June 9, 1917 



HORT ICULTURE 



735 



THE V^RY NEWEST AND QUICKEST METHOD OF DESTROVING WEEDS 



(.RASS AND OTHER GROWTH IN GARDEN WALKS, GUTTERS 



TENNIS COURTS. DRIVEWAYS. ETC. 



Tn,i^,'l"''J^ ".''^"'"'.f y destroys all we.Mls and other growth wherever applied, 



?hl I^. f "" ."'f ¥°'i'"} P'-"<">t« ""= growth of fresh ones for a year tn^ 



of the weeds if required. '"' '""' ""^ ""'""■• "' "" <^"""'«- ""^'"^ " """""K ""«" 



We manufacture the strongest line of DISINFECTANTS on the market. 



CORRESPONDENCE SOLICITED 



WEED KILLER P.-L. chemical go., 507-509 W. 19th St, New York 



flNOLYPTol 



Diseases Noted — New. 



A new, and what appears to be one 

 of the most important diseases of the 

 rose, has been observed by the writer 

 in visits to rose houses. ' We are call- 

 ing it the "crown canker." Specimens 

 have been sent to the Department by 

 growers from many parts of eastern 

 United States and from as far west as 

 Missouri. It was first observed by the 

 writer in September, 1916, but talks 

 with growers indicate that the dis- 

 ease has been present for possibly four 

 or five years. All varieties seem to be 

 susceptible to the disease. The plant 

 is attacked just below the surface of 

 the soil and although the disease ad- 

 vances slowly, the death of the plant 

 is sure with an ever-decreasing num- 

 ber and quality of flowers. 



This disease, which has never been 

 described, is considered of such import- 

 ance that a large part of the writer's 

 time is being devoted to a study of the 



CONCENTRATED PULVERIIED 



MANURE 



Pulverized or Shredded 



Cattle Manure 



Pulverized 



Sheep Manure 



The Florists' standard of imiform 

 high quality for over ten years. 

 Specify : WIZARD BRAJ>ID in 



your Supply House order, or write 

 us direct for prices and freight rales. 



THE PULVERIZED MANURE CO. 

 M Union Stoak Yard, Ohlmc* 



^ 



IMP. 

 SOAP SPRAY 



Quarts, 55c. Gallons, $1.65 



Fives, $6.50 



Try with 24 parts water. Often effeotlve 

 weaker. 



Ask your dealer or write 



EASTERN CHEMICAL CO. 



BOSTON, MASS. 



life history of the causal fungus and 

 the development of a method of con- 

 trol. Several large growers have 

 stated that unless help is obtained 

 they will be forced out of business. 

 With the disease already known to be 

 present in the houses of ten large 

 growers, it is safe to assume that 

 other growers have plants similarly 

 affected and that the disease will be 

 widely distributed and increase rapidly 

 in importance. Steps must be taken 

 immediately to control this disease. 

 Not only is it important that growers 

 who already have the disease shall be 

 furnished with control methods, but 

 is even of greater importance that the 

 method of dissemination of the fun- 

 gus be worked out in order that the 

 further spread of the disease be 

 checked. 



What appear to be other new dis- 

 eases than the one mentioned above 

 have been brought to the writer's at- 

 tention, but too little progress has yet 

 been made in this investigation to give 

 definite statements at this time. 



Investigations Under Way. 



A. Black spot. It is planned to 

 conduct extensive experiments for the 

 control of this disease during the com- 

 ing season. Plants at the Cornell 

 Test Garden and at Chase Brothers' 

 Nursery, Honeoye Falls, New York, 

 will be treated with various fungicides 

 along the lines of recent develop- 

 ments in plant disease control. One 

 of the most important fungicides to 

 be tried is that of finely ground sul- 

 phur applied in the form of dust. 

 Suitable plants have been obtained 

 and are now growing in the green- 

 house at Cornell for similar experi- 

 ments for the control of black spot 

 under glass. 



B. Mildew. Experiments for the 

 control of mildew through the use of 

 finely ground sulphur used as a dust 

 on both indoor and outdoor roses. 



C. Phyllosticta leaf-spot. A study 

 of the life history of the causal organ- 

 ism is now being made. This is one 

 of the most important leaf-spot dis- 

 eases of Ramblers, and methods of 

 control will be tried during the com- 

 ing season. 



D. Crown gall. Some 200 healthy 

 plants have been obtained to be inocu- 

 lated with bacteria causing this dis- 

 ease. These plants will be grown to 

 determine the effect of the disease 

 upon the plant, there being a diverg- 

 ence of opinion as to just how much 

 damage is done. 



E. The ncxv root or crown disease, 

 crown canker. Extensive experiments 

 for the control of this disease are now 

 under way. It is probable that the 

 fungus lives in the soil and that suc- 

 cessful treatments will be along the 

 line of soil sterilization and the prac- 

 tice of sanitation in the houses. How- 



The Becornized Standard Inieotteide. 



A spray remedy for green, black, white flj, 

 thrlpa and soft scale. 



Qnart, t\.W>; Gallon, f2.S0. 



FUNCINE 



For mildew, rust and other bllghtt aSect- 

 Itp flrireri, frolta and TegetabUs. 

 Quart, fl.OO; OaUon. UJO. 



VERMINE 



For eel worms, angle worms and other 

 worms working In the soil. 



Qnart, «1.00; OaUon, M.OO. 



SOLD BY DEAI-ER8. 



Aphine ManufacturiDg 



MADISON. N. J. 



Co. 



sj^mi^^ 



;ectici 



PO<«CH 



Save your plants and trees. J»»t the 

 thing for greenhouse and outdo^jr use. 

 Destroys Mealy Bug, Brown and White 

 Scale, Thrips, Red Spider. Black and 

 Green Fly, Mites, Ants, etc., without 

 Injury to plants and without odor. 

 Used according to direction, our stand- 

 ard Insecticide will prevent ravages on 

 your crops by Insects. 



Non-poisonous and harmless to user 

 and plant. Leading Seedsmen and 

 Florists have used it with wonderful 

 results. 



Destroys Lice In Poultry Houses, 

 Fleas on Dogs and ail Domestic Pets. 

 Excellent as a wash for dogs and other 

 animals. Relieves mange. Dilute with 

 water 30 to 50 parts. 

 y.. Pint, S5e.; Pint, 40c.: Quart, ^Sc.; 

 y, GaUoD, $1.26; Gallon. J2; 5 Gal- 

 lon Can, $9: 10 Gallon Can, $17.S0. 

 Directions on paokaee. 



LEMON OIL COMPANY 



Dept. S. 420 W. Lexington St, Biitimore, Ml 



NIKOTEEN 



For Sprajing 



APHIS PLJNK 



For Fumigating 

 Ask Your Dealer For IL 



NICOTINE MFG. CO. 



ST. LOUIS 



When writing to adoertisert hindty 

 mention HORTICULTURE. 



