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United States Department of Agriculture

Agricultural Research Service


item Morris, Dolen
item Glaz, Barry
item Powell, Gerald
item Deren, Chis
item Snyder, George
item Perdomo, Raul
item Ulloa, Modesto

Submitted to: American Society of Sugar Cane Technologists
Publication Type: Abstract Only
Publication Acceptance Date: 5/30/2002
Publication Date: 6/26/2002
Citation: Morris, D.R., Glaz, B.S., Powell, G., Deren, C.W., Snyder, G.H., Perdomo, R., Ulloa, M.F. 2002. Sugarcane leaf p diagnosis in organic soils. American Society of Sugar Cane Technologists. 65(1): P. 22-23.

Interpretive Summary: Sugarcane is grown mostly on organic soils in south Florida. Phosphorus is an essential plant nutrient for high sugarcane yields, but producers are required to reduce P levels in water ways. One way to monitor P uptake in sugarcane is through leaf diagnosis. The objective of this study was to determine the best time to leaf sample during the summer months and to relate optimum leaf P tissue content and yield. A 3-year field study was conducted on four organic soil locations in south Florida. An 8 by 3 factorial experimental design with four replications was used at each location with eight sugarcane (interspecific hybrids of Saccharum sp.) genotypes in combination with three fertilizer P rates (0, 24, and 48 kg P ha-1). Upper-most fully expanded leaves were sampled in early, mid, and late summer prior to three harvests (plant cane, first ratoon, and second ratoon). Even though sugarcane yields increased with increased P fertilizer rates at three location, there was no consistent pattern relating leaf P tissue content with yields. Optimum leaf P tissue content should be calibrated for each field, harvest, and sampling date.

Technical Abstract: American Society of Sugarcane Tech. meeting at Amelia Island Plantation, Florida on June 23-30,2002

Last Modified: 07/21/2017
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