Dhankhar, addressing a two-day second Agri Leadership Summit being organised at Surajkund here, said the milk of 'Rathi' breed of cows was being used by Bollywood stars on a large-scale.
Dhankhar urged the farmers from Haryana to adopt modern and more cash-oriented methods and adopt cash crop farming.
He urged the farmers in Haryana to target the milk and ghee market in Delhi and the national capital region (NCR).
He also said people of Haryana should keep one more buffalo in their house to increase the state's milk production.
There would be 18 seminars during the two-day summit in which experts from various fields will share their views and experiences.
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