BRAZIL SOY HARVEST 13 PCT COMPLETE - NEWSLETTER Brazil's soybean harvest was 13 pct complete by March 20, the Safras e Mercado newsletter said. This compares with an historic average for this time of year of 20 pct. The newsletter gave the following figures for the progress of the harvest in the main producer states: Parana: 40 pct Mato Grosso do Sul: 15 pct Mato Grosso: five pct Rio Grande do Sul: two pct