- 9 - 



11. In California - "soil fumigation and fertilization affec- 

 ted tree survival." With trees replanted, where trees 

 killed by bacterial canker were removed, "During the first 

 three years after planting, no trees were killed by cankers 

 where soil was fumigated either with DD or Picfume prior 

 to planting. Tree mortality in non-fumigated plots ranged 

 from 25°6 in complete fertilizer plots to 85.9% in low nitro- 

 gen plots. Growth of trees was significantly greater in 

 fumigated plots than in plots not fumigated." 



12. In South Carolina - "October pruning followed by inocula- 

 tion with bacterial canker caused winter injury in addi- 

 tion to typical bacterial canker symptoms. Trees pruned 

 in February and inoculated with the canker organism suf- 

 fered little damage from either winter injury or bacterial 

 canker. It is suggested that trees be pruned only after 

 they are completely dormant." 



Suggestions for Planting and Replanting Peach Trees 



From the many years of research on replant survival of peach 

 trees, some practices are indicated which should improve survival 

 of trees planted in a new location or in a location where trees 

 have died and have been removed. A half-hearted effort will not 

 give satisfactory results. 



The suggestions listed below are the same as those of the 

 Georgia Agricultural Experiment Station Peach Decline Committee. 



New Orchards 



1. Plant where peaches have not been planted before, if at 

 all possible. This gets away from root-attacking soil 

 fungi, nematodes, and other causes of trouble which have 

 built up over the years in the old orchard site. 



2. Plow and prepare soil. 



3. Follow suggestions 2 through 11 in section on Planting an 

 Old Orchard Site. 



Planting an Old Orchard Site 



1. Remove old trees, plow soil, and remove old roots and 

 other debris. 



2. Subsoil before planting. It improves subsurface drainage 

 and breaks up levels of hardpan layers to allow better 

 root development. In the experiments, three subsoil fur- 

 rows were made about 22 inches deep - one in the rows 

 where the trees were to be planted and one 2 to 3 feet on 

 each side. Furrows were in subsoil dry enough to break 

 up well. 



