This report summarizes the pesticide assessment for corn and soybeans in the Northeast. Without insecticides, cutworms would cause the greatest corn yield losses and Mexican bean beetles the greatest soybean yield losses. Seed rots and seedling blights would cause substantial corn yield losses without pesticide control, while nematodes would reduce soybean yields. Among the herbicides, the loss of triazines would cause the greatest corn yield losses and acetanilides the greatest soybean losses. This report includes pest rankings, estimates of acreages treated with pesticides or other pest management practices, and estimates of pest losses with and without pesticide use, for insects, diseases, nematodes, and weeds.