FUMIGATIOlSr OF ORNAMEISTTAL GREENHOUSE PLANTS. 



19 



Table II. 



-Plants and insects fumigated with hi/drocyanic-acid gas in 

 fumigation box. 



Name of plant. 



Rate in 

 ounces 



per 1,000 

 cubic 

 feet. 



6.-3 

 .3 3 



.3^3 



Infestation. 



Results of treatment. 



On plants. 



On insects. 



A Iternanthera sp 



Do 



Amaranlhus sp 



Arenga mindorensis. 



Atalantia glauca. . . . 

 Do 



Banana 



Do 



Belouglutinosa 

 Carnation 



Catha edgmutUi. 

 Croton 



Do 



Do 



Ferns: 

 Boston 



Do. 

 Do. 

 Do. 



2h 

 5' 

 10 



5 



n 



10" 



Do 



Adiantum cuneatum. 



Do. 

 Do. 

 Do. 



Nephrolepis whitmanii 



Opuntia 



Do --. 



Orcliids (in growing con- 

 dition) : 

 Angraecum eburneum. . . 



Cypripedium sp 



Coelogyne flaccida . . . 



Coelia baueriana 



Dendrobium fimbrica- 



tum. 

 Schomburgkia undulata . 

 Orchids (dormant): i 



Cattleya trianae 



Cattleya sp 



Do 



Do 



20 



Osbeckia stellata 



Palms: 

 Kentia belmoreana. 



Areca lutescens. 



Cory phi elata . . . 



Phoenix sp 



Pandanus veitchii . 



5 

 10 



34 



5 



5 



10 

 10 



5 



10 

 5 



2i 



Long scale. 



Citrus mealy 



bug. 

 do 



Long scale . . . 



do 



do 



do 



Larvae Florida 

 fern cater- 

 pillar. 



do 



do 



do 



Aspidistra 

 scale. 



Larva3 Florida 

 fern cater- 

 pillar. 



do 



do 



do 



.do. 



Diaspis sp. 



Chaff scale. 



Lepidosaphes 

 sp. 



Long scale 



Palm mealy- 

 bug and palin 

 aphids. 



Tessellated 

 scale. 



Florida red 



scale. 



No burning . . 



do 



do 



do 



do 



.....do 



Tender foliage 



burned. 

 No burning . . 



do 



Tender foliage 



burned. 

 No burning. . 



do 



do 



do 



-do. 



do 



do 



Tender growth 



burned. 

 No burning.. - 



do 



do 



do 



Tender growth 



burned. 

 No burning.. 



do 



do 



Slight burning 

 No burning... 



do 



do 



do 



100 per cent killed. 



Do. 

 95 per cent killed. 



60 per cent killed. 



Do. 

 100 per cent killed. 



Do. 



40 per cent killed. 



100 per cent killed. 

 Do. 

 Do. 



All stages except 



killed. 

 40 per cent killed. 



100 per cent killed. 

 Do. 

 Do. 



Do. 



Do. 

 Do. 

 Do. 



-do. 



do 



do 



do 



Slight burning 

 plant recov- 

 ered. 



No burning.. 



do 



Old foliage 

 burned. 



No burning 



do 



do 



Do. 

 Do, 



Do. 

 Do. 

 Do. 



1 Imported orchids without new growths. 



