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Title: A Report on the 2006 Outfield Variety Tests

Author
item ROBERT, TODD - LSU AG CTR, B.R., LA
item GRAVOIS, KENNETH - LSU AG CTR, B.R., LA
item GARRISON, DONNIE - USDA, ARS (RETIRED)
item Tew, Thomas
item WAGUESPACK, HERMAN - ASCL, THIBODAUX, LA
item JACKSON, WINDELL - ASCL, THIBODAUX, LA

Submitted to: Sugar Bulletin
Publication Type: Trade Journal
Publication Acceptance Date: 6/20/2007
Publication Date: 7/1/2007
Citation: Robert, T.J., Gravois, K.A., Garrison, D.D., Tew, T.L., Waguespack, H.L., Jackson, W.R. 2007. A report on the 2006 outfield variety tests. The Sugar Bulletin. 85(10):28-31.

Interpretive Summary:

Technical Abstract: Members of the USDA-ARS, Sugarcane Research Unit, the Louisiana State University Agricultural Center, and the American Sugar Cane League of the USA cooperatively evaluated the performance of candidate sugarcane varieties on eight grower fields located throughout the sugarcane growing region of Louisiana representing light and heavy soil types. Performance of the newer varieties were compared to HoCP 96-540 (14% of total cane area), which is the variety most likely to succeed LCP 85-384 as Louisiana’s leading commercial variety. Newer commercial varieties planted in outfield tests in 2006 included recently-released Ho 95-988 (2004), L97-128 (2004), L 99-226 (2006), L 99-233 (2006), and just-released HoCP 00-950 (2007). Experimental varieties were L 01-283, L 01-299, and HoCP 02-623. Commercial varieties L 97-128 and L 99-233 were not significantly different from HoCP 96-540 in sugar per acre (S/A), tons of cane per acre (TCA), and sugar per ton (S/T) in all crops from plant-cane through third-stubble, nor was Ho 95-988 through second-stubble. Variety L 99-226 was equal to the standard in S/A and TCA in all crops (except better in S/A in first-stubble) but consistently had better S/T in all three stubble crops. Newly released HoCP 00-950 was equal to HoCP 96-540 in S/A and TCA, and significantly higher in S/T in plant-cane, first-stubble, and second-stubble crops on all soil types. Experimental varieties L 01-283 and L 01-299 matched HoCP 96-540 for all traits in the plant-cane tests but were significantly higher than HoCP 96-540 in S/A and TCA in first-stubble. HoCP 02-623 was significantly lower than HoCP 96-540 in S/A and TCA in the plant-cane tests, but will continue to be evaluated on the strength of its stubbling ability in earlier tests.