ETE nS a Tee eee ee 
FUMIGATION OF ORNAMENTAL GREENHOUSE PLANTS. 
13 
'TaBLE I.—Planis and insects funigated with hydrocyanic-acid gas in green- 
houses—Continued. 
Rate in 
ounces 
per 1,,000 
cubic 
. feet.- 
Name of plant. 
Sodium cy- 
anid 
Aucuba japonica.......... 3 
TD YONA SNL Mh A EU it ona 4 
IDX CN OU AUN Ni AAI em a 
Avocado, see Persea. 
JN ANIER GUD oe boo oe eel aes ue 
We AUTOR SHO) cg ates Ole En Va 5 
AD Xo) AT SSP Sen A Rene 
IN) Oe Rie NR) ya TL 2 
EID SSE ACT TI Ge Su! WO 2 
TD XO A aU te Ua mane eal as 
HOD eee alps Pa Tua pd 
BAM DOOR a eas em euro ele aa I Ra 
BS ATA ATTA HHA NUE DC LS | 4 
KO erie ies apa a AME ic? A 3 
IBOSARACUNING SDs sal se Ne shee 
Bees argenteoguttata 4 
i 
nee meni ay 
Begonia diadema.......... 5 
IDX OYA 2 aN aes eee MS HO z 
UDO) ay Wee NaN EE DE = 
JSEQUOMIG: Gonos Mags Se skeen ue 
Begonia manicata......... 2 
HIE) yay ean eit on A 4 
Oe a I ee NM ca i 3 
Begonia metallica.......-- 4 
COV HenIVLA RO Ler UNG eae sede a 
Begonia ricinifolia.......-- 3 
LDN a) dees aN A ec MR aera 3% 
TD YOY aha pe as Dues CP 3 
Begonia saundersoni......- 3 
DD XO) Ay Ao Ay 2 Spe gata) 4 
JD Xo) SR ONS Ra hla Mi amattaae 3 
Dag lee cane 
oo (Leopard).....-. 3 
Boeonie Clordine) aoe Filwiisia 
(Oy Sie ee cats ns ta AD Sa 4 
Begonia (Rex)...........- 3 
COPE ae Pe La 4 
Berberis rehderiana........ 4 
RIB) GE nner, Meal ener sh 4 
Berberis thunbergii........|....-- 
BENDETLS VULGATIS. -. eso |e LS 
EBEHOCTISISD sie eee |e SY 
‘Belladonna yee eee 4 
IDO) as Ses aes Se ears Wael z 
Bougainvillea............- 4 
ID XO Ngee Matera tal CS et we 4 
IDO yaa ias Sit tA Se Mela 3 
ES IROAOH ETI ATO A, a ee peng aN 
BIS OMIVELLORS TOs o epee oe ell aa 
BEUNCHOSIG SIee eye Ne ss ECs 
Butus sp. (boxwood)...--|....-- 
TOYO Bec glean ciel ACCOR ATE Soa Oh 
OB CLUS AIS = Ma TA a a 3 
TD YG). Gee a nel Ra 3 
Waltanlilivg et Nes ee GL 4 
Pp SO SSA Sas NS A SND 2 
catadinin Soa a Me 2 
Chicdne e aan 
On MeliassDaanes wees aeeise $ 
RD ee Mere Ca RMN Be 
Potassium 
cyanid. 
| Exposure in hours. 
et 
ake 
iA 
ex See = | House temperature. 
60 
.| Azalea 
Infestation. 
lace- 
wing. 
Azalea Erio- 
coccus. 
Results of treatment. 
On plants. 
No burning... 
Slight burning 
Slight burning.| 
No burning... 
Severe burn- 
in¢. 
No burning... 
Slight’ burning. 
Severe burn- 
ing. 
Slight burning. 
No burning... 
On insects. 
95 per cent killed. 
100 per cent killed. 
50 per cent killed. 
70 per cent killed. 
<.| 100 per cent killed. 
Do. 
