Rains delayed soybean and corn harvest progress in South America last week, creating the possibility of significant market impacts later. The rally in CBOT corn has limited upward movement in Argentine basis, and wheat exporters are taking action. Soybeans Argentina’s soybean harvest started slowly last week due to the rains. Only 3 percent of the national area was covered, 5.6 percent below the last campaign. Production estimates are still rising, and exporters are expecting 57 MMT. Initial yields are above 4.2 MT/hectare, which strongly indicates total production will exceed that expectation. Rains are expected for the next 10 days in all areas of Buenos Aires, Santa Fe, Cordoba, Rosario and Entre Rios, further slowing the harvest.The F...