. Better fruit. Fruit-culture. Rots starting from mechanical injuries, such damage can be eliminated aim truly judged until it is eaten—and whether it be fit to eat early or late in its season is dependent upon its "keep- ing ; Consider, then, some of the factors that influence the keeping quality of apples—factors that produce storage diseases. There are two general divisions of storage diseases: 1. Parasitic, or those caused by such organisms as bacteria and fungi, or molds. 2. Non-parasitic, or the so-called "physiological ; Those in the latter class are
. Better fruit. Fruit-culture. Rots starting from mechanical injuries, such damage can be eliminated aim truly judged until it is eaten—and whether it be fit to eat early or late in its season is dependent upon its "keep- ing ; Consider, then, some of the factors that influence the keeping quality of apples—factors that produce storage diseases. There are two general divisions of storage diseases: 1. Parasitic, or those caused by such organisms as bacteria and fungi, or molds. 2. Non-parasitic, or the so-called "physiological ; Those in the latter class are frequently not regarded as diseases, but as "condi- tions," but call them what you will, they cause pathological abnormalities. Parasitic Diseases. The parasitic diseases may be classi- fied into two general groups: (1) Those which may be prevented by spraying and good orchard sanitation, and (2) Those which may be prevented by proper handling of the fruit. As an example of the first class we have the Northwestern anthracnosc. This dis- ease is confined to the Pacific North- west and is most serious west nf the Cascades. It is present to some extent in the White Salmon Valley, and it has. Penicilium, known better as "blue mold" rot, a fungous disease that develops in storage. Careful handling is recommended to reduce this trouble to the minimum. as bruises and slight punctures. This type of ost entirely by careful handling. been serious in the Hood River Valley, but it docs not exist, so far as known, in any of the major apple districts of the State of Washington. This disease is caused by the fungus Neofabrxa Mali- corticis, which lives over from year to year in cankers on the branches. Its spores are matured in midsummer, but they require moisture for germination, and hence the disease does not spread before the fall rains. These rains usually begin before the apples are picked, and the fruit therefore may be infected before it leaves the tree. The sp
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