<%BANNER%>
UFIR IFAS
STANDARD VIEW MARC VIEW
Permanent Link: http://ufdc.ufl.edu/IR00003416/00001
 Material Information
Title: Sucrose Accumulation Maturity Curves for CP 89-2143
Physical Description: Fact Sheet
Creator: Gilbert, Robert
Publisher: University of Florida Cooperative Extension Service, Institute of Food and Agriculture Sciences, EDIS
Place of Publication: Gainesville, Fla.
 Notes
Acquisition: Collected for University of Florida's Institutional Repository by the UFIR Self-Submittal tool. Submitted by Melanie Mercer.
Publication Status: Published
General Note: "Published April 2004. Reviewed March 2009."
General Note: "SS-AGR-220"
 Record Information
Source Institution: University of Florida Institutional Repository
Holding Location: University of Florida
Rights Management: All rights reserved by the submitter.
System ID: IR00003416:00001


This item is only available as the following downloads:

SC06800 ( PDF )


Full Text

PAGE 1

Robert A. Gilbert, James M. Shine, Jr., Jimmy D. Miller, Ronald W. Rice, and Curtis R. Rainbolt2 1. This document is SS-AGR-220, one of a series of the Agronomy Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Published April 2004. Reviewed March 2009. This publication is also a part of the Florida Sugarcane Handbook, an electronic publication of the Agronomy Department. For more information, contact the editor of the Sugarcane Handbook, Ronald W. Rice (rwr@ufl.edu). Please visit the EDIS Web site at http://edis.ifas.ufl.edu. 2. R. A. Gilbert, assistant professor, Agronomy Department, Everglades REC-Belle Glade, FL; J. M. Shine, Jr., Sugar Cane Grower's Cooperative of Florida, 1500 W. Sugar House Rd, Belle Glade, FL 33430; J. D. Miller, courtesy professor, Agronomy Department (Retired), USDA-ARS, Sugarcane Field Station, 12990 US Hwy 441, Canal Point, FL 33438; R. W. Rice, Sugar Cane Grower's Cooperative of Florida, 1500 W. Sugar House Rd, Belle Glade, FL 33430; and C. R. Rainbolt, Palm Beach County Extension, 2976 SR-15, Belle Glade, FL 33430; Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida, Gainesville FL. The use of trade names in this publication is solely for the purpose of providing specific information. UF/IFAS does not guarantee or warranty the products named, and references to them in this publication does not signify our approval to the exclusion of other products of suitable composition. Sugarcane (Saccharum spp.) is harvested during a 5-month period (October to March) in south Florida. Early maturing cultivars milled in October or November may not have reached their peak sucrose content, but may have higher sugar per ton (SPT, lbs sucrose/ton of sugarcane biomass) than other cultivars at the onset of milling operations (Miller and James, 1977). Under current industry milling capacities, harvesting the 450,000 acres of Florida sugarcane takes roughly 5 months. Unavoidably, sugarcane plants harvested during the early harvest period have not yet achieved maximum sugar content. Consequently, sugar content for any given cultivar will change over the course of the harvest season, which can impact the profitability of the harvest. Maturity curves of SPT vs. time have been developed for sugarcane cultivars in South Africa (Bond, 1982), Louisiana (Legendre and Fanguy, 1975; Legendre, 1985; Richard et al., 1981) and Mauritius (Mamet and Galwey, 1999). Although it is known that sucrose accumulation rates vary between varieties, maturity curves for recently released CP sugarcane cultivars (those developed at the USDA-ARS Sugarcane Field Station in Canal Point, FL) have not been reported since 1977 (Rice, 1974; Miller and James, 1977). CP cultivars occupy > 70% of Florida sugarcane acreage, and are also economically important (Tew, 2003) in many countries including Argentina (25% of total acreage), Belize (16%), El Salvador (50%), Guatemala (65%), Honduras (47%), Mexico (15%), Morocco (54%), Nicaragua (75%), Senegal (9%) and Venezuela (9%). Since most sugarcane growers in Florida plant a diverse selection of cultivars, these maturity curves are needed as tools to help growers make informed choices regarding harvest scheduling decisions. This fact sheet presents the sucrose accumulation maturity curves for different crop ages (plant cane, 1st ratoon, and 2nd ratoon) of CP 89-2143. CP 89-2143 harvest samples were collected at 2-week intervals at 5 locations over 4 harvest seasons in the Everglades Agricultural Area. Biomass and sugar yields were determined on all samples in order to

PAGE 2

Sucrose Accumulation Maturity Curves for CP 89-2143 2 generate SPT trends over time. A full comparison of CP 89-2143 SPT trends with 12 other CP cultivars may be found in EDIS publication SS-AGR-221 Maturity Curves and Harvest Schedule Recommendations for CP Sugarcane Varieties (http://edis.ifas.ufl.edu/SC069). CP 89-2143 is grown on 3.5 % of the EAA sugarcane acreage (Glaz and Gilbert, 2003). This clone has shown remarkably high sugar content and better than average tonnage and freeze tolerance. Descriptive information and photographs of CP 89-2143 can be found at http://edis.ifas.ufl.edu/AG137. Figure 1 presents the sugar per ton (SPT, lbs sugar/ton sugarcane biomass) for CP 89-2143 from mid-October to mid-March. Separate curves are presented for plant cane, 1st ratoon, 2nd ratoon, and the entire data set. Research has shown that older ratoon crops generally have higher SPT values but lower tonnage (Glaz et al., 1989; MacColl, 1976). Thus, growers should generally expect the SPT of their sugarcane crop to increase with crop age (see Figure 1). However, the mean SPT of CP 89-2143 remained relatively stable across crop ages, averaging 283 lbs/ton in plant cane, 284 lbs/ton in1st ratoon, and 277 lbs/ton in 2nd ratoon. The overall mean across crop ages ranked 1st out of 13 CP cultivars. Grower recommendations are based on the entire data set across all crop ages. Early-season predicted SPT for CP 89-2143 at the onset of harvest on Oct. 14 was 223 lbs/ton (ranked 1st out of 13 cultivars), and maximum predicted SPT was 308 lbs/ton on Feb. 11 (ranked 1st out of 13 cultivars). In comparison to other CP cultivars, CP 89-2143 has excellent sucrose content throughout the harvest season. Due to its excellent post-freeze characteristics it should be reserved for harvest during the last 50 days of the harvest season (see http://edis.ifas.ufl.edu/SC069). Bond, R.S. 1982. Maturity differences between varieties in the selection programme. Proc. Ann. Cong. S. African Sugar Technol. Assoc. 56:136-139. Gilbert, R.A., J.M. Shine, Jr., J.D. Miller and R.W. Rice. 2004. Sucrose accumulation and harvest schedule recommendations for CP sugarcane varieties. University of Florida Cooperative Extension Service Fact Sheet SS-AGR-221. University of Florida, UF/IFAS Extension Digital Information Source (EDIS) Database. http://edis.ifas.ufl.edu/SC069. Glaz, B. and R.A. Gilbert. 2003. Sugarcane Variety Census: Florida 2001. University of Florida Cooperative Extension Service Fact Sheet SS-AGR-198. University of Florida, UF/IFAS Extension Digital Information Source (EDIS) Database. http://edis.ifas.ufl.edu/SC060. Glaz, B., M.F. Ulloa and R. Parrado. 1989. Cultivation, cultivar and crop age effects on sugarcane. Agron. J. 81:163-167. Legendre, B.L. 1985. Changes in juice quality of nine commercial sugarcane varieties grown in Louisiana. J. Am. Soc. Sugarcane Technol. 4:54-57. Legendre, B.L and H. Fanguy. 1975. Relative maturity of six commercial sugarcane varieties grown in Louisiana during 1973. Sugar Bull. 53(2):6-8. MacColl, D. 1976. Growth and sugar accumulation of sugarcane: II. Percentage of sugar in relation to pattern of growth. Expl. Agric. 12:369-377. Mamet, L.D. and N.W. Galwey. 1999. A relationship between stalk elongation and earliness of ripening in sugarcane. Expl. Agric. 35:283-291. Miller, J.D. and N.I. James. 1977. Maturity of six sugarcane varieties in Florida. Proc. Am. Soc. Sugar Cane Tech. 7:107-111.

PAGE 3

Sucrose Accumulation Maturity Curves for CP 89-2143 3 Richard, C.A., F.A. Martin, and G. M. Dill. 1981. Maturity patterns of several Louisiana sugarcane varieties. J. Am. Soc. Sugarcane Technol. 8:62-65. Rice, E. 1974. Maturity studies of sugarcane varieties in Florida. Proc. Am. Soc. Sugarcane Technol. 4:33-35. Schueneman, T.J., J.D. Miller, R.A. Gilbert and N.L. Harrison. 2001. Sugarcane cultivar CP 89-2143 descriptive fact sheet. University of Florida Cooperative Extension Service Fact Sheet SS-AGR-122. University of Florida, UF/IFAS Extension Digital Information Source (EDIS) Database, http://edis.ifas.ufl.edu/AG137 Tew, T.L. 2003. World sugarcane variety census year 2000. Sugar Cane International March/April 2003:12-18. Sucrose Accumulation Maturity Curves for CP 89-2143.