date:Jul 31, 2012
ndom sample of fields is drawn in each state and enumerators visit these fields to take measurements needed to forecast yields in pre-determined segments of the fields. In 2011 these measurements were taken in 1,920 corn fields and 1,835 soybean fields. For corn, the number of plants and number of ears per segment are counted and the size of the ears is measured. For soybeans, enumerators measure row width and count the number of plants, number of main nodes, lateral branches, dried flowers and