Pea Thrips 
Peas, insect enemies of ............... 
Pear, insect enemies of ... 
Pear Midge .............. 
Peat, bacterised 
Pebrine in silkworms 
Peony 
Perennials 3 
Phosphorie Acid, importance of... 14 
Phytophthora compared with 
Phythium 
Riaiephitora, conidia 
disease in Asters 81, 83 
growth from diseased 
tubers ... 77 
hibernation ............ 77 
PRJEMENE — sinsveressereree 73 
initial infections ... 77 
resting spores on 
artificial media 77 
10 
Pieris brassicae and P. rapae ...... 7 
Pines PUSt  sunisrcanimvcsmmaremcsntanian 93 
Pipit ... 120 . 
Plant TACO cosevsnosncnpiageniagowinoncoee signs 121 
Plasmodiophora Brassicae ......... 65, 66 
Plasmodiophora compared with 
Plum Aphides 
Plum, insect enemies of 
Pollination 
Potash, importance of 
Potato 
hak 108, 122 
37 
cut for “sets” 
disease, resistant varieties 79 
disease eet . 13 
grown in the 27 
attacked by Wireworm 112 
attacked by Millipedes.... 131 
Black Scab or Wart 
disease 70 
Black Speck or Violet 
Rhizoctonia disease 71 
control of scab diseases 
Brown Scab or Ordinary 
Scab ...... 72 
mechanical irritation 
Spongy or Powdery Scab... 72 
Potatoes, 
StOTASE assinccancasnanawerincien ae 76 
Precautions against late blight 
Gisease getwigeswenereraesnermyonncemereness 78 
Predaceous Insects ........... 131, 132 
Primrose, Jack-in-the-Green _...... 51 
Pruning  cisiivoviesacwemsserwesesrsverare 34 
Pruning against “big bud”’ ...... 104 
Pruning against Currant Aphides 125 
Pythium compared with Plasmodio- 
phora 
Puceinia graminis 
menthae 
Aecidiospores in 
PAGE 
Puccinia menthae 
Teleutospores iN we... 94 
Uredospores in 94 
Pulvinaria vitis eet 
PUPS. suwitamuceis . 105 
Puparium . 113 
Psylla madi oe ccessecseesesseceeseesseeees 126 
Pythium compared with Phyioph 
TAGE 6 guasnannniraenncisanite 
Pythium de Baryanum 
Life History ... 61, 
Pythium, resting spores 
reproduction 
Quassia and Soft Soap spraying ... 125 
Quicklime as a fungicide 0 
cae 69, 
Radishes, insect enemies of: 
Recessive characters 
Red currant, layering of 
Red Spider 
Reproduction, vegetative 
Respiration of plants, see breath- 
ing 
Resting filaments of 
melonis 
Resting spores 
Retarded crowns 3 
Rhizoctonia violace@ ... ccc 71 
Rhopalosiphon ribis 
DACING. © sig scacieoracinisinsonagypenenisaregeaksyiris 16 
Ringing 30 
RODIN, sssiseaanrenainecnreece 98 
ROOK. sreecavangiisnaavgrars 98, 99, ar 
Root, absorption by... 
cuttings... a 
hairs... 10 
pressur2 9 
PTUDING secspacvn cers sveys . 34 
tips, sensitiveness of 4 
tubercles .. 12 
Rose Aphides » 122, 123 
Rose mildew ............:ceeccececeeeseeeeees 87 
Rotation of crops. ........... 15 
Rotation of twining stem 19 
RUNMNETS: — sesasweenvensmaersanany 29 
Russell, E. J. es 
Rust of wheat. ......... . 90 
Rust on gooseberry ..... . 93 
Rust resistant wheats 93 
FRUIBES!  cscccuencusilge. soit 89 
Ruston, A. (Ge. scnisinsciwanranoninncssicsnete 56 
oaeheeseen Lal al auc eamenia enleeiandainpaaiaesomet a 
APTOPhytes. .acseesessvieis ceomverersieeres 
BawAy  srisssacwwers 110, 130 
Scale Insects ... 
Enemies of 
Scattering of spores 
