252 CALIFORNIA FRUITS: HOW TO GROW THEM 



healthy wood and cover the wound with common lead and oil 

 paint, putting on sparingly so as not to How over healthy bark. 



Some years certain varieties in particular are blackened at the 

 pit and rendered unsalable, but the trouble has not thus far 

 proved serious generally, except with certain varieties which have 

 generally gone out of use for that reason. 



The worst injury to tree and fruit is done by what is called 

 the "shot-hole fungus" (coryneum), from its perforations of the 

 leaves as though by a charge from a shotgun. It makes ugly scars 

 on the fruit, which renders it unsalable. The same disease also 

 affects the leaves of cherries and plums. Thorough use of the 

 Bordeaux mixture described in a later chapter will prevent this 

 trouble. 



A disease which is prevalent in some districts of southern Cali- 

 fornia is called "black heart" ; a pith disease which sometimes does 

 great injury. No treatment except that of pruning back to healthy 

 wood has thus far been proposed. Root knot is also a serious 

 trouble of the apricot as of several other trees. It will be con- 

 sidered in the chapter devoted to diseases of fruit trees. 



Until recently the apricot has been generally free from scale 

 insects, and it is not affected by those species which are worst 

 on some other fruit trees, but recently it has been seriously infested 

 in some places with black and brown scales, which w r ill be con- 

 sidered in a later chapter. 



The ripe apricot is sometimes seriously assailed by the diabrotica, 

 a small green beetle, with twelve black spots upon its wing covers. 

 Driving the insects away with smoke smudges has been used to 

 some extent. Fortunately, the insect only occasionally occurs in 

 large numbers. 



Varieties approved by California growers. 



Central Interior 



VARIETIES. coast valley and Southern 



valleys. foot-hills. California. 



Bergetti ** 



Blenhiern 



Early Golden 



Early Moorpark 



Hemskirke 



Large Early 



Large Early Montgamet 



Luizet * 



Moorpark 



Newcastle 



Oullin's Early * * 



Peach ** * 



Royal ** ** 



Routier's Peach ** 



Spark's Mammoth * 



St. Ambroise * 



Tilton * 



Wiggin's Seedling * 



