IPA: /ʌnˈmɛkənaɪzd/
KK: /ʌnˈmɛkəˌnaɪzd/
Not using machines or mechanical devices; done by hand or with simple tools.
The farm still relies on unmechanized methods for planting and harvesting crops.
Unmechanized → It is formed from "un-" (meaning not) and "mechanized" (from "mechanize" which comes from "mechanical" derived from Greek "mekhanikos" meaning of machines). The word "unmechanized" means not equipped with machines or not using machinery.
Think of 'not' ('un-') using 'machines' ('mechanized') — that's why unmechanized means not using machines.