no 



The Canadian Horticulturist. 



there is seen a transection of a strawberry leaf of which the portion on the 

 left is healthy, and of its usual thickness, while that on the right shows the 

 margin of a " spot," and this portion of the leaf is shrivelled to one-fifth its 

 orginal thickness. At B is seen the reproductive portion of the fungus, 

 known as Conidia. These Conidia are oblong, and very minute, and when 

 they fall on a fresh leaf surface, where there is a little moisture, soon germi- 



^ nate, bore their way through the 



,1^ Z' epidermis C, and give rise to 



( >%wL- fresh spots. 



In addition to this mode of 

 propagation by Conidia, which 

 are summer spores, and are short- 

 >.A lived, there are winter spores, 



grown in sacs, called asci. Each 

 ascus, or sac, contains eight asco- 

 spores, and these are preserved 

 in the dead leaves through the winter, and mature in early spring. 



The remedy for this fungus is twofold, (i) to use fungicides in summer, 

 and (2) destruction of the old leaves in spring by burning over the straw- 

 berry patch. As a fungicide. Prof. Scribner recommends " three ounces of 

 Carbonate of Copper dissolved in one quart of water, which should be 

 diluted to twent}' gallons." This should be spread on the plantation after 

 the crop is gathered, every two weeks until September. 



The Manchester and the Wilson are especially liable to this disease, 

 while the Sharpless, for instance, is less troubled with it, as a general rule. 



Fig. 32. 



STRAWBERRIES— NEW AND OLD. 



TO write about new and old varieties is a large subject for a short 

 paper. The names of the different strawberries that have been 

 introduced in the last ten years would fill a very respectable sheet. 

 Till within a comparatively short period of time strawberries have had 

 but a passing notice. They fought side by side with weeds and grass. At 

 times varieties were very inferior in size ; but now, under better culture 

 and improved varieties, we see immense crops grown for business purposes, 

 yielding millions of bushels to millions of people, proving that man can 

 improve vegetable life to almost any desired point. But the time is coming 

 and is at hand when every farmer shall raise small fruit sufficient for his own 

 use. Strawberries are the first fruit of the season, and followed by rotation 

 red and black raspberries, using early, medium and late varieties of each 

 kind. With some grapes, the small fruits will cover at least a period of 

 three months "during: the summer season. 



