May 27, 1916 



HORTICULTUBB 



745 



THE VERY NEWEST AND QUICKEST METHOD OF DESTROYING WEEDS, 



GRASS AND OTHER GROWTH IN GARDEN WALKS. GUTTERS 



TENNIS COURTS, DRIVEWAYS, ETC. 



TUis fluid absolutely destroys all weeds and other growth wherever applied 

 and its eBfect on the ground prevents the growth of fresh ones for a year and 

 thus saves a great deal of time and labor, as no cutting, hoeing or hauling away 

 of the weeds is required. 

 We manufacture the strongest line of DISINFECTANTS on the market 



piNfl-LYPTol 



WFFII Kll I FR ^•-'" ^"^l^'^AI- ^0' ^0^-509 ^- 19tti St., New York 



WW M Ml U Im I ■■ k M II CORRESPONDENCE SOLICITED. 



procedure but you will find the paste 

 is so thinly spread out that once it 

 dries you cannot see it. 



Mr. W. B. Parker o£ the Federal Bu- 

 reau of Entomology invented the flour 

 paste method of fighting red spider 

 while working on the hop problem 

 on the Pacific Coast. It is made as 

 follows and these directions are for 

 use in the open but you can modify 

 them and figure down the amounts 

 for use in greenhouse practice. 



"Use a cheap grade of flour; take 

 eight pounds. Make the flour into a 

 thin batter by adding a little cold 

 water at a time until eiglit gallons of 

 water are used. Mash out all lumps. 

 Cook until a paste is formed, stirring 

 constantly to prevent caking or burn- 

 ing. Cooking slowly until the paste 

 just hegins to boil will usually be 

 about right. If the paste is not suffic- 

 ently cooked the resulting spray will 

 not be effective, and if overcooked the 

 paste will harden when thoroughly 

 cool and will not mix with water very 

 readily. Add cold water to the paste 

 when done to make 100 gallons of ma- 

 terial in the spray tank. Keep it con- 

 stantly stirred while spraying. Apply 

 thoroughly to both the upper and 

 under surface of leaves. Use a nozzle 

 making a coarse spray, and not under 

 150 pounds pressure, as the driving 

 force is necessary to penetrate the 

 ■webs and reach the spiders. A flne 

 moist spray will not be effective. This 

 is a contact insecticide and the liquid 

 must actually touch the spider. The 

 materials are cheap: apply liberally. 

 Watch the plants carefully, and if 

 newly hatched spiders are appearing 

 repeat the spraying in about seven 

 days. No spray will kill the eggs 

 without injuring the vines." 



I have used this spray against red 

 spider on plum trees in the Pittsburgh 

 district and it worked, and 1 see no 

 reason for its not working in the 

 greenhouse. It is cheap and effective 

 and will not in any way damage the 

 foliage or flowers. We used Red Dog 

 flour when making our paste. This is 

 a cheap brand of flour that is a favor- 

 ite food for hogs, and my recollection 

 is that it cost us in actual cash outlay 

 for material about seven cents a bar- 

 rel (50 gallons) ready to apply to the 

 trees. 



We bought some potassium sulphide 

 to try at this time, as this material 

 had been very successful in the cotton 

 experiments in the south, but the flour 



NIKOTEEN 



For Spraying 



APHIS PUNK 



For Fumigating 

 Ask Your Dealer For It. 



NICOTINE MFG. CO. 



ST. LOUIS 



paste was so effective that our experi- 

 menting stopped. 



My one other safe bet would be sul- 

 phur, blowing on the dry sulphur; or 

 I would use atomic sulphur. This 

 latter is a paste of very finely divided 

 sulphur manufactured and sold by the 

 Thomson Chemical Co. at Baltimore. 

 I have not used it because at Harris- 

 burg we have no facilities for experi- 

 menting. This material is now used 

 in large quantities as a fungicide on 

 peach trees for the scab and brown 

 rot. In California Prof. W. M. Scott 

 tells me that it is used against the red 

 spider on citrus trees and a great vari- 

 ety of plants with success. Use. when 

 you commence to experiment with this 

 form of sulphur about one-half to 

 three-fourths of a pound in ten gallons 

 of water and a little soap, say one- 

 fourth of a pound. Dissolve the soap 

 before putting it in the solution. Soap 

 acts both as a spreader and sticker. 



I have spoken of lime-sulphur wash. 

 I do not recommend it because it is 

 violent stuff and there is danger of 

 burning the foliage until more experi- 

 mental work is done. Prof. R D. 

 Whitmarsh in a recent bulletin from 

 the Oliio Exp. Station makes the 

 following recommendation with re- 

 gard to its use on violets: In 25 gal- 

 lons of water mix one-half pint of 

 Neco-fume and two quarts of concen- 

 trated lime-sulphur wash. I have no 

 doubt that it will work like a charm 

 but at that strength of lime-sulphur 

 I am sure some kinds of stock grown 

 under glass would rebel, for it is 

 strong enough to burn peach foliage in 

 the open. 



PUBLICATION RECEIVED. 



A Street Tree System for New York 

 City. Bulletin of the New York State 

 College of Forestry at Syracuse Uni- 

 versity. This publication is in th*' 

 form of a report under date of Febru- 

 ary, 1916, by Prof. Laurie Davidson 

 Cox to Park Commissioner Cabot 

 Ward, Boroughs of Manhattan and 

 Richmond. The contents comprise 

 The Street Tree Problem in Manhat- 

 tan, What Streets to Plant, Design in 

 Street Tree Planting, Spacing and 

 Arrangement, A Description of thc 

 Species Best Adapted for Manhattan 

 Streets, Growing Conditions and Plant- 

 ing Methods, The Lost of Planting, 

 with Standardized Planting Specifica- 

 tions, Organization and Budget, Tne 

 Street Tree Census, and Street Tree 

 Planting in Richmond. The pages are 

 embellished with engravings and dia- 

 grams and several elaborate maps are 

 i)ound in. There is an introduction by 

 Hugh P. Baker. The volume is a val- 

 ualile one, full of well considered sug- 

 gestion and sound advice which any- 

 one interested in this important sub- 

 ject of municipal adornment will find 

 useful and instructive. 



The Recognized Standard Inaectlclde. 



A spray remedy for green, black, white 

 fly, thrlps and soft scale. 



Qaart, $1.00; Gallon, $4.80. 



NiKOTIANA 



A 12% nicotine solntlon properly dllat*4 

 for fumigating or yapoiixlng. 



Quart, yi.M; OaUon, HM. 

 Until further notice shipments on our 

 products FCNGINE, TEBMINB and SCA- 

 LING will be subject to condltloni of Ui* 

 chemical market. 



Prompt Bblpments can be guaranteed on 

 AFHINB and NIKOTIAMA. 



Aphine ManufachinDg Co. 



MADI90N. N. J. 



ih^NURES 



Unequalled for Greenhotise and 

 Landscape Fertilizing 



THE PULVERIZED MANURE CO. 



31 Union Stock Yards, Chicago 



^ 



IMP. 

 SOAP SPRAY 



Is a sclentlllcaliy prepared compound 

 that in highly efficient for ALI, Insect 

 pe»tB. Why bother with several sprays 

 when this will answer CTery purpose 

 throagbout the year? 



LOOK FOR THE IVY LEAF TKADB 

 MARK. 



Ask your dealer or write 



EASTERN CHEMICH CO.. BOSTON 



When antwering advertUementt, pleage 

 mention the BREEDER. 



