26 THE REPORT OF THE No. 36 



Dusted Plots. Plots II (Table III), IV (Table V), and VI (Table VII), 

 were dusted, with the exception of the first semi-dormant liquid spray on all 

 except the VI's plot. 



Taking up Table III we see that we used sulphur, talc and arsenate of lead 

 in this plot, while in Table VII we see that in the last plot we substituted Ilydrated 

 Lime to the talc and arsenate of lime to the arsenate of lead and with every sort 

 of satisfaction, thus making the last formula the most economical of all the dusted 

 plots, as arsenate of lead is dearer than arsenate of lime. 



Another interesting point was the use, for the first time in our orchards, of 

 anhydrous Bordeaux mixture or dust Bordeaux. The arsenate of lime was used 

 with perfect safety with this bordeaux dust. Having found the commercial copper 

 dust too strong we reduced it by adding more hydrated lime, thus using the 

 following formula, (Table V) : 



Dry Bordeaux as bought mixed already 4614 lbs. 



Hydrated Lime added to above 461/4 ^^s. 



Arsenate of Lime 7^^ lbs. 



Looking over the table of comparative costs, we can see that this new dusting 

 material costs a little over 34^ cents per tree for the four applications, as again yt 

 33% cents for Sulphur-Talc-Arsenate of Lead Dusting and 17 y^ cents for ihe 

 Sulphur-Hydrated Lime-Arsenate of Lime Dusting material 



As to results on the crop, the copper dust seems to have good fungicidal value, 

 perhaps a little better than the sulphur dusts, without any russeting to the fruit. 



Sprayed Plots. I come now to the first object in view: to determine if 

 Bordeaux mixture, as employed here in our orchards, is a superior spray than the 

 Lime-Sulphur wash we have used since the past 10 years. In a word what the 

 advocates of Bordeaux maintain is that Lime- Sulphur wash, far from being a bene- 

 ficial spray, sprays the apples of the tree. This has not proven true at all in our 

 orchards. In fact after we were sure that the apples in the plot sprayed with 

 sulphur were sticking just as heavily on each tree, we had to thin each tree in 

 plot III as in any other of the sprayed or dusted plots. 



A good many visitors came to see the orchard this summer, and I may mention 

 especially Mr. Petch, Mr. Davis and Mr. Bunting of Macdonald College. These 

 gentlemen went over the orchard very carefully, and were convinced of the fact 

 that Lime-Sulphur is surely a safe spray for our Province at least. 



No russeting to speak of was noticed on either of the two Bordeaux mixture 

 plots, plot I and plot V, though more Copper Sulphate was used on plot I than 

 on plot V, the old formula of 4-4-40 being maintained on plot I and the new 

 one of 2-10-40 on the other. 



Results. Time is lacking to give too many details, but as I have mentioned 

 before, we did not tabulate results, plot per plot, but after looking over the whole 

 orchard, we have found that any of the formulas employed gave satisfactory results, 

 both as to quantity and quality of the fruit. The 6 plots gave 1,500 boxes of fine 

 apples, after they had been all thinned. 



In looking over the last table of costs, dusting is certainly a more expensive 

 way of treating an orchard than spraying; but I am going to stick to both, as 

 both have their utility, dusting is a much quicker way to get around the trees 

 in bad weather, and some times no results can be obtained if the applications are 

 not made on time and thoroughly. 



