Page Eighteen 



they could not he used extensively in the 

 Mississippi valley. It was necessary, there- 

 fore, to recommend other materials to be 

 universally used by the growers for the 

 1921 crop. 



.Although a 4 to 7 per cent strength of 

 nicotine sulfate dust is ordinarily recom- 

 mended for the control of melon aphis, 

 only the 10 per cent strength was used 

 since the beetles were the main problpm. 

 One of the outstanding advantages of using 

 a nicotine sulfate dust against the cu- 

 cumber beetles is that aphis will be con- 

 trolled incidentally and save purchasing 

 separate strengths, as some years aphis are 

 not a factor. More aphis were i(illed with 

 nicotine sulfate dust than when we used 

 liquid nicotine sulfate soap solution in 

 power outfits, using six-foot extension rods 

 and angle nozzles. 



Arsenate of Lead, Paris Green, Lime 

 Formula — It was also found that a mix- 

 ture of 1 -pound dry arsenate of lead, one- 

 half pound Paris Green mixed with 15 

 pounds of hydrated or air-slaked lime, 

 when dusted upon the plants, gave almost 

 perfect protection against the cucumber 

 beetles when applied every five to seven 

 days from the time the plants appeared 

 until beetle feeding practically ceased. 



Calcium Arsenate and Gypsum — 

 Several commercial growers used the Ohio 

 recommendation: One pound calcium ar- 

 senate mixed with 20 pounds of gypsum. 

 This mixture, when applied regularly, 

 gave fairly good protection from beetle 

 feeding, but severe burning resulted and 

 therefore seemed not as practical as the 

 other dusting mixtures which gave no burn- 

 ing. 



A few growers used "Lazal," a branded 

 product of the General Chemical Com- 

 pany, and our notes show that very satis- 

 factory control was obtained against cu- 

 cumber beetles. No burning resulted when 



BETTER FRUIT 



used at full strength, nor when 5 per 

 was added to "Nico Dust." 



cent 



MELON Anthracnose — In the almost 

 total absence of liquid power sprayers 

 in the Missouri melon territory several 

 commercial growers were advised to apply 

 n copper compound as a dust in a good 

 hand operated bellows-type duster. Two 

 materials were used: Dry Bordeaux ("Or- 

 chard Brand" the equivalent of 21.82 per 

 cent metallic copper) and dehydrated cop- 

 per sulfate (Niagara product). The time 

 of application was the same as commonly 

 rccommened for liquid Bordeaux. 



The copper dusts were applied in several 

 counties and the results were very uniform. 

 There are apparently few or no records 

 where copper compounds have been used as 

 a dust for controling watermelon anthrac- 

 nose nor of the tolerance of this type of 

 plant to various forms .and strengths of 

 copper compounds. 



Accurate records were kept for one field 

 which contained 150 rows of watermelnr 

 plants set 10x10 feet with 32 hills to the 

 row. Eight rows received but two applica- 

 tions of one pound dehydrated copper 

 sulfate to each four pounds of lime, the 

 regular second and fourth applications as 

 recommended in United States Department 

 of Agriculture, Department Circular 90. 

 An average count of the eight rows at two 

 pickings showed a total of twelve melons 

 with an average of one lesion per melon. 

 Nine rows were used as checks against the 

 eight treated rows and a count at two pick- 

 ings showed an average of 24 melons per 

 row too badly diseased to make lesion 

 counts. 



Dry Bordeaux and Lime — Dry com- 

 mercial Bordeaux manufactured for liquid 

 spraying was used in various strengths and 

 with different timing of applications. 

 Two rows received for the first application 

 equal parts of dr}' Bordeaux and hydrated 



May, 1922 



lime, the second application was the same 

 and the third and fourth applications had 

 one pound of dry Bordeaux to each one 

 and one-half pounds hydrated lime. The 

 two commercial pickings showed a count of 

 only 7 melons per row which had any 

 sign of the disease. 



Four rows received Bordeaux and lime 

 in which equal parts were used in the 

 first application and one to one and one- 

 half in the three other applications. By 

 actual count an average of the two pickings 

 gave nine melons per row showing slight 

 lesions. 



Five other rows received this material 

 in the same strengths as the four rows pre- 

 viously mentioned, but the regular second 

 application was omitted. The two pickings 

 showed an average of 21 melons per row 

 badly "blistered." 



Eleven check rows used against the dry 

 Bordeaux gave a count of 20 melons per 

 row badly infected. 



TREE PROTECTORS 



both Perforated and Non- 

 Perforated, both for trees 

 and vines. Why go to 

 the expense of buying 

 your land^ — ^grading it — 

 buying your trees or vines 

 — expense of planting 

 same and then just leave 

 them exposed for rabbits, 

 squirrels, sand storms, 

 sun scald, to destroy and 

 injure a portion of them 

 when we can help you to 

 save every tree. We have 

 sold over 15 million in 

 California in the past few 

 years, let us also help 

 you to get a 100 per cent 

 stand. We make a num- 

 ber of kinds. Tell us 

 your pest and we will 

 tell you what to use. Ask 

 for samples if interested. 

 We also make Propogat- 

 ing pots, for early vege- 

 tables. 



The Expan Company 

 Lock Box 465 



Redlands, California 



Follow the Violet Lines. There is Merit in the Wrapper. 



PROTECTS 



"Care" Protects— "Caro" Prolongs the Life of Fruit— Why? 



CHEMICALLY TREATED WITH BORDEAUX MIXTURE 

 FRUIT MATURITY is retarded by cold or refrigeration and hastened by heat or atmospheric exposure. 

 The soft fibrous silk-like texture of "Caro" provides just sufficient ventilation to retard the ' 'P^"'"S P'^°<==''- _._, . 

 FRUIT DECOMPOSITION starts from a bruise which opens tiny holes and permits juice to escape and l^AC 1 t-KlA to 

 enter. "Caro" clings closely and dries up the escaping juice. "Caro" ingredients harden the spot, destroy bAt, 1 t:J^l/\ 

 and FUNGUS SPORES and arrest decomposition. ,., 

 United SUtes DUtributors, AMERICAN SALES AGENCIES C O., 112 Market Street, San Francisco, Calitomia. 



