How did the Karakum Canal affect farming in the Tejen oasis?

Before the construction of the Karakum Canal, farming in the Tejen oasis was severely limited by water scarcity, restricting cultivation to small areas of wheat, barley, and melons.1

The arrival of the canal, coupled with the construction of the Hauz-Khan Reservoir, transformed the region's agricultural capacity by providing the necessary water to irrigate large areas. This development enabled the cultivation of long-staple cotton and supported the establishment of local cotton-processing plants, significantly shifting the oasis's economic landscape.1