Correct Answer: (1) sugarcane
Solution:Sugarcane is the principal commercial crop of Haryana, followed by Cotton, Oilseeds and Sunflower. Commercial crops are marked by the use of higher doses of modern inputs, e.g. high yielding variety (HYV) seeds, chemical fertilisers, insecticides and pesticides in order to obtain higher productivity. On this count, rice is also considered a commercial crop in Haryana and Punjab.