plant assistance Keywords: Advanced Search Nebraska Extension of Holt-Boyd Counties Business Name Nebraska Extension of Holt-Boyd Counties Address 128 N. 6th Street, Suite 100 O'Neill, NE 68763 Phone Number (402) 336-2760 Website Holt County Extension Facebook Page @unlextensionholtboyd Email holt-county@unl.edu Category Community Resources & Social Services, Government Agencies & Services Tags animal care, chemical training, crop assistance, extension, Holt County, O'Neill, plant assistance