crop@ (Corrects harvest to planting in headline and first paragraph)
BUENOS AIRES, Jan 3 (Reuters) - Rain and hail storms have slowed soybean planting in Argentina over the last week, washing out some fields and raising concerns that continued wet weather could put the 2018/19 crop at risk, the Buenos Aires Grains Exchange said in a report on Thursday.
Early in the season, the exchange said it expected a 53 million tonne soybean harvest, up dramatically from the previous season, which was hurt by drought. So far, 89.7 percent of 17.9 hectares expected to be sown with soy in the current crop year have been planted, the report said.
"Although some fields were lost to heavy storms, hail and abundant rainfall, the weather situation continues to be favorable in extensive, high producing regions," the exchange said in its weekly crop report.
"But if the current wet trend continues over the weeks ahead, excessive moisture could begin to dominate the scenario and compromise the normal development of the crop in all regions where soils are already well supplied with moisture," it said.
Argentina is the world's biggest exporter of soymeal livestock feed, as well as a major supplier of raw soybeans, wheat and corn. (Reporting by Buenos Aires Newsroom, Editing by Paul Simao)