SPECIAL REPORT FOR YEAR I912. I3- 



strengths, with arsenate of lead as the insecticide. Tests of arsenate 

 of lead as a fungicide are also included. One plot of trees is treated 

 with bordeaux mixture for comparison. No trees have this year been 

 left unsprayed for insects, as the desirability of spraying has been fully 

 established. 



There are 25 rows in the experiment. The first six trees in each row 

 are treated as follows : 



Rows I to 3, inclusive, arsenate of lead at the rate of 4 pounds to 50 

 gallons of water. 



Rows 4 to 9, inclusive, home made concentrated lime-sulphur solution, 

 used one-fifth stronger than the strength recommended by the latest 

 dilution tables, with 2 pounds arsenate of lead to 50 gallons of water. 



Rows ID to 15, inclusive, the same lime-sulphur solution used at the 

 dilution recommended, according to its density, plus 2 pounds arsenate 

 of lead to 50 gallons of water. 



Rows 16 to 21, inclusive, the same lime-sulphur solution used at a 

 dilution of one-fourth weaker than the strength recommended by the 

 latest dilution tables, plus 2 pounds arsenate of lead to 50 gallons of 

 water. 



Rows 22 and 'Z^,, arsenate of lead, at the rate of 2 pounds to 50 

 gallons of water. 



Rows 24 and 25, bordeaux mixture of the 3-3-50 formula, plus 2 

 pounds aresnate of lead to 50 gallons of water. 



Orchard Management Experiments. 



In 1910 and 191 1 two plots were pastured with hogs and sheep in a 

 comparison with the cultivated plots. The results showed so decisively 

 that cultivation is essential on the soil of Highmoor Farm for growing 

 the apple that they are discontinued. 



12. Rows 19 to 25, inclusive, beginning with the seventh tree in each 

 row, have been left in grass, to compare with the cultivated and pas- 

 tured plots. 



13 A. Rows 26 to 30, inclusive, throughout their entire length, have 

 been dressed with barnyard manure at the rate of 6 cords per acre, 

 to compare this means of fertilizing with the three preceding plots and 

 with 13 B. 



13 B. Rows 31 to 35, inclusive, have been treated with the complete 

 4-8-7 chemical fertilizer at the rate of 1000 pounds per acre. 



All of the plots included have been pruned and sprayed; all excepting 

 12 are cultivated, and all excepting 13 A have been fertilized with 4-8-7 

 chemical fertilizer at the rate of looo pounds per acre. 



These orchard management experiments are to be continued in order 

 to obtain data covering long periods of time. 



