CP 13-1223' (Reg. no. CV-204, PI 698176) sugarcane (a complex hybrid of Saccharum spp.) was released to growers in June 2020 for producing on muck soils in Florida. It was developed through a decade-long cooperative research program between the USDA-ARS,

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CP 12-1753' (Reg. no. CV-203, PI 698657) sugarcane (complex hybrid of Saccharum spp.) cultivar was developed through a cooperative research between USDA-ARS, the Florida Sugar Cane League, Inc., and the University of Florida. It was derived from a polycross made at Canal Point, FL, on 8 Dec. 2010 between a female parent CP 08-2409 and several male parents. CP 12-1753 had 11 harvests in Stage 4: plant cane and first ratoon at four locations and second ratoon at three locations. Harvest data showed that CP 12-1753 had significantly (P ≤ .05) higher cane yield and economic index than the reference cultivars 'CL 88-4730' and 'CPCL 97-2730', respectively, but had significantly lower cane yield in plant cane and lower economic index than the reference cultivar 'CP 96-1252'. Freeze tolerance of CP 12-1753 was lower than the reference cultivars. CP 12-1753 possesses Bru1, a major gene for brown rust resistance, and showed resistance to brown rust. At the time of release, it was resistant to orange rust, mosaic, and smut. It was moderately resistant to leaf scald and ratoon stunting disease. Considering the agronomic, yield, and disease traits, CP 12-1753 was released by the Florida Sugarcane Variety Committee in June 2020 to growers for commercial use on mineral (sand) soils.

Sugarcane (Saccharum spp. hybrids) is a major row crop in Florida. The effect of row-spacing on total row length per hectare can significantly effect the cost of major farm operations, including planting, harvesting and fertilizer application. In Florida, sugarcane is commonly planted at 1.5 m row-spacing. There is little information available on the effect of relatively narrow or wide spacing on the growth and yield of sugarcane, especially in new high-biomass cultivars. To determine sugarcane growth response to different row-spacing, a field trial was conducted in organic soil (Histosols) with four different row-spacings (1.2, 1.5, 1.8 m and a double row on a 1.5 m bed) and three sugarcane cultivars (CP 96-1252, CP 00-1101 and CP 01-1372). Data showed differential row-spacing effects on plant cane versus the first ratoon. In plant cane, depending on the cultivar, double row and 1.2 m spacing produced 17–46% and 23–42% greater sugar yield per hectare (TSH) than the current 1.5 m spacing, respectively. Overall, the combined average TSH of plant cane and the first ratoon in double and 1.2 m spacing was 20% and 26% greater than 1.5 m spacing. However, the yields in 1.5 m and 1.8 m row-spacing were similar. There was no significant effect in the first ratoon. There was no row-spacing effect on sucrose concentration. A similar response of cultivars to the tested row-spacings suggests that selecting cultivars for different row-spacings may not potentially show any yield improvements. Compared to the current 1.5 m spacing, narrow-spacing (1.2 m and double row) may potentially increase yields and wide (1.8 m) spacing reduce the production cost but further research is needed to understand the economic feasibility of different row configurations.

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