Rich, J. R., and R. A. Kinloch. 2000. Comparative responses of cotton yield to preplant and at plant applications of 1,3-dichloropropene. Nematropica 30:223-229. Four field trials were conducted in northern Florida to determine the feasibility of at plant applications of 1,3-dichloropropene (1,3-D) on cotton compared to the currently recommended preplant applications for management of Rotylenchulus reniformis . The 1,3-D was injected 30-cm-deep into a sandy loam soil with a single in-row chisel at rates of 16, 32, and 48 kg a.i./ha 7 to 13 days preplant or at cotton planting. In the absence of damaging initial populations of plant-parasitic nematodes, phytotoxicity in the cotton was not observed in the at plant 1,3-D treatments, and they caused only small reductions in plant stand, plant height, or yield compared with the preplant 1,3-D treatments or untreated controls. In two tests where high initial populations of R . reniformis were present, postharvest nematode population densiti
