New York Agricultural Experimbxt Station. 199 



In May the Macrophnma expelled its spores on pear in the 

 same manner as on apple. (See page 174.) 



In a paper before the Western New York Horticultural So- 

 ciety at its last annual meeting in Rochester, January 23-24, 

 1901, Mr. Albert Wood^^ stated that he has successfully treated 

 the body blight of pear by washing the trunks with a mixture of 

 whale oil soap, copper sulphate, lime and ashes. 



We have searched for Sphwropsis on pear leaves, but found 

 none in Western New York, although some specimens were 

 taken on Long Island. It has not been observed on the fruit. 



Winter and Drought Injury. — In May, ItlOO, a fruit grower 

 at Rushville wrote us concerning the death of some of his pear 

 trees. His orchard consisted of 300 dwarf Duchess pears which 

 had been planted five years and, previous to last year, were 

 thrifty. In the season of 1899, 25 of the trees died, and during 

 1900 about 20 more of them died. The roots were dead, as was 

 also the bark on the trunk as far up as the union. The soil on 

 which the trees stood was a clay loam with a clay subsoil. Most 

 of the dead trees were on three small knolls where the soil was 

 considerably thinner than in the rest of the orchard. 



There was no evidence of fungi or insects. It was evidently a 

 weather injury and probably came about in the following man- 

 ner: The warm, wet autumn of 1898 induced a late growth 

 which made the trees susceptible to winter injury in the severe 

 winter of 1898-9; and some of the injured trees which survived 

 the drought of 1899 succumbed to the more severe drought of 

 1900. The character of the soil was, also, favorable to injury 

 from both freezing and drought. 



On one of the knolls beside the dead dwarf pears there were 



some standard pears which were not killed. However, in the 



Hudson Valley we have observed standard pears on heavy clay 



"soil dying in the same manner and apparently from the same 



cause. 



=«Wood, Albert. Experimonts Avitli Borly Blight on Poar Treos Twelve 

 Years Old. Proceediugs Forty-sixth Auii. Meeting W. N. Y. Hort. Soc, 

 p. 24. 



