*Wheat planting is getting near for forage wheat.   *Texas citrus growers are forecast to produce more oranges this year.   *A vaccine manufacture is testing a vaccine for avian influenza in dairy cattle. *The weather is making things tough for Texas High Plains ranchers.   *USDA has released a new net farm income forecast.  *Much needed rain fell recently on the South Plains of Texas.   *A group of Texas farmers and ranchers toured agriculture in Japan last week.   *A new treatment has been developed for infertility in mares.