USDA, 1999. USDA-NRCS, Soil Quality Institute, Agronomy Technical Note No. 10 Document reference USDA, 1999. Sunn hemp: a cover crop for southern and tropical farming systems. USDA-NRCS, Soil Quality Institute, Agronomy Technical Note No. 10Web https://www.nrcs.usda.gov/Internet/FSE_DOCUMENTS/nrcs142p2_053283.pdfCitation key USDA, 1999Datasheets Sunn hemp (Crotalaria juncea)
