In subtropical and arid environments, the timing and extent of agriculture may be limited by rainfall, either not allowing multiple annual crops in a year, or requiring irrigation.
ɪn sʌbtɹˈɑːpɪkəl ænd ˈæɹɪd ɛnvˈaɪɹənmənts, ðə tˈaɪmɪŋ ænd ɛkstˈɛnt ʌv ˈæɡɹɪkˌʌltʃɚ mˈeɪ biː lˈɪmɪɾᵻd baɪ ɹˈeɪnfɔːl, ˈiːðɚ nˌɑːt ɐlˈaʊɪŋ mˌʌltɪpəl ˈænjuːəl kɹˈɑːps ɪn ɐ jˈɪɹ, ɔːɹ ɹᵻkwˈaɪɚɹɪŋ ˌɪɹɪɡˈeɪʃən.