Multiple cropping, in which several crops are grown sequentially in one year, and intercropping, when several crops are grown at the same time, are other kinds of annual cropping systems known as polycultures.
mˌʌltɪpəl kɹˈɑːpɪŋ, ɪnwˌɪtʃ sˈɛvɹəl kɹˈɑːps ɑːɹ ɡɹˈoʊn siːkwˈɛnʃəli ɪn wˈʌn jˈɪɹ, ænd ˌɪntɚkɹˈɑːpɪŋ, wˌɛn sˈɛvɹəl kɹˈɑːps ɑːɹ ɡɹˈoʊn æt ðə sˈeɪm tˈaɪm, ɑːɹ ˈʌðɚ kˈaɪndz ʌv ˈænjuːəl kɹˈɑːpɪŋ sˈɪstəmz nˈoʊn æz pˌɑːlɪkˈʌltʃɚz.