None | 10 |
| 4 | Organic farming | Aomori | Chicken dung compost | Pesticides approved by JAS organic certification | Yes | 30 |
| 5 | Organic farming | Aomori | Chicken dung, rice bran, rapeseed meal, fish cake | Pesticides approved by JAS organic certification | Yes | 45 |
| 6 | Organic farming | Nagano | Cow dung compost | Pesticides approved by JAS organic certification | Yes | 20 |
| 7 | Hybrid farming | Aomori | Organic and chemical fertilizers | Reduction of synthetic chemical pesticides | Yes | 30 |
| 8 | Hybrid farming | Nagano | Organic and chemical fertilizers | Reduction of synthetic chemical pesticides | Yes | 30 |
| 9 | Hybrid farming | Nagano | Organic and chemical fertilizers | Reduction of synthetic chemical pesticides | Yes | 30 |
| 10 | Conventional farming | Aomori | Chemical fertilizers | Synthetic chemical pesticides | Yes | 30 |
| 11 | Conventional farming | Aomori | Chemical fertilizers | Synthetic chemical pesticides | Yes | 40 |
| 12 | Conventional farming | Nagano | Chemical fertilizers | Synthetic chemical pesticides | Yes | 30 |