Explanation:

Dryland farming refers to farming done primarily in region shaving rainfall less than 75cm while wetland farming is the farming done in regions having rainfall above 75cm. (even if the exact criteria of 75 cm is not observed, generally dryland farming refers to farming done in dry arid regions of country while wetland farming is done in moist/humid regions of country)
Sugarcane is a water intensive crop and requires rainfall over and above 100cm or assured irrigation supplies