FUMIGATION OF OENAMENTAL GREENHOUSE PLANTS. 



17 



Table I. — Plants and insects ■fumigated icith hydroeyanic-acid (jas in green- 

 houses — Continued. 



Name of plant. 



Rate in 



ounces 



per 1,000 



cubic 



feet. 



.3 13 



Results of treatment. 



Infestation. 



On plants. 



On insects. 



Lilies: 

 Lilium formosum . . . 



Do 



Lilium muUiflorum . 



Do 



Chinese 



Water 



Loquat • 



Mango 



Do'.'.'.'.'.'.'.'.'.'.'.'.'.'.. 

 Marguerite 



Do 



Marigold (French). . 



Do 



Mignonette 



Mimulus moschatus. 



Do 



Moon vine 



Do. 



Narcissus poeticus 



Narcissus barri 



Nasturtium 



Nigella 



Do 



Oleander 



Do 



Olive 



Orchid: 



Cattleya trianae 



Oxalis (flowering) 



Do 



Palms: 



Areca lutescens 



Chamaerops pumila 



Do 



Cocos sp 



Kentia belmoriana 



Do 



iffitonia sp 



Phoenix canariensis . . . 

 Pandanus grdminifolius . . 



Do 



Pandanus veitchi 



Do 



Pansy 



Do 



Pelargonium odoratissi- 



mum 



Pelargonium sp 



Do 



Pentstemon 



Do 



Persea americana 



Do. 

 Do. 



Petunia 



Poinsettia 



Pomegranate 



Poppy (Shirley). 



73 



55 



Aphids. 



Aphids. 



Aphids 



do 



Hemispherical 



55 

 55 

 55 

 62 Aphids. 



Aphids . 

 do.. 



Aphids . 



No burning... 



....do 



....do 



....do 



....do 



do 



Slight burning 

 No burning.. 



....do 



Slight burning 

 No burning... 

 do 



....do 



do 



....do 



....do 



....do 



....do 



Open flowers 



burned. 

 Flowers and 



buds burned. 

 No burning... 



do 



do 



do 



do 



do 



do 



do 



100 per cent killed. 

 Do. 



Do, 

 Do. 



95 per cent of immature 

 scales killed. 



100 per cent killed. 



Hemispherical 

 scale. 



60 



Avocado white 



fly. 



.do. 

 .do. 

 .do. 



.do. 

 -do . 

 .do. 

 .do. 

 .do. 

 .do. 

 .do. 

 .do. 

 .do. 

 .do. 

 .do. 

 .do. 

 .do. 

 .do. 



Slight burning 

 No burning . . . 



do 



do 



Slight burning. 

 No burning . . . 



Slight burning. 

 No burning . . . 



.do., 

 .do. 

 .do. 

 .do. 



Do. 

 Do. 



75 per cent killed. 



100 per cent immature 

 scales killed. 



All stages except eggs 

 and late pupse killed. 



