Lardy, 2009. North Dakota State University Extension Service Document reference Lardy, G., 2009. Sunflower silage may be an option for drought-stressed sunflower crop. North Dakota State University Extension ServiceWeb http://www.ag.ndsu.edu/disaster/drought/droughtsunflowersilage.htmlCitation key Lardy, 2009Datasheets Sunflower forage and crop residues
