ISHS Acta Horticulturae 44: IX International Symposium on Fruit Tree Virus Diseases
SPREAD AND CONTROL OF PRUNUS STEM PITTING |
| Authors: | R.F. Stouffer, D.M. Soulen, S.H. Smith |
| Abstract:
Prunus stem pitting symptoms were observed in peach seedlings following inoculation with various isolates of tomato ringspot virus (TomRSV). The disease was transmitted through infested soil and was experimentally transmitted by mechanical inoculation, by budding, and by the nematode, Xiphinema americanum. There are no other known aerial or soil vectors. The virus apparently was not uniformly distributed throughout affected trees, especially those that became infected after they were mature. There is no evidence that the Prunus strain of TomRSV is transmitted through peach pollen or seed. Prunus necrotic ringspot virus may be associated with pitted peach trees but is not responsible for the pitting symptoms. Prunus stem pitting has been controlled under nursery conditions by preplant soil fumigation with Dowfume MC-33 (67% methyl bromide plus 33% chloropicrin) at the rate of 350 lbs/acre (397.75 kg/hectare). Economically feasible orchard control methods are not yet available. | |
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