We have no meanings for "irrigate about" in our records yet.
1 Big enough to irrigate about twenty-five acres of desert for alfalfa.
2 Monsoon rains, vital for agricultural output and economic growth, irrigate about 60 percent of India's farmland.
3 The rains, vital for farm output and economic growth, irrigate about 60 percent of India's farmland.
4 Monsoon rains, crucial for India's agricultural output and economic growth, irrigate about 60 percent of the country's farms.
5 The completed scheme will eventually irrigate about 60,000 hectares of farmland.
6 One of the worst-damaged cities is Dujiangyan, site of multiple dams and weirs that irrigate about 3 million hectares in the fertile Sichuan plain.
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