| regain = aftermath |
| ray-grass anglais = annual rye grass |
| rampe de traitement = boom, spray |
| renoncule = buttercup |
| repousses de céréales = cereal volunteers |
| recouvrement de la culture = closing of rows |
| rumex = dock |
| ressuyé = dried |
| régulateur de croissance = growth regulator |
| rustique = hardy |
| renouée des oiseaux = knotgrass, wireweed, black bindweed |
| rhynchosporiose = leaf blotch |
| redressement = leaf-sheath erect stage |
| renouée persicaire = redshank |
| repousse = regrowth |
| répulsif = repellant |
| résistance = resistance |
| rodenticide = rodenticide |
| racine = root |
| rang = row |
| rouille = rust |
| rendzine = silty soil |
| récolte sur pied = standing crop |
| réservoir = tank |
| ressuyer = to dry out |
| régénérer les prairies = to renovate |
| rouler = to roll |
| ruisseler = to run-off |
| remorque = trailer |
| résumé des essais = trial summary |
| rendement = yield |
