In agricultural entomology, the USDA began to research biological control in 1881; it instituted its first large program in 1905, searching Europe and Japan for natural enemies of the spongy moth and brown-tail moth, establishing parasitoids (such as solitary wasps) and predators of both pests in the US.
ɪn ˌæɡɹɪkˈʌltʃɚɹəl ɛntəmˈɑːlədʒi, ðə jˌuːˌɛsdˌiːˈeɪ bɪɡˈæn tə ɹᵻsˈɜːtʃ bˌaɪəlˈɑːdʒɪkəl kəntɹˈoʊl ɪn wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd ˈeɪɾi wˈʌn; ɪɾ ˈɪnstɪtˌuːɾᵻd ɪts fˈɜːst lˈɑːɹdʒ pɹˈoʊɡɹæm ɪn nˈaɪntiːnhˈʌndɹɪd fˈaɪv, sˈɜːtʃɪŋ jˈʊɹɹəp ænd dʒəpˈæn fɔːɹ nˈætʃɚɹəl ˈɛnəmiz ʌvðə spˈʌndʒi mˈɑːθ ænd bɹˈaʊntˈeɪl mˈɑːθ, ɪstˈæblɪʃɪŋ pˈæɹəsˌɪɾɔɪdz sˈʌtʃ ɐz sˈɑːlətˌɛɹi wˈɑːsps ænd pɹˈɛdəɾɚz ʌv bˈoʊθ pˈɛsts ɪnðə jˌuːˈɛs.