Japan said it would end tests for Trifluralin, a commonly used pre-emergence herbicide, on Vietnam's shrimp exported to the country, according to the Vietnam Association of Seafood Exporters and Producers (VASEP).

Following the decision of Japan to test Trifluralin on Vietnam's shrimp from Oct. 21, 2010, Vietnam's Ministry of Agriculture and Rural Development banned the use of 44 Trifluralin-contained products in aquatic farming as part of efforts to win back Japan's confidence in Vietnamese shrimp, Vietnam's state-run news agency quoted VASEP as saying on Wednesday.

Besides, Vietnam's shrimp exporters have tried to control Trifluralin in all exported shrimp, which had a significant impact on Japan's decision.

Japan remains the largest market for Vietnam's shrimp. In the first four months of 2013 Vietnam exported 168 million US dollars worth of shrimp to the country, up 2.4 percent over the same period last year.