[16 



SOME SOUTH INDIAN INSE< rS, ETC. [CHAP. XI. 



tap without any motion or noise to scare the animals, 

 advantage of the smaller patterns of Pressure Sprayers lies in the 



m agitator, but, as there is no risk of spilling thi 

 liquid, it is comparatively simple to give them ■< good shaking by 

 hand before commencing to spray. 



Fig. 5 Holder " Pressure Spi ayei ol I 



Note that only one hand is required to control and direct the spray. 

 Author's original photo.) 



Power Sprayers, in which there is a large tank mounted on a 

 cart and eight or ten nozzles are worked at once at high pressure 

 bj nuans of a petrol or oil motor, are in extensive use in America, 

 but arc not likely to find much scope in India except in special 

 cases, such as large fruit on hards or experimental stations where it 

 ssary to spray large areas. Machines ol this type arc 

 no1 available in India and would require to be ordered specially. 

 They cost from Rs. 1,000 to Rs. 2,000. 



1'hc Selection of Sprayers, 

 Before obtaining spraying machines it is as we'll to have a clear 

 the work which will be required of them in order thai suit- 

 able patterns may be obtained. It is useless to attempt to cover 

 large areas with a small machine and it is equall) wasteful to buy 

 a large machine to do work which could be performed as efficiently 

 by a small one. It is poor economj to save a tew rupees in pur- 

 chasing a spraj ing outfit and to spend a tar larger amount in extra 

 time and labour in applying the sprays. Syringes and Bucket 

 rs are quite suitable lor use in and around the house or in a 

 small garden. Knapsack Sprayers are used in small areas of field 



