Effects of Nematicides, Lime, and Herbicide on Peach Tree Short Life in Georgia
AbstractPeach tree mortality was 75% five years after planting on a site associated with peach tree short life and receiving no nematicide treatment, no lime, and with cultivation for weed control. Mortality was reduced to 29% by preplanting plus postplanting applications of DBCP (1,2-dibromo-3-chloropropane) and with herbicidal weed control. Preplanting applications of nematicides alone did not effectively reduce tree mortality or increase yield. Lime applications increased yield but did not affect tree growth or survival. Survival was higher with weed control by a herbicide than with control by disk cultivation. Populations of Macroposthonia xenoplax were correlated positively with tree mortality and negatively with yield. The other nematode consistently present at the site, Tylenchorhynchus claytoni, was not associated with either tree mortality or yield.
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