Page i8 



BETTER FRUIT 



January 



Mfli 



New Myers Automatic 



ELIMINATES PRESSURE TROUBLE 



You must spray to have perfect fruit. You must 

 spray to save your trees. To wage war success- 

 fully on fruit tree pests modern fighting equipment 

 is required. Myers Spray Pumps are the 42-centimeter 

 guns that produce havoc in the ranks of the insect hosts. 

 Last summer's continued rains where especially favorable 



for the development of fungus diseases, making it doubly imperative for 

 for you to spray, if the healthy condition of the 

 trees is to be preserved. 



Myers Power Spray Outfits are made in various sizes, 

 with pumps for belt, gear or pitman drive. All will operate 

 successfully under any conditions and give entire 

 satisfaction. You can bank on that. Myers Buck- 

 et and Barrel Sprayers and Hand Outfits are un- 

 usually well constructed. Built with the Myers 

 Patented Cog Gear Head, they are so easily op- 

 erated that they can be used where other styles ^ 

 could not even be considered. In fact 

 they possess that something in superior 

 quality and construction that can- 

 not be found elsewhere. 



Our Spl5 Catalog will tell you 

 all about modern spraying machin- 

 ery and also how and when to 

 spray. Write for a copy „^ 



today. 



IT WILL SOON 

 jBE TIME 

 TO SPRAY 



*. 





R E.MYERS a BRa 



r ASHLAND,OHIO. 



P_i<^-^r*^?'*'ASHLAND PUMP AND HAY TOOLWORKS i 

 'Vnj'^n /''"^ I 20 PRANCE STREET 



\ r 



J-1 



How Spray Kills 



By Dr. A. L.Melander, Entomologist, Head of Department of Zoology. Washington State College. 



SPRAYS that are used to control in- 

 sect.s do not all work alike. Tho.se 

 containing arsenicals must be 

 calcn by the insect in order to destroy. 

 Others, like oil emulsions, tobacco and 

 sulphur-lime, kill when in contact with 

 the insect's body, by a process of sutTo- 

 cation. Some sprays have a disagree- 

 able taste and prove effective as a re- 

 pellant, rather than as a poison, the 

 insects going hungry rather than to 

 eat the had-tasting spray. It is the 

 repellant action of sprays that is little 

 understood, much neglected, but never- 

 theless most important. Bordeaux 

 spray, sulphur-lime, tobacco, oil emul- 

 sions, soaps and lime, our commonest 

 spray materials, are all repellants to 

 chewing insects. This should he borne 

 in mind when compounding mixtures 

 of several sprays. It is not alone the 

 chemical I'caction that nuist be heeded 

 in combining sprays, nor also the pos- 

 sibility of foliage injury, but the 

 physiological reaction on the insect 

 must be considered as well. A newly- 

 hatched codling worm is a delicate 



little creature. It has a selective appe- 

 tite and does prefer to feed within the 

 pulpy calyx end instead of on the tough 

 skin of tlie apple. If its first meal is 

 distasteful, the young codling worm 

 has been seen to reject it, working the 

 nibblings out of its mouth by a secre- 

 tion of silk. This is jirobably always 

 the case where the apple is heavily 

 coated with arsenate of lead, or wliere 

 lime, bordeaux spray or sulphur-lime 

 have been added to the |H)ison. Thus 

 it is that late siJiayings lack effective- 

 ness, even when the fruit is whitened 

 by the spray. Most of the entering 

 worms mana.ge to swallow some of the 

 poison, however, enough to kill them 

 after a few days, but in the meantime 

 the apple is "slung," the worm pene- 

 trates a short distance and the fruit 

 becomes as valueless as if it were badly 

 wormy. Apples "stung" at the calyx 

 end are rare when plain, weak arsenate 

 of lead alone is used. It is easily con- 

 ceivable that a calyx spray, much 

 stronger than one or two pounds to 

 the fifty gallons, would prove increas- 



ingly less elfeclive, and evitlence seems 

 actually to point this way. Calyx 

 worniiness is customary where the dust 

 spray, a lime spray or a combination 

 with fungicide is used. 



An insect's sense organs are very 

 ditferent from our own. Its tasting is 

 done by little linger-like appendages, 

 which vary in structure with the 

 species. Things distasteful to us are 

 not necesssarily shunned by insects. 

 For instance, ants will eat (juinine but 

 will reject glycerine, and flies will 

 drink formaldehyde until they drop 

 dead. Bordeaux spray is highly dis- 

 tasteful to most grasshopi)ers, leaf- 

 eating beetles and cutworms, but there 

 are some cutworms on which it seems 

 to have no elTect. An insect is not a 

 feeding machine that must scrape off 

 and swallow whatever is on its food. 

 It is a living organism gifted with 

 powers of diso'imination keener than 

 any we possess. We have but to recall 

 how certain insects are restricted to 

 certain ff)od plants, displaying a knowl- 

 edge of plant species more astute than 

 that of a professional botanist. The 

 least we can ask, therefore, of a stom- 

 ach ])oison is that it shall be tasteless 

 and tine grained, so that the insect 



("ontiiuird nn page 28 



Harness is like a 

 leather boot — if you 

 don't keep it oiled, it 

 rots. Moisture that 

 works into the pores 

 of your harness robs 

 tugs, straps and 

 breechings of the 

 strength they need 

 to give you good 

 long service. 



EUREKA 

 HARNESS OIL 



keeps the pores of the 

 leather filled with high- 

 ly waterproof oils — 

 keeps your harness soft, 

 pliable, strong. Have 

 your harness man dip 

 your harness occasion- 

 ally, or apply it your- 

 self by hand. Harness 

 costs mone.y. It doesn't 

 pay to neglect it. 



Standard 



Oil 

 Company 



(CalifotDii) 



WHEN WRITING ADVERTISERS MENTION BETTER FRUIT 



