Bladz.
. I l l , 43
. I , 24
. I l l , 4 8 - 5 2
. JI, 165
. I l l , 5
. I I , 105
• I I , 19, 105
. I I , ■96
App elboord er............................................................................................
A p p e lm o t ..................................................................................................
A pp elb lo e sem k ev e r ...............................................................................
A p p e lro e st..................................................................................................
Arvicola am p h ib iu s...............................................................................................HI:
A s c i .......................................................................................................................... I I 9 165
Ascosporen.............................................................................................................. I I > A s c o c h y ta -s o o r te n ............................................................................................I I , ■ 96
A s c om y c e t e n ...........................................................................................................I I ,
Ascus vruchten.................................. I I ,
Aspidiotus o s t r e a e fo rm is .................................................................................. Aspidiotus p e r n ic io su s ........................................................................................ ,4 3
Asteroma-soorten.......................................................................................................I I ,
Atmospheer (giftige stoffen in d e ) .................................................
Aurelia (de g r o o t e ) .............................................................................................. H I ,
B.
Bacillus amylovorus............................................................................................H
Balaninus nucum..................................................................................................H I ,
Barsterigheid van de p e r e n .............................................................................. H ,
B a sid io sp o r en ......................................................................................................
B a s ta a r d r u p s e n .....................................................................................................HI;
Bastaardrups, slakvormige............................................................................... H I ,
Bastaardsatijnvlinder...............................................................................................H I
Bekerroest, Bekerroestsporen.............................................................
Bessengaatjespaddestoel..................................................................................... I I ,
Bessenziekte in den B a n g e r t ......................................................................... I I ,
B e ssenw o r te llu is.....................................................................................................IV ,
Bestrijdingsmiddelen................................................................................
Bevriezen van p la n t e n ......................................................................................I ,
Bevroren b l o e s em s ...............................................................................
Bevroren bast en h o u t ............................................................................................ I ,
Bitterrot der a p p e l e n ......................................................................... II
Blaaszwammen (A s c om y c e t e n ) .................................... «H „Blackrot” ..............................................................................................................I ,
Bladgroenhoudende w o ek e rp lan ten .................................................
B la d lu iz e n ..............................................................................................................I V ,
Bladnerfdoorsnijder...............................................................................
Bladvlekken bij moerbeien............................................................................... I I ,
33
. I I , 25
. IV ,
42, 47
• IV , 2 5 ,2 8 , 43
95
• I , 171
87
• I I , 12
52
. I I , 65
169
74
. I l l , 78
. I l l , 102
. I I , 150
. I I , 180
. I I , 122
21
. I , 107
. I , 153
1 6 1 -1 6 B
. 163
• I I , 91
. I I ,
27
73
• I , 4
14—19
. I l l , 40
. I I , 92
IH:
Bladz.
Boomschaar
Braambessengalmug (Lasioptera Rubi)
c.
Cecidomyia Pruni
IV , 4
H I , 118-- 1 3 5
H I , 74-- 8 2
H I , 80
H I , 117
I , 96-- 9 8 , 129
IV , 14-- 1 9
H I , 48-- 5 2
I I , 42
H I , 62
I , 40
I , 105
H I , 73
IH , 32
I I , 127
I I , 127
I I , 63
I I , 158
I , 70
IV , 90
IV , 90
I , 50
I , 70
H I , 21
I I , 158
I I , 21
H I , 133
H I , 124--1 3 3
I I , 3 3 --4 5
IV , 59
I , 34
I , 50
I , 33
I , 42
I , 49
IV , 3
IV , 3