62 



HOBTICULTURE 



January IS, 1919 



CONTROLLING CUCUMBER DIS- 

 EASES BY SEED TREATMENT 



AND CROP ROTATION. 

 Simple and important methods of 

 controlling two cucumber diseases are 

 the use of disease-free seed and ro- 

 tation of crops. The results of recent 

 investigations are published in an ar- 

 ticle on the cucumber angular leaf 

 spot disease in the Journal of Agri- 

 cultural Research and in Department 

 of Agriculture Bulletin 727 on the an- 

 thracnose disease of vine crops. 



These diseases overwinter both in 

 the fields where diseased crops are 

 grown and on the seed saved from 

 such fields. 



Should Treat Seed Now 

 Disease-free seed can be secured by 

 soaking them for five minutes in a 1 to 

 1,000 solution of corrosive sublimate 

 and then washing 15 minutes in run- 

 ning water. The germination is not 

 injured by this treatment. 



Seed treatment can be done most 

 advantageously and with the smallest 

 outlay of time and labor by commer- 

 cial seed dealers, seed growers, pickle 

 companies, or other wholesale seed 

 handlers while the seed are still in 

 large quantities, and before they have 

 been distributed to retailers and 

 growers. 



Seed Treatment Simple. 

 Seed treatment is a comparatively 

 simple operation and can be done in 

 storage houses if running water is at 

 hand. 



Caution. — The highly poisonous na- 

 ture of corrosive sublimate (mercuric 

 chloride) should be kept in mind 

 throughout -the entire process of seed 

 treatment. 



In practice the following procedure 

 has been found advisable. In order to 

 dissolve the mercuric chloride rapidly 

 an equal quantity of ammonium chlo- 

 ride should be used. Purchase 1 pound 

 each of mercuric chloride and ammo- 

 nium chloride for every 500 pounds of 

 seed to be treated. Make up a con- 

 centrated stock solution of a strength 

 of 1 to 20 by dissolving 1 pound of 

 each in 2% gallons of water. This 

 stock solution is diluted to 1 to 1,000 

 by adding 2 quarts to 21% gallons 

 of water. Stir thoroughly before usinja 

 Metal containers can not be used for 

 the mercuric chloride solution. In 

 making up the stock solutions use 

 graniteware measures and wooden 

 pails; for the treatment use barrels. 

 Immersing the Seed. 



Place seed- in loosely woven bags, 

 50 pounds in each. The bags should 

 not be over three-quarters full, to al- 



Four New Giant Stocks 



GREENHOUSE SAVED SEED 



LENOX MAUVE 



LENOX PURPLE 



25c; Y 6 oz. $1.25 



LENOX PINK 



LENOX WHITE 



Each color separate. Tr. pkt, 



The LENOX STOCKS are great improvements on the 

 Beauty of Nice Strain. They bloom in four to five months 

 from sowing and under good cultivation, (disbudded), attain 

 a height of 2J/2 to 3 feet, producing a gigantic flower spike 

 bearing beautiful large double flowers, the actual seed of- 

 fered above has produced as much as 85 % double flowers. 



Strtbur (LBofc&ingtcm (tto.jnc. 



128 Chambers Street Seedsmen NEW YORK CITY 



LILY OF THE VALLEY 



Original Cases containing 1750 Pips, 



M $22.50; Small Quantities, 



$2.50 per hundred 



FOTTLER, FISKE, RAWSON CO. 



The Seed Store 



I .' and 13 Faneuil Hall Sq., Boston 



low for swelling of the seed and to fa- 

 cilitate stirring. Immerse the bag of 

 seed in 25 gallons of the 1 to 1,000 

 bichloride solution and agitate vigor- 

 ously to secure thorough wetting of 

 the seed. Remove the bag promptly 

 at the end of five minutes and im- 

 merse at once in running water in a 

 barrel and stir thoroughly. Wash 

 about 15 minutes. Dry the seed as 

 rapidly as possible. Forced drying by 

 an air blast is much to be desired. 



The bichloride solution may be 

 used only twice, since its strength is 

 reduced by use. Make up a fresli di- 

 lution from the stock solution for 

 every two bags of seed. 



Guard against reinfection of the 

 treated seed. Bags to be used for 

 treated seed should be soaked in the 

 1 to 1,000 bichloride solution for at 

 least five minutes, rinsed, and dried. 

 This can be done most readily by 

 using these bags for the original seed 

 treatment, being careful that the en- 

 tire bag is immersed. 



Rotate Crops. 

 Growers should never plant cucum- 

 bers, cantaloupes, or watermelons on 

 fields where the anthracnose or the 

 angular leaf-spot disease occurred on 



any vine crops the previous year or on 

 immediately adjacent land. Select new 

 fields or land in crops other than vine 

 crops the year before, and thus re- 

 duce the chance of disease losses. 



Horticultural Books 



For Sal* by 



HORTICULTURE PUBLISHING CO. 



Chrysanthemum Manual. Elmer 



D Smith to.io 



Tiio Chrysanthemum. Herrlnf- 



ton M 



Commercial Carnation Culture. 



Dick Un- 

 commercial Rose Culture. 



Holme* LM 



Violet Culture. Galloway LM 



Greenhouse Construction. Tftft.. LM 

 Sweet Peas np to Date. Kerr... LM 

 Plant Propagation, Greenhouse 

 and Nursery Practice. Kains.. LM 



Plant Pruning. Kains LM 



Book of Garden Plans, llamblln. t.M 

 Landscape Design. Hubbard.... •.09 

 The Art of Outdoor Rose Grew* 



ing. Thomas «.00 



The Home Vegetable Garden. 



Krahm LM 



Vegetable Gardening. B. L. 



Watti LM 



Pareeas oa The Boss LM 



Principles of Floriculture. E A. 



White LW 



Foundations ef American Grape 



Culture. Mnnson <M 



Plant Materials of DereratW* 



Hardening. Treleaae LM 



Aristocrats ef the Gardes. Wil- 

 son I.M 



Bailey's Cyclopedia ef Horticul- 

 ture, 6 Tolumes 



