solarization
US /ˌsoʊ.lɚ.əˈzeɪ.ʃən/
UK /ˌsoʊ.lɚ.əˈzeɪ.ʃən/

1.
the process of exposing something to sunlight, especially for therapeutic purposes or to achieve a particular effect in photography or agriculture
:
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The photographer used solarization to create a unique artistic effect in the image.
•
Solarization of soil is an effective method for pest control in agriculture.