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Allelopathic, Autotoxic, and Hormetic Effects of Postharvest Sugarcane Residue

^a USDA-ARS Southern Regional Res. Cent., Sugarcane Res. Lab., 5883 USDA Rd., Houma, LA 70360
^b USDA-ARS Southern Regional Res. Cent., Food Processing and Sensory Quality Unit, 1100 Robert E. Lee Blvd., New Orleans, LA, 70124

View larger version (13K): [in a new window]   Fig. 1. Hormetic response of sugarcane bud germination to various concentrations of postharvest sugarcane residue extracts using the equation described by Schabenberger et al. (1999): E[Y|x] = + { – /1 + exp[ßln(x/RD50)]}. E[Y|x] represents the average response at x dosage, and are the upper and lower asymptotes of the response, is the initial slope, ß is the point of inflection of the curve, and RD50 is the effective dosage at which 50% of the total effect is demonstrated. F = 185.9, p < 0.0001, r2 = 0.84, = 225, = 25, = 190, ß = 16, and RD50 = 25.