126 THE HOP 



v/ithout sediment, and should any appear in the 

 stock mixture, reheatnig should be resorted to, 

 and in fact the wash is preferably applied hot. 

 These resin washes, it should be stated, are appli- 

 cable only in regions where there are comparatively 

 long rainless periods, since they are readily washed 

 from the trees by rain. The standard w^ash now in use 

 m the state of Washington consists of six pounds of 

 quassia chips and five pounds whale-oil soap to lOO gal- 

 lons water, and it is said that many growers get excel- 

 lent results from this mixture. 



As to apparatus for the application of these insecti- 

 cides, little need be said. So many excellent machines 

 are on the market that the hop grower will have no 

 difficulty in selecting one suited to his needs and the 

 condition of his finances. Homemade machines con- 

 sist simply of a barrel mounted upon a sled with a 

 pump inserted in its top. Long ^-inch 3-ply hose, 

 bearing "cyclone" nozzles and supported by bamboo 

 poles, afford easy mean? of reaching all parts of the 

 plants. 



Conditions in the Different Hop-Growing Regions — 

 We have referred in our introductory paragraph to the 

 fact that this insect brings about appreciable damage 

 only occasionally. Thus, in the great hop-growing 

 region of central New York there have been no fields 

 totally destroyed by the louse since 1886. In 1891, in 

 the early part of the season, there was a hop louse scare 

 among growers and considerable damage was antici- 

 pated, but with the dry season in July the insects almost 

 entirely disappeared. There have been more or less 

 lice every year since 1886 and some fields have turned 

 out a poor quality of hops in consequence of mold in 

 the burr, caused indirectly by the lice and by damp, 

 warm climatic conditions just before harvesting. It 

 seems to be an accepted fact that those growers who 

 are free from wild plum trees and have their yards on 



