44 



Figure 3. — Knapsack sprayer. 



The bucket pump. — This apparatus is also called a stirrup pump. 

 It is merely a single- or double-acting pump equipped with hose and 

 nozzle (fig. 4) which may be clamped or set in a bucket or tub con- 



Figuke 4. — Bucket pump with hose, extension rod, cut-off, and nozzle. 



taining the liquid insecticide. This type of sprayer is intended for 

 the home gardener. Its chief shortcoming is the fact that the oper- 

 ator must remain stationary while pumping. 



