• FOURTEENTH ANNUAL MEETING. 155 



The peach was very sHg-htly injured, the cherry and phnn not 

 at all. On August 22, another peach tree was sprayed and 

 only slight leaf injury followed. 



10 PER CENT. K-L. WITH RoSIN SoAP. 



The spraying was done July 2 on a pear tree about 14 

 years old. There was a very bad infestation on limbs, leaves 

 and fruit, the latter being already badly injured. The mix- 

 ture spread ideally and covered all parts of the tree. On 

 July II the material was sticking perfectly and had been 

 most efficient in killing the insects. Those on the leaves were 

 apparently all killed, as w^ere also most of those on the fruit 

 and limbs. Ten days later the tree was still coated with 

 spray except on the north side, where the whipping of the 

 wind and the beating of the rain had loosened it. The fruit 

 was cleaned up nicely and the crop was saved. The scales 

 seemed to be dead, except on a few places on the north side 

 where they were massed and clustered together on short rough 

 spurs, where the spray had been rubbed off. There were a 

 few old ones with a few young produced since the spraying. 



Because the spray was whipped from the north side this 

 portion of the tree was treated again July 21. The very 

 rough bark and the thick matting of scaly coverings protected 

 a few old females, which began to produce young about 

 August 10. The entire tree was sprayed August 15, but this 

 application was not so efficient as the first had been. There 

 was a slight scattering of young on the rough bark ten days 

 later. No more spraying was done and there is quite a 

 sprinkling of scales on the tree at present. 



Another badly infested pear tree was sprayed on July 12 

 and on August 10. Within an hour after the first spraying 

 a heavy rain fell and a few hours after the second application 

 a terrific storm swept over that section. Under these condi- 

 tions the treatment was only partially effective. 



The 10 per cent. K-L with rosin soap was sprayed on 

 cherry and peach foliage without causing injury. 



10 PER CENT, K-L. 



A pear tree similar to the last, but with extra rough bark 

 entirely plastered with scales, was sprayed three times, June 



