316 DISEASES OF TROPICAL PLANTS 



Root diseases, 232, 244 



of banana, 136 



of cacao, 189 



of coffee, 168 



of fig, 143 



of rubber, 195 



of sugar cane, 90 



of tea, 177 



Root galls of sugar cane, 95 

 Root knot, 115 

 Root rot of olive, 146 



of orange, 126 



of palms, 206 



of peas, 231 



of tobacco, 149 

 Roots, 13, 15 



Rosellinia, 50, 143, 169, 177, 196 

 Rosette of tomato, 219 

 Rostrella, 50, 167 

 Rot, 9, 30 



of banana, 133, 135 



of beans, 230 



of cabbage, 233 



of cacao, 180, 188 



of coffee, 166 



of egg-plant, 222 



of tig, 141 



of guave, 144 



of nialaga, 239 



of mulberry, 246 



of onion, 234 



of orange, 120, 126 



of passion vine, 242 



of pea, 231 



of pine apple, 130 



of potato, 210 



of roots, 115 



of seedlings, 106 



of sugar cane, 79 



of sweet potato, 34, 237 



of taro, 239 



of tomato, 213 

 Rotation of crops, 270 

 Rubber, diseases of, 191 

 Rusts, 63 



of bean, 229 



of corn, 96 



of cotton, 109, 114 



of fig, 138 



of peanut, 231 



of sugar cane, 87 



of tea, 174 



Salts, 18 



Sandal wood, diseases of, 247 

 Saprolegniales, 12, 20, 22 

 Scabby pod of cacao, 182 

 Scab of banana, 135 



of lemon, 119 



of potato, 211, 280 



Scald of pine apple, 132 



of potato, 209 

 Scally bark of orange, 124 

 Schizophyllum, 66, 86 

 Sclerospora, 39, 97 

 Sclerotinia, 51, 130, 234, 236 

 Sclerotium, 168, 217, 225 

 Scurf of orange, 130 

 Seed beds, 35 



of tobacco, 148 



treatment, 281 

 Seedling disease of cacao, 189 



of rubber, 194 

 Seedling rot of cotton, 106 

 Seedlings, diseases of, 259 

 Seed plants, 68 

 Septogloeum, 58, 232, 246 

 Septoria, 60, 122, 154, 219, 237 

 Shedding of cotton bolls, 114 



of fruit of egg-plant, 223 

 Shot hole, 172 



Sleeping sickness of tomato, 21 5 

 Slime moulds, 12, 67 

 Smothering plants, 254 

 Smut, 9, 61, 280 



of corn, 95 



of palms, 203 



of sugar cane, 79, 87 

 Soft rot of sweet potato, 238 

 Soils, 77 

 Sooty mould of orange, 122 



of sugar cane, 86 

 Sore shin of cotton, 106 

 Spermatophyta, 12 

 Sphaerella, 50 

 Sphaeriales, 42, 49 

 Sphaeronema, 59, 86, 237 

 Sphaeropsidales, 58 

 Sphaeropsis, 60 

 Sphaerostilbe, 48, 162, 262 

 Spike disease of pine "apple, 131 



of sandal wood, 247 

 Spores, 23 



distribution of, 26 



germination of, 27 

 Sporocarp, 26 

 Spots, 9 

 Spraying, 272 

 Spraying apparatus, 286 

 Starch, 18 

 Steeps, 280 



Stem bleeding of palms, 205 

 Stem blight of egg-plant, 221 



of tea, 176 

 Stem disease of coffee, 167 



of rubber, 193 

 Stem rot of egg-plant, 222 



of potato, 210 

 Stems, 13, 16 



dicotyledonous, 16 



