LINCOLN, Neb. (AP) – The U.S. Department of Agriculture says the heat and humidity continue to cause livestock deaths in Nebraska, while the growing number of grasshoppers is becoming a problem.  The USDA in its weekly crop report on Monday says temperatures last week averaged 2 degrees above normal, with highs mainly in the mid to upper 90s.  Rainfall was heaviest in the eastern Panhandle and the south central region, with about 3.5 inches. The northern two thirds of Nebraska were dry, and grasshopper numbers are becoming a concern in parts of western Nebraska.  The USDA says 79 percent of the corn crop and 78 percent of the soybeans are in good to excellent shape.  The wheat harvest is nearly finished along with the second cutting of alfalfa.