Grand-Ouest + all other regions with irrigated rice cultivation. 500,000. 44,400. 2,800,000. 5,600,000. 8,400,000. 188. 1,000 drip irrigation kits are distributed each year to irrigate 250 ha of high-value crops (in this case onions). Drop irrigation. Ha cumul. 1,250. 2,500. 3,750. All regions. 20,000. 0. 35,000,000. 70,000,000. 105,000,000. 25.