186 State Horticultural Society. 



pay to replant where trees have died from root rot or some other 

 disease? It might reasonably be expected that if a tree dies from 

 root rot that another tree set in the same place would be almost cer- 

 tain to take the disease and die also. So far as our experienc3 

 goes, however, one is frequently able to replant where a trea has 

 died from such diseases and have the replants show no signs of in- 

 jury. Some five or six years ago the writer replanted two hundred 

 trees in a comparatively young orchard, where two hundred trees 

 scattered about here and there had died from root rot. It was ex- 

 pected that many of these replants would succumb to the disease. 

 As a matter of fact, however, in this particular instance, every one 

 of the two hundred replants lived and did well. In considering the 

 advisability of replanting where root rot or similar disease exists, 

 it would seem to me well to bear in mind that the fact that the sus- 

 ceptibility of the trees to root rot depends very greatly upon their 

 being in healthy, vigorous condition. So far as the writer's obser- 

 vations go, trees are most likely to succumb to root rot when they 

 have been winter-injured in the nursery. If trees have been in- 

 jured even slightly by a cold, severe winter, so that any trace of 

 brown color due to drying out is observable in the wood of their 

 twigs, they are usually very susceptible to the disease if planted 

 M^here the infection can occur. If trees have passed the winter in 

 splendid condition, however, and if conditions are favorable to good 

 growth after they are planted, frequently one may replant where 

 trees have died of root rot and have a large percentage of the re- 

 plants live. Wherever trees have died, then, from this disease, I 

 would advise that replanting be done only when the trees to be re- 

 planted are in the very best condition. I would rather wait a year 

 to get trees that are vigorous, or to get those that have been kept 

 from winter injury in storage, than to plant directly from the field 

 with trees that have been subjected to an unusually severe or try- 

 ing winter. 



After the orchard is five years of age, it is a question as to 

 whether it is best to replant where a single tree dies out. This de- 

 pends somewhat upon how far apart the trees are and whether they 

 are a long-lived variety. If the trees are planted twenty-five feet 

 apart each way or less, and only a single tree in a place dies, it is 

 perhaps not worth while to replant after the fifth year. If the trees 

 are farther apart than this, or if they are of a slow-growing and 

 long-lived sort, replanting may be continued a few years later. If, 

 however, a comparatively large number of adjacent trees die out, 

 leaving large openings or gaps in the orchard, it is usually best to 



