Normal Institute 1605 



second in Jnly. Every tree should be carefully inspected, and if 

 any slits in the bark are found or dead patches of bark, the dead 

 bark should be cut away and the openinj*; thoroughly disinfected 

 with a weak solution of corrosive sublimate and covered with 

 grafting' wax if the tree is small, or if large, with gas tar or red 

 lead paint. This protection will save the trees in the majority of 

 cases. If neglected, the rot starts and the tree may bo ruined. 

 The disinfection of the wound is very important; otherwise the 

 spores of the a^ijile canker may get into the opening. Use corro- 

 sive sublimate 1 to 1000. 



RASPBERRY ANTIIRACNOSE 



This disease causes spots to appear on canes and stems of rasp- 

 berries. 



Experiments for its extermination have been decidedly without 

 results, and no treatment can be recommended. Spraying young 

 canes four or five inches high and at successive short intervals vdth 

 bordeaux mixture seems to be somewhat effective, but rather ex- 

 pensive. 



CHESTNUT BARK DISEASE 



'No remedy for this has been found. Trees found to be infected 

 should be cut immediately in order to save the w^ood. In western 

 Pennsylvania it has been discovered that some of the so-called 

 infections are not true chestnut bark disease. 



POTATO SCAB 



The formaldehyde gas treatment for potato scab is liable to in- 

 jure the tubers, yet its use has been recommended as a preventive 

 of scab. Kecent tests show that the use of the gas treatment is 

 dangerous and it is not recommended. 



POTATO BLIGHT 



There are three or four kinds of rot that affect potatoes, but 

 most of the rot prevalent in this state is that produced by late 

 blight. Potato rot is caused primarily by the fungus, Phijtophtliora, 

 and wet w^eather is very favorable to the growth of the fungus. 

 Thorough spraying will beyond all doubt prevent rot. Bordeaux 

 mixture should be used (.5-5-50) and spraying commenced when 

 the plants are six or eight inches high. Spraying should be thor- 



