The spelling of the phrase "tray agricultures" can be explained using the International Phonetic Alphabet (IPA). "Tray" is spelled /treɪ/, with the diphthong "ay" representing the sounds /eɪ/ as in "day". "Agricultures" is spelled /ˈæɡrɪˌkʌltʃərz/, with emphasis on the second syllable and the "ch" representing the sound /k/. This phrase refers to the practice of growing crops on trays, often used in urban agriculture for small-scale food production.