July 28, 1917 



II K T 1 C U L T U R E 



95 



PUBLICATIONS RECEIVED 



The Fumigation of Greenhouses is 

 the subject treated by E. N. Cory in 

 Bulletin 205 of the Maryland Agricul- 

 tural Experiment Station. Records are 

 given of many experiments on flower 

 and vegetable crops under varying con- 

 ditions. The following summary of 

 various doses of cyanid on plants as 

 listed will be found instructive; 



Summary of the Effect of Various 

 Doses on Plants. 



Tomatoes: — Tomatoes will be in- 

 jured by a dose stronger than Vtt of 

 an ounce of potassium cyanid to the 

 1,000 cubic feet air space, in a day 

 fumigation under the conditions given 

 above. They will stand at least J^ ot 

 an ounce in a night fumigation. 



Snapdragons: — Snapdragons will 

 stand Vb of an ounce in day fumiga- 

 tion and % of an ounce at niglit. 



Roses: — The young shoots of roses 

 will be injured by a dose stronger 

 than 5/16 of an ounce in both night 

 and day fumigation. The older leaves 

 will be injured by a dose stronger than 

 this in the day but will stand ;s of an 

 ounce at night. 



Chrysanthemums: — The tender tips 

 of chrysanthemums will not be in- 

 jured by -js of an ounce night fumiga- 

 tion. This dosage used in the day 

 time will injure the plant. 



Carnations: — Carnations will stand 

 % of an ounce. 



Lily of the Valley: — The flowers of 

 these plants will not be injured by a 

 dose of % of an ounce, and the leaves 

 will not be injured by a dose of 7/16 

 of an ounce. 



Asparagus plumosus:— A dose of % 

 of an ounce will not injure the tips of 

 these plants. 



Lantanas: — Lantanas will stand a 

 dose of "s of an ounce without in- 

 jury in a night fumigation, but will 

 be injured by a dose stronger than 

 5/16 of an ounce in a day fumigation. 



Cyclamen: — Cyclamen will not be 

 injured by a dose of y^ ounce in a 

 night fumigation. 



Ferns: — The tips of ferns will not 

 be injured by a dose of 7/16 of an 



CONCENTRATED PULVERIZED 



MANURE 



Tulverlzed or Shr«dded 



Cattle Manure 



Pulverized 



Sheep Manure 



The FVjnsts' stan<iard o( uotfiirm 

 high quality for over ten yeatf-. 

 Specify: WIZA.RD BRAi*D in 



yiiur Supply House crder, or \wrtr 

 us direct fnr prices and freiijht rates 



THE PULVERIZED MANURE CQ. 



M CbI*b S*»«k Tard, CUrnkgrn 



ounce. A higher dosage than this will 

 injure the tips and white spots will 

 be produced in the leaves. 



Geraniums: — A dose of Va of an 

 ounce will not injure these plants. The 

 injury by larger dosages is evidenced 

 by yellow spots on the leaves. 



Asparagus sprengeri: — A dose of % 

 of an ounce can be used without in- 

 jury to these plants. 



Lettuce: — Lettuce will not be in- 

 jured by 3/16 of an ounce. Just what 

 dosage it will stand was not deter- 

 piined, because the cbnditlons wlere 

 not favorable for growing lettuce. 



Coleus, hybiscus, crotons, begonias, 

 pansies, hyacinths, scarlet sage, palms 

 and radishes will stand a 1 ounce 

 dosage without injury. 

 Summary of the Effect of Various 

 Doses on Insects. 



Aphids: — Nectarophora rosae Linn, 

 and N. chrysanthemicolens Will, and 

 most other aphids will be killed with 

 3/16 of an ounce of potassium cyanid 

 to the 1,000 cubic feet. 



ThWps: — The greenhouse thrijps, 

 Euthrips haemorrhoidalis Bouche will 

 be killed with »/, of an ounce. Re- 

 peated fumigations with 7/16 of an 

 ounce will also kill them. 



Mealy bug: — Mealy bugs, Pseudococ- 

 cus citrl Risso, which are not in 

 masses will be killed by y, of an ounce 

 Repetitions of this dosage will kill 

 all bugs even in masses. 



Red spider: — Some red spider, Tet- 

 ranychus telarius Linn, will be killed 

 by i/o ounce and repeated fumigations 

 will probably kill all. 



Scale: — The scales, Saissetia hemis- 

 phaerica Targ. and Coccus hesperidum 

 Linn, on palms and crotons were killed 

 by one (1) ounce dose. 



White fly: — The greenhouse white 

 fly. Aleurodes vaporariorium West, was 

 killed by a dose of 3/16 of an ounce 

 in night fumigation. 



In fumigating with the doses recom- 

 mended above, the foliage should be 

 dry, and atmosphere as dry as possible. 



Temperature is the most important 

 factor as demonstrated by these re- 

 sults. Plants should be fumigated in 

 a house with as low a temperature as 

 is consistent with good cultural prac- 

 tice and in absence of light. 



The Brooklyn Botanic Garden Record 

 for July contains the addresses de- 

 livered at the dedication of the new 

 Laboratory Building and Plant Houses 

 and other papers of much interest. It 

 is edited by C. Stuart Gager. 



Transactions of the Massachusetts 

 Horticultural Society for the year 1917, 

 Part 1. The Transactions of the So- 

 ciety are issued annually in two parts. 

 The present issue covers the period 

 from January 1 to June 30, 1917, and 

 comprises tlie account of the inau- 

 gural meeting and the horticultural 

 lectures in full as delivered in the 

 winter course. 



CATALOGUES RECEIVED. 



John Lewis Childs. Flowerfield, N. Y. 

 —Fall Folder for 1917. Gladioli, Irises, 

 Peonies, Lilies, etc. 



Elizabeth Nursery Co., Elizabeth, 

 N. J.— Illustrated Price Sheet of Nov- 

 elties and Specialties. 



Co. 



Th« Becornized Standard In 

 A spray remedy for green, black, wkMa tf, 

 thrlps and soft scale. 



Qoart, n.OO; OaUon, «»4*. 



FUNCINE 



For mildew, rait and other bU(kta 

 I'tr Vrvers, fmlts and TefetabU*. 

 Qaart, tl.OO; Gallon, WJ*. 



VERMINE 



For eel worms, angle worms ibI 

 worms working In the soil. 



Quart, fl.OOs OaUen, |t.M. 



SOLD BT DKAUBS. 



Aphine Manufacturing 



MADISON. N. J. 



vStANDA-^^ 



JUB' 



Sare your plants and trees. Jvct Uw 

 thing for ereenhouse and oatdoe* uM. 

 Destroys Mealy Bug, Brown and Whits 

 Scale, Thrlps, Red Spider, Black and 

 Green Fly, Mites, Ante, etc., wltbo«t 

 Injury to plants and without odor. 

 Used aocordlng to direction, oar stand- 

 ard Insecticide will prevent ravage* <m 

 your crops by Insects. 



Non -poisonous and harmless to nMr 

 nnd plant. Leading Seedsman and 

 Florists have ased It wltb nonderfal 

 results. 



Destroys Lice In Poultry HoiuM^ 

 Fleas on Dogs and all Domestic VH*. 

 Fxcellent as a wash for dogs and otbo 

 animals. Relieves mange. DUot* wltk 

 water 30 to 50 parts. 



V^ Pint, 2So.; Pint, 40o. : Quart, ICSki 



M.. Gallon, $1.2«: Gallon, <1 1 S Oal- 



Ion Can, }9; 10 Gallon Can, (IIJ*. 



IXrectlonN on paokaffe. 



LEMON OIL COMPANY 



DepL :. 420 W. Lailodtn St. BittiMn, HI 



^ 



IMP. 

 SOAP SPRAY 



Quarts, 55c. Galloos, $1.06 



Fives, $6. SO 

 Trj with *4 parts water. OftMi effeatlva 



Amk your dealer or write 



EASTERN CHEMICAL QOs 



BOSTON, MAS6. 



NIKOTEETi 



For Spraying 



APHIS PUNK 



For FuiDligAtkic 

 Xak Your Dealer Fo» It. 



HICOTIUE MFG. CO. 



ST. LOUIS 



