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Some places are submerged; consequently, farmers cannot plant the vegetable, leading to supply is lower than demand, he added.
With the price of onion increasing over the past few days, a farmer earns net profit of VND15million (US$707) a 1,000 meter square. Farmers earn much profit from planting onion than other vegetable.
Meanwhile price of sweet potatoes in provinces Vinh Long, Dong Thap, Can Tho dropped dramatically. It fell to VND320,000-340,000 per quintal.
Farmers in Vinh Long said that it was due to Chinese market shrink. In other side, farmers have seen a crop failure and low sweet potato quality leading to the falling in price. They suffered losses around VND50 million (US$ 1,889) per hectare as selling prices have dropped to throwaway rates.