ðɪs ˈɛstᵻmət ɪz bˈɛɾɚ ðɐn ɪn pɹˈiːviəs stˈʌdiz ænd ɐkˈoːɹdɪŋ tə ðɪ ˈɔːθɚz pˈɑːɹtli dˈuː tə ðə lˈɑːɹdʒɚ sˈaɪz ʌvðə fˈiːld tɹˈaɪəl θɹˈiː dˈæʃ nˈaɪn hˈɑː ˌɔn tˈɛn fˈɑːɹmz.
This estimate is better than in previous studies and according to the authors partly due to the larger size of the field trial (3-9 ha) on 10 farms.