add much plant food and humus to the soil and are necessary. 
Commercial fertilizers ave depended upon to supply what is 
Still needed. Tf a regular svstem of fertilizing and cover- 
cropping is followed, the fertilizer ought to be applied when 
the ground is fitted for the cover crop seed in August. In 
other practices it should be applied eariy in the spring. A 
well regulated system of cover cropping should, in most cases 
supply all of the plant food elements necessary, without the 
application of the commercial fertilizers. 
Straying is a hitherto much neglected opperation in 
Maryland, tut its importance is beng recognized, and many of 
the srowers are spraying their orchards carefully, It is 
bevond the scepe of this article tc go inte the detaiis of 
Spraying, bwt 8 idea ¢f the value of this prectise sicy be 
geined from the following article taken from Bulletin Number 
14° of the Mervland Arricultural Experiment Station. 
"The profits from spraving are even harder to estimate 
than the cost of the operation. In “he experimental orchard 
et VMarshell Hall in 1908, the crop of apples frem the unspray- 
ed trees was negligeble, scarcely worth. the picking, while on 
the trees spraved, even those which recieved but ¢ single 
(=3%-) 
