Eleven of the state's 14 counties have been deemed "primary natural disaster areas" by the United States Department of Agriculture due to substantial crop losses that began with a February deep freeze and continued though a summer marked by severe drought. Farmers in those counties are eligible for low interest emergency loans from the USDA's Farm Service Agency, the USDA said. Farmers have eight months to apply for a loan to help cover part of their losses. A deep freeze around Valentine's Day wiped out almost all of the state's peach crop, farmers previously told the News Service, and the Executive Office of Energy and Environmental Affairs said Tuesday that other tree fruits were affected as well. On top of the deep freeze, Massachusetts farmers have been hit this season with an ongoing and widespread drought that's been blamed for contributing to wild fires, an outbreak of gypsy moths, higher rates of ant infestation, smaller than usual apples, loss of crops, a shortage of cattle feed, and an elevated population of mosquitoes able to carry West Nile virus.