Spkating Apple Orchards in a Wet Season. 367 



five to thirty-eiglit per cent of tliein were wormy. Fig-. 2 is a 

 pliotograph of an avei'age lot of untreated King ap}»les. These 

 untreated apples are smaller than the treated oneK, altliougk this 

 fact may not be noticed at first glance in tlie much reduced illus 

 trations. But the gain in size and uniformity in Pigi^i. 3 and 1 is 

 considerable. 



The combination of Bordeaux mixture and Paris green reduced 

 the pel' cent of scab in both Kings and Baldwins to a ti-ifle more 

 than fifty per cent. 



The combination containing the London pini)le Avas not so 

 effective, for fifty-nine per cent of the Kiu.gs and sixty-seven per 

 cent of the Baldwins were badly injured. Fig. 3 i< a fair represen- 

 tation of apples treated with this combinaition. 



■ The action of the Paris green is particularh' iiiteresting. When 

 used alone it reduced the 'injiu'y from scab upon the King aipples 

 17.7 pel' cent, upon the BaldAviiis iseven per cent. Tliis mieipial 

 gain may probably be explained to a certain extent hy the fact 

 that the Baldwins were not so severely attacked. Wlien used 

 with the Bordeaux mixture upon the King's a gain of four perct^nt 

 stands in favor of the I'aiis gi"een when cmnpa-red with the Lon- 

 don i)urple, A\'hile in the case of the Baldwins the gain is fifteen i)er 

 cent. This would go to show that Paris green possesses marked 

 fungicidal properties, but it is not so valuable in this respect as 

 the Bordeaux mixture. (Fig. 4.) 



P.y comparing Figs. 2, 3 and 4, it will be seen that the sprayed 

 apples are decidedly larger than those not treated. This may pos- 

 si]>ly be but the natural variation in the size of the finiit boine by 

 diiferent trees, but since the unsprayed ti-ees bear unifoi'inly 

 smaller frnit it is scarcely probable that the applications wcnv not 

 in some way connected with the increase in size. And this agrees 

 with results obtained in Ohio duiing 1891 by W. J. (xreen.* lie 

 found that " Aside from inferior appearance of scabby fruit, the 

 effect of the scab is to retard the growth of both foliage and frnit; 

 hence, scabby apples are smaller than those free from scab. The 

 diiJerence in size between apples that are affected with scab, and 



. *See Bull. Ohio Ex. Sta., Dec, 1891. 



