=,2 THE COXNECTICUT POMOLOGICAL SOCIETY. 



breaking- off the tap root of the plant. That theor\- was 

 wrong, because we always break off the tap root of the plant. 



Dr. Clinton : When you top a plant that has calico, 

 with the same knife that you use on other plants that are 

 healthy you will inoculate the healthy plants. There may be 

 other conditions under which the disease is carried in the field ; 

 some hold it is contagious in other ways ; we are not sure 

 about it. 



Member : I have been a tobacco grower for 30 years, 

 and I never saw a tobacco plant turn calico, as we call it, or 

 gray, after it had been topped. 



Dr. Clinton : Perhaps not the original leaves, but 

 the leaves on the suckers will come so. This disease may be 

 communicated by a knife being used on a diseased plant and 

 then in turn using the same knife on a healthy plant. I have 

 cut the top off a diseased plant and then sterilized the knife 

 before I cut the tops of other plants ; then I have cut healthy 

 plants immediately following the cutting of a diseased plant 

 with the same knife, alternating these two methods ; and 

 when the suckers have grown have noted that the plants that 

 I cut with the knife used upon diseased plants without steriliz- 

 ing were calicoed, whereas the others were not. 



AIember: ^^4^at is the difference between the yellows 

 and little peach? 



Dr. Clinton : The chief difference is that with peach 

 yellows you get the premature ripening, and with the little 

 peach you have the late ripening and the small fruit. The 

 characteristics in the foliage are about the same. 



Mr. Platt: Frequently we have a large, a very abun- 

 dant blossoming of an apple orchard and a small yield of fruit 

 following. Can you explain the cause of this or how it can 

 be remedied ? 



Dr. Clinton: That is a large subject. Years ago out 

 in Illinois I watched an apple orchard through successive years 

 and noted that the trees or branches that bloomed heavily 

 one year did tiot usually bear the next year. Possibly the bear- 

 ing of a tree the previous year may have something to do 

 with it. 



