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The effects of rootstock, pruning, and preplant soil fumigation on floral bud dormancy status and shoot cold hardiness of 'Redhaven' peach (Prunus persica (L.) Batsch) trees were monitored. Dormancy status, expressed as percent floral bud- break, was significantly affected by rootstock and pruning, although differences were small. In late January, significant interactions occurred between rootstock and pruning treatments, as well as between pruning and soil treatments. Pruning of trees on Lovell rootstock resulted in significantly lower budbreak as compared to trees on Nemaguard and unpruned trees on Lovell. Also, for trees pruned in December, higher budbreak was associated with those growing in fumigated vs. nonfumigated soil. Treatment ef- fects on dormancy status did not correspond with treatment effects on hardiness. In fact, differences in hardiness were minimal and probably not biologically meaningful. Factors known to predispose trees to peach tree short life (PTSL) include, but are not limited to, a high population of ring nema- tode (Criconemella xenoplax (Raski) Luc and Raski), pruning in October through January, and rootstock (Brittain and Miller, 1978). Although the ultimate cause of death remains uncertain, the role of freeze injury in the occurrence of PTSL has been emphasized in the southeastern United States. Treatments associated with increased survival have also been reported to result in greater cold har- diness of peach shoots on a PTSL site (Nes-

Rootstock, Pruning, and Soil Fumigation in Relation to Dormancy and Cold Hardiness of `Redhaven' Peach