Declining soybean yields have deprived processors of the soybeans needed to make soybean meal, Argentina's top export.
"The inflow of foreign currency in the month of March reflects a market affected by the extreme drought that has reduced production and led ports and grinding plants to operate with extremely high levels of idle capacity - the highest in years," CIARA said in as statement. Crop exports are a critical source of foreign currency for Argentina's cash-strapped central bank.
The government said it would launch a preferential exchange rate this week to stimulate soybean exports. Known as the "soy dollar", such preferential rates were used twice last year to boost exports and increase the central bank's reserves. (Reporting by Walter Biachi; editing by Barbara Lewis)