Bladz.
o.
Oberea lin e a r is I l l , 62
Oïdium T u c k e r i ...................................................................................................... I I , 51
Ophoogen van grond rondom b o om e n ....................................................... 1 , 174
Orgyia a n tiq u a ...........................................................................................................H I , 10<
Oriolus galbula ........................................H I , 12
Ornix g u t t a t a ............................................................. .................................... ...... 1 , 34
Otiorhynchus-soorten...................................................... H I , 4 5 ,4 6
P.
Pai’asieteu...................................................................................................................I , 4
Parmelia parietina H ; ISI
Penieillium g la u c u m ............................................................................................I I , 55
Penseelschimmel (Penieillium) ................................................................... I I , 55
Pentatoma bacearum ..................................................................................... I V , 2
Pereboom (Ziekten en beschadigingen van d e n ) ....................................... 1, 29
P e r e n b la d v lo o .............................. .........................................................................I V , 5
Perengalmug................................................................................................................. IV^> 59 ■
Pei’en rouwm u g ......................................................................... .............................. I V , 60
Perenroest ..............................................................................................................I I , 163
Peridermium Strobi (Cronartium)................................................................... I I , 166
P e r i s p o r i e e ë n ........................................................................................................I I , 55
Peronospora v i t i c o la ......................................................................... ...... I I , 30
X Perzikboom (Ziekten en beschadigingen van d e n ) ...............................1 , 57
P e r z ik b la d lu is IV , 21 \
P h an e ro g am en .............................................................................................................H , 1 ,1 8 3
Ph om a -so o r ten ...................................................... I I , 94
Phragmidium Rubi . . . . ................................................... IT, 158
Phragmidium Rubi I d a e i ....................................................................................H , 157
Phragmidium v io la e eum .................................... I I , 158
Phyllactinia s u f f u l t a ........................................................................................... I I , 50
Phyllobius o h l o n g u s ...............................................................................................I l l , 44
Phyllopertha hortieola • H I , 36
P h y llo s tic ta -so o r te n .................................................................................... I I , 9 2 ,9 3
Phyllosticta juglandina .............................................................• • • ' 61
Phyllosticta Juglandis ............................................................................................ I ) 6
Phvllosticta vindobonensis . . ,........................................................................... I I , 93
Phylloxera vasta tr ix 1^ >
Phytoptus Avellanae..........................................................................................IV >
Phytoptus ( g a lm i j t e n ) ................................... ................................................ I V ,
Phytoptus P i r i ..................................................................................................
Phytoptus R i b i s ................................................................................... I V ,
Phytoptus Vitis ........................................................................IV )
Pieris C r a t a e g i ..................................................................................................
Plaatsprietige kevers...................................................................................... . I l l ,
P la k k e r ..............................................................................................................................’
P la n te n lu iz e n ............................................................................................ I V ,
Plasmodium ......................................................................................H ,
Podosphaera tr id a e ty la ...........................................................................................H>
Podosphaera Oxyacanthae.......................................... H>
P o e d e r k w a s t I >
Poederverstuivers.........................................................................................................I)
Pogonoehaerus hispidus. . *................................................................................ I)
Pokziekte van p e r e b la d e r e n ............................................................. • • I V ,
Polystigma r u h r u m .............................. : H >
P o ly d r o su s -so o r ten ............................................................................................H I ,
Polyporus (geslacht)...............................................................................................H>
Polyporus fom en ta r iu s ........................................................................................H ,
Polyporus h i s p id u s .................................... • • ’ H >
Polyporus ig n ia r iu s ..........................................................................................H j
Polyporus R i b i s .....................................................................................................H>
Polyporus s q u am o s u s ....................................................................................H )
Polyporus sulphureus ...................................................................................H )
P r a c h tk e v e r s ...........................................................................................................H I ,
Pruimeboom (Ziekten en beschadigingen v a n ) .....................................1,
P ru im en b o o rd e r ..................................................................................................... IH)
P r u im e n m o t ...........................................................................................................H I ,
Psylla Piri ...............................................................................................IV >
Psylla m a li. ,
P u c c in ia .................................................................................................. I I ,
Puccinia C e r a s i .......................................................................................................1^4,
Puccinia Pringsheimiana ..............................................................................H ,
Puccinia Pruni ........................................................................H>
Puccinia Ribis ......................................................................................41,
Pu lv é r isa teu r s............................................................................... 4 ,
Pulvinaria r ib e s i a e ...................................................... 4V,
Bladz.
22
76
65
80
77.
75
85
28
96
75
5
51
50
126
127
26
80
99
44
171,175
180
180
180
180
178
178
23
45
42
139
5
5—6
151—156
154
156
154
150
1 2 0 - 1 2 6
58