Skip to main content
ARS Home » Southeast Area » Gainesville, Florida » Center for Medical, Agricultural and Veterinary Entomology » Chemistry Research » Research » Publications at this Location » Publication #315314
Title: Response of sugarcane to carbon dioxide enrichment and elevated temperature

Author
item ALLEN, LEON - Retired ARS Employee
item Vu, Joseph
item Ray, Jeffery - Jeff

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 6/2/2015
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Four sugarcane cultivars (CP72-2086, CP73-1547, CP88-1508, and CP80-1827) were grown in elongated temperature-gradient greenhouses (TGG) at ambient or elevated carbon dioxide (CO2) of 360 or 720 µmol CO2 mol-1 air, respectively. Each TGG maintained temperatures in four zones at Base temperature with respect to Gainesville ambient (Zone 1), Base + 1.5 °C (Zone 2), Base + 3.0 °C (Zone 3), and Base + 4.5 °C (Zone 4) via computer-controlled ventilation fans and electric heaters. Elevated CO2 was maintained by injection and feedback control. Germinated sugarcane seed pieces of each cultivar were planted in early March 1997 in 8 tubs in each zone of each TGG. Four tubs contained mineral soil and four contained organic soil. Two tubs of each soil had a high water table (20 cm) and two had a low water table (~50 cm). Biomass harvests were conducted each June and December of 1997 through 2000. Extracted juice volume and Brix were measured from a subset of plants in Zone 1 and Zone 4, and sucrose yield (g per plant) calculated. Over the first six harvests, sucrose was 24% greater in doubled CO2, 23% greater at + 4.5 °C, 36% greater at the higher water table, and 63% greater in mineral than organic soil. Fresh weight harvests were 12% greater in doubled CO2, 4% greater at + 4.5 °C, 10% greater at the higher water table, and 32% greater in mineral than organic soil. Sucrose was promoted more that fresh weight by doubled CO2 and favorable environments.