14 



Abnormal colorings in shades of purplish red sometimes 

 occur following injuries of various kinds. 



PEACHES 



A considerable number of fertilizer tests with peaches 

 are being conducted by the New "Jersey station. Among 

 these is a test of three sources of potash, muriate, high grade 

 sulphate and kainit. Thus far, however, no apparent dif- 

 ferences have appeared between these different treatments. 



Comparative tests have also been made between stable 

 manure and nitrate of soda as sources of nitrogen. 



Statements have been made that stable manure should 

 never be applied to the peach orchard. Such statements 

 should be qualified. Soils poor in organic matter and nitro- 

 gen can be fertilized with stable manure with good results. 

 The grower is obliged to use some judgment in orchard 

 fertilization. If a soil is rich in organic matter and nitrogen, 

 the application of stable manure might prove to be an in- 

 jury instead of a benefit. 



Chemical fertilizers are more economical than organic 

 manures in most instances, but their success is dependent 

 upon a good supply of organic matter in the soil. You may 

 have an abundance of plant food but if moisture is lacking 

 the fruit will be small. Fertilization then is largely a mat- 

 ter of Mdiat your soil needs and what is the most economical 

 source of suppl3^ 



INSECT AND DISEASE TROUBLES 



As practical growers you may be interested in the in- 

 'sects and diseases with which we have to contend, in New 

 -Jersey and what methods of control are practised. 



The more common insects causing injury to the peach 

 are the San Jose scale, peach tree borer and the plum 

 curculio. The bark beetle only causes injury upon weak 

 "trees and the peach aphis is not serious. The San Jose 

 scale is now kept in complete subjection by applications of 

 lime sulphur. 



The best remedy for the peach tree borer to date is a 

 sharp knife and a piece of wire. Numerous materials have 

 been suggested for painting the trunks of the trees to keep 

 out borers but most of these are delusions. Any material 



