IV 
Diseases 
CONTENTS. 
INUIT MOUS GISCASES | < ..-.5 ai ist msci= = ise eee 
Bacterial diseases... .....-se6 bk AGesecie ee oo sleet Ce ee eae ee enone 
The 
tarred board’ or sticky shieldi22 23.2 sesce sose == eee eee eee 
Warred sledges:..2i.<fc.cse¢ eo see at eee eee eee eee eee se 
Banding with tangletoot ts] se acsssses- eee ce ee 
Destruction of hibernatine bectlesuasee eases asses] see eee eee 
Bordeaux. mixtures s.css 2263 teae tao aseess Soe se aye ee ees 
Bordeaux-tobaccoextract 52 Jas. Syosset aa ns pee ess aise te eee 
Tobacco dustess ae paca eie ooo a se oae ee as eee ee ees 
OUST SION NES: 
PLATES. 
Puate III. Hop leaves, showing effect of attack by the hop flea-beetle (Psylli- 
Odes punclilata) sates 2st < sccis case sees Seals ss ee ale aeleteetee 
IV. Fig. 1.—Hindoo using tarred board and evergreen brush to destroy 
hop flea-beetles. Fig. 2—Method of using light, sticky shield 
and feather duster in combating the hop flea-beetle.....------- 
TEXT FIGURES. 
Fic. 8. The hop flea-beetle (Psylliodes punctulata): Eggs..-..--.----------- 
9; ‘The hop flea-beetlesharva, pupa ss) 222. ae ee oe ee 
10. The hop flea-beetle: Adult beetles, showing relative sizes of female 
ONG WIAlS Ss MeL ANNs Ake Sal a ee ees SNe Mea arte atch eo ee 
11. The hop flea-beetle: Ovipositor of femaleyl2-2. 2-2 eee eee 
12. Filamentous roots of hop vine on which the hop flea-beetle larvee 
2116 ee ee ee He a AKA on Ghee Su ooos 
13. Hindoo using tarred hand sledge for capture of hop flea-beetles ---- 
14. Banded hop vine, showing condition of leaves above and below the 
band) 625.055 2 So eas a Ee en eee ee 
15. Killing the hop flea-beetles in the poles. -.-.-...--.-.--------2.ss- 
16. Fumigating the trellis poles to destroy hop flea-beet'es.....-.-.---- 
17. Rolling the hopyards with heavy roller as an experiment in the con- 
trol of the hop flea-beetle......-- I ib aSS Sd ee else eee 
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