Registration of 'CP 10-1619' Sugarcane for Use on Sand Soils

摘要

'CP 10-1619' (Reg. no. CV-191, PI 687220) sugarcane (a complex hybrid of Saccharum spp.) was developed and released (5 June 2017) through cooperative research conducted by the USDA-ARS Sugarcane Field Station at Canal Point, the University of Florida, and the Florida Sugarcane League, Inc., for use on mineral (sand) soils. The cultivar was derived from polycross no. X08-1197A (CP 97-1777 x Poly 08-19) and has high cane and sucrose yields, particularly in the plant cane, resulting in a high economic index on sand soils. Results of replicated trials on sand soils (2015-2017; three locations) were averaged over nine harvests from the three crops (i.e., plant cane, first ratoon, and second ratoon). Yield comparisons with check cultivars ('CL 88-4730' and 'CP 96-1252') indicated CP 10-1619 had significantly higher means than CL 88-4730 (P = 0.10) for cane yield (131.6 Mg ha(-1)), sugar yield (16.5 Mg ha(-1)), and economic index (3037 $ ha(-1)). CP 10-1619 had significantly (P = 0.10) higher means than both check cultivars for stalk weight (0.9 kg stalk(-1)) and stalk count (134,350 stalks ha(-1)). CP 10-1619 has demonstrated moderate resistance to both brown and orange rusts, as well as smut. CP 10-1619 is resistant to mosaic and leaf scald on sand soils and is moderately susceptible to ratoon stunting disease. CP 10-1619 is moderately resistant to freezing temperatures.