Sources and methods

This is an independent reference archive. It is not affiliated with the organizations supplying the source data.

Records retain original publisher links and source-check dates. A date checked is separate from the date the underlying information was published. Dated records do not establish current operating status, approval, availability or suitability.

• agcrops.osu.edu
• agsci.oregonstate.edu
• apps.ncdot.gov
• arlweb.msha.gov
• azdot.gov
• beef.unl.edu
• blog-crop-news.extension.umn.edu
• blogs.cornell.edu
• blogs.ifas.ufl.edu
• cap.unl.edu
• cms.unl.edu
• connect.ncdot.gov
• content.ces.ncsu.edu
• cropsandsoils.extension.wisc.edu
• cropwatch.unl.edu
• digitalcommons.usu.edu
• dot.ca.gov
• efotg.sc.egov.usda.gov
• extension.psu.edu
• extension.sdstate.edu
• extension.umn.edu
• forages.ca.uky.edu
• forages.ces.ncsu.edu
• forages.mgcafe.uky.edu
• forages.oregonstate.edu
• forages.osu.edu
• ftp.txdot.gov
• fyi.extension.wisc.edu
• idot.illinois.gov
• legacy.drup2.uvm.edu
• livestock.extension.wisc.edu
• maple.iowadot.gov
• ncturfbugs.wordpress.ncsu.edu
• ndorpubreports.nebraska.gov
• npn.rngr.net
• open.spotify.com
• plants.usda.gov
• pollinator.cals.cornell.edu
• programs.ifas.ufl.edu
• publications.ca.uky.edu
• publications.mgcafe.uky.edu
• soillab.tennessee.edu
• tallgrassprairiecenter.org
• transportation.ky.gov
• transportation.wv.gov
• u.osu.edu
• ucanr.edu
• uknowledge.uky.edu
• utbeef.tennessee.edu
• uvmd10.drup2.uvm.edu
• varietytesting.tamu.edu
• vtrans.vermont.gov
• wayne.ces.ncsu.edu
• webapps.transportation.wv.gov
• wisconsindot.gov
• wsdot.wa.gov
• www.ag.ndsu.edu
• www.agronomy.k-state.edu
• www.agronomy.org
• www.alfalfa.org
• www.alforexseeds.com
• www.americangeosciences.org
• www.ardot.gov
• www.blm.gov
• www.dot.ny.gov
• www.dot.state.al.us
• www.dot.state.mn.us
• www.fhwa.dot.gov
• www.flickr.com
• www.in.gov
• www.maine.gov
• www.michigan.gov
• www.nass.usda.gov
• www.odot.org
• www.oregon.gov
• www.penndot.pa.gov
• www.redbrand.com
• www.rma.usda.gov
• www.state.nj.us
• www.tn.gov
• www.txdot.gov
• www.uky.edu
• www.usda.gov
• www.uvm.edu
• www.virginiadot.org
• www3.ctahr.hawaii.edu

Original reports and procedures remain with their publishers. Consult the linked original for complete instructions, qualifications and updates.