unirrigated
adjective
un·ir·ri·gat·ed ˌən-ˈir-ə-ˌgā-təd 
: not supplied with water by irrigation : not irrigated
unirrigated land/crops
Example Sentences
Recent Examples on the Web To prevent that, the state has set aside $50 million for a new program to help farmers repurpose dry lands by turning it into wildlife habitat, groundwater recharge basins, livestock range or planting unirrigated cover crops. 
Jack Lee, San Francisco Chronicle, 16 Sep. 2022 But Arvizu, 68, told him the pasture would soon lie fallow — brown like the unirrigated land that surrounded it. Los Angeles Times, 1 Aug. 2021 Some of these plant selections, as well as many other drought-tolerant plants, can be found at local nurseries and be planted in unirrigated areas of the landscape as a way to decrease water use in gardens. oregonlive, 3 June 2021
Jack Lee, San Francisco Chronicle, 16 Sep. 2022 But Arvizu, 68, told him the pasture would soon lie fallow — brown like the unirrigated land that surrounded it. Los Angeles Times, 1 Aug. 2021 Some of these plant selections, as well as many other drought-tolerant plants, can be found at local nurseries and be planted in unirrigated areas of the landscape as a way to decrease water use in gardens. oregonlive, 3 June 2021 Word History
First Known Use
1805, in the meaning defined above