542 



HOETI CULTURE 



October 21, 1916 



INSECTICIDES PURER. 



That the Insecticide and Fungicide 

 Act of 1910 has resulted in marked im- 

 provement in the quality of insecti- 

 cides and fungicides entering inter- 

 state commerce is shown by the an- 

 nual report of the Insecticide and Fun- 

 gicide Board for the fiscal year ended 

 June 30, 191G. Persistent sampling of 

 four of the leading substances used in 

 spraying shows a marked reduction in 

 the number of violations of the act 

 compared to preceding years. In 1915 

 only 8 per cent, of the samples of lead 

 arsenate taken were in violation of 

 the act, whereas in 1911-12 60 per cent, 

 violated the law. Similarly the viola- 

 tions found in lime-sulphur solutions 

 had fallen from 94 per cent, to 14 per 

 cent., and Bordeaux mixture from 9S 

 per cent, to 36 per cent. Only 19 per 

 cent, of the shipments of Paris green 

 examined showed any violation, where- 

 as in 1911-12 28 per cent, of these ship- 

 ments were objectionable. 



While these results are probably due 

 partly to the effect of deterrent prose- 

 cutions, they are due in even greater 

 measure to the assistance the Depart- 

 ment's scientists have accorded to 

 manufacturers in making their prod- 

 ucts of standard strength and to the 

 growing practice on the part of man- 

 ufacturers of adapting themselves to 

 improved methods and tests. 



In this work during the past year, 

 the inspectors collected 1,487 samples 

 of different shipments. Of these, 190 

 were of insecticidal preparations for 

 household use and 221 were of disin- 

 fectants, germicides, and bactericides 

 for the prevention of diseases of hu- 

 man beings as well as of domestic 

 animals. The Department during the 

 past year has given particular atten- 

 tion to the prevention of the sale in 

 interstate commerce of products rec- 

 ommended for household use which 

 are either impotent or the value of 

 which is misrepresented on labels. 

 Many samples of arsenates, Bordeaux 

 mixtures, sulphur and other prepara- 

 tions also were taken. 



In preventing the importation of 

 misbranded or adulterated insecticides, 

 the Insecticide and Fungicide Board 

 collected 35 import samples. In the 

 case of 5 preparations it was recom- 

 mended that entry into this country 

 be entirely forbidden or that the con- 

 signments be released only after being 

 correctly labeled. In 9 other cases it 

 was recommended that future ship- 

 ments be detained. The remaining 

 samples complied with the law. 



The Board devotes considerable at- 

 tention to investigational work for the 

 determination of the value of various 

 commercial insecticides and fungi- 



Hammond's Thrip Juice No. 2 



REGISTERED 



A Contact Insecticide, Useful and Reliable, Used for 30 Years in Green- 

 houses, and on Plants, Grape Vines, Trees and Shrubs 



Some common Sucking Insects, magnilied. 



HANNOND'S PAINT & SLUG SHOT WORKS, Beacon, N. Y. 



cides. It announces that it has under 

 way tests of the merits of commer- 

 cial dust and liquid sprays In the con- 

 trol of insects and diseases. These 

 will include tests of articles composed 

 of finely ground sulphur in combina- 

 tion with arsenate of lead, with a dilu- 

 ent such as finely ground lime or gyp- 

 sum. The Board also is investigating 

 the value of different commercial 

 pyrethrum powders, tobacco powders, 

 nicotine solutions, etc., when used as 

 sprays, dusts or fumigants. Experi- 

 ments have been made to determine 

 the action of potassium cyanide and 

 other substances in the control of in- 

 sects and plant diseases when injected 

 into the tissues of plants. 



TO KILL THE CHRYSANTHEMUM 

 LEAF ROLLER. 



A bit of very useful information for 

 plant growers developed in conversa- 

 tion with F. C. W. Brown of J. M. 

 Gasser Co., Cleveland, Ohio. In dis- 

 cussing the greenhouse pest known as 

 the leaf roller, which is often the cause 

 of serious injury to chrysanthemum 

 plants, he gave the following formula 

 for a spray which he said was the re- 

 sult of much study and had proved 

 most effective: 



"One level teaspoontul of paris 

 green, mixed to a paste with nicotine, 

 and then diluted with two gallons of 

 water to which had been added one- 

 half pound of brown sugar. This does 

 not discolor the foliage and is harm- 

 less to everything except the leaf 

 roller." 



PUBLICATION RECEIVED. 



A very serviceable document for the 

 use of greenhouse workers is Bulletin 

 296, recently issued by the New Jersey 

 Experiment Station at New Bruns- 

 wick, N. J. It treats very fully and 

 practically on the more important of 

 the destructive greenhouse insects, 

 giving pictures showing their various 

 stages, describing their life historv. 

 food plants and the injury caused bv 

 each, with directions for their control. 

 Harry B. Weiss is the author. 



Tha Bccocnlxed Btendu-d iBfeeUetda. 

 A (pnij remedj for sreen, bltck, whIM 

 fl/, tbripi iBd toft Kale. 



Qwut, (1.M; OaUon, M.M. 



NIKOTIANA 



A 11% nleatlnc aolatlan pr*p*rl7 <Ua«a4 

 for famlsatliif or Ttporlilns. 



Qaart, fl.M: OaUm. t*.M. 

 Cntll fvrtber notice sblpmenu on oar 

 ■rodaeU riTVOINK, TSBHnTB aad BOA, 

 UITB will be labjact U era«lUou *t Ifea 

 eh«iBlc*l market. 



Prompt ablpmenta can be raarantecd es 

 APHnnC tat XIKOTIAJTA. 



Aphme Manufactunog Co. 



MADISON. N. J. 



J^ 



IMP. 

 SOAP SPRAY 



la • aeUnttaeallr prepared eempaiua4 

 that la hlchlr efficient for AX.L taaeat 

 peata. Wbj bother with aeTer*! apn^a 

 when thla wLU anawer every parpaae 

 thronshout tke jt*tt 



I.OOK FOB THE IVT LEAT TKADI 

 MABK. 



Aak your dealer or writ* 



EASTERN CHEMICAL CO., BOSTON 



NIKOTEEN 



For Spraxing 



APHIS PUNK 



For FtimipBtii^ 

 Aak Your D.aW For It. 



KICOTSTE MFG. GO. 



ST. LOUS 



