| trace elements) = carence |
| temperature) = doux (temps, température) |
| take-all = piétin échaudage |
| tall meadow fescue = fétuque élevée |
| tank = réservoir |
| tendril = vrille |
| thinner = pré-démarieuse de betteraves à sucre |
| thistle = chardon |
| tiller = talle |
| tillering = tallage |
| timothy = fléole |
| TMV = virus de la mosaïque du navet |
| turnip mosaic virus = virus de la mosaïque du navet |
| to spray (a crop) = traiter, pulvériser |
| to apply a spray = traiter, pulvériser |
| to mark out a trial = piqueter un essai |
| to thin = démarier, éclaircir |
| to till = travailler le sol |
| to cultivate = travailler le sol |
| to work the soil = travailler le sol |
| to tiller = taller |
| to top = écimer |
| tolerant = tolérant |
| tool = outil |
| topsoil = couche arable |
| tower silo = silo tour |
| toxicant = produit toxique |
| trace element = oligo-élément |
| trailer = remorque |
| translocated herbicide = herbicide systémique |
| trial = essai |
| trial location = localisation des essais |
| trial objective = intérêt de l'essai |
| trial aim = intérêt de l'essai |
| trial protocole = protocole d'essai |
| trial summary = résumé des essais |
| trickle irrigation = irrigation goutte à goutte |
| troublesome weeds = |
| tubers = tubercules |
| turnip = navet |
| turnip mosaic virus = TMV |
| twig = brindille |
