no THE CONNECTICUT POMOLOGICAL SOCIETY. 



Low-grade Sulphate of Potash 350-400 lbs. 

 (K 90-105). 



This is for lighter orchard soils which contain but little 

 nitrogen and have little capacity for holding it. 1500-2000 

 pounds of lime when the trees are set and 600-800 pounds 

 once in 5 or 6 years. Under sod-culture, clover will gradu- 

 ally come in, while legumes will thrive and supply nitrogen 

 if tillage is practiced. 



Basic Slag Meal 800-100 lbs. (P2O5 144-180). 



No. 2. 



Low-Grade Sulphate of Potash 350-400 lbs. 

 (K90-105). 



This for medium or heavy soils. It supplies no nitro- 

 gen, but creates soil conditions favorable for clover on sod 

 or nitrogen-g"atliering crops in tilled orchards. 100-125 

 pounds of nitrate of soda may be added if the orchard 

 growth is not satisfactory. 



If manure is used in the orchard, which Brooks believes 

 should not exceed 1^ cords per acre, it may be supplement- 

 ed with Basic Slag Meal 600-800 lbs. (P2O5 108-144). 



Low-Grade Sulphate of Potash 300-350 lbs. (K78- 

 90). 



To peach trees the New Jersey Station in the report 

 above cited applied 150 pounds of nitrate of soda, 350 pounds 

 of super-phosphate and 150 pounds of muriate of potash ev- 

 ery year and found it increased the yield largely over unfer- 

 tilized plots or over those which had one or two of the three 

 ingredients and was commercially profitable. (N23. P2O5 

 50, K2O 75). 



So far I have spoken only of the plant food which we 

 may supply in commercial chemicals or fertilizers. But these 

 things are only a part, a small part, and not pre-eminently the 

 important part of what apple or peach orchards take yearly 

 from the land and for which we have to take thought. If I 

 figure correctly ^^, in fruit, leaves and new wood an acre of 

 peach trees seven to nine years old yearly make about 5,400 



" New York State Station Bulletin 265. 



