icides containing zinc and manganese may supply sufficient quantities 

 of these elements to correct the deficiency. However, in severe defi- 

 ciencies separate sprays containing zinc or manganese must be applied. 



In young, non-bearing orchards, it may be possible to produce suffi- 

 cient high quality mulching material for the young trees by broadcasting 

 500 to 800 pounds of mixed fertilizer per acre. Place the mulch in a 

 band under the spread of the branches. The amount of fertilizer required 

 for the trees with this system of culture will vary with the quantity and 

 quality of mulch applied around each tree. If the trees are not making 

 sufficient growth, one -eighth pound of ammonium nitrate per year of tree 

 age may be applied to the mulch. 



Recommendations for fertilizing peach orchards are given in the fol- 

 lowing table. The amounts given may need to be increased, if the trees 

 are in a heavy sod. A suggested increase would be to double the amount 

 of nitrogen. 



Normal Rates of Fertilizer for Bearing Peach Orchards 



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FOLIAR CALCIUM SPRAYS FOR BITTER PIT CONTROL 



Mack Drake and W.D. Weeks 

 Department of Plant and Soil Sciences 



Foliar calcium sprays are recommended for bitter pit susceptible 

 varieties, such as Baldwin, Northern Spy, and possibly Cortland and Red 

 Delicious, especially on trees with a light crop or those that have pro- 

 duced pitted fruit in recent year. 



We recommend using calcium nitrate (fertilizer or technical grade) 

 at the rate of 5 pounds/100 gallons of water. A spreader or wetting 

 agent such as Triton B should be used at the rate of 3 fluid ounces/100 

 gallons of water. 



Apply 3 sprays at 2-week intervals. The first spray is applied 

 about 2 weeks after petal fall. Preliminary tests indicate that 3 sprays 

 are as effective as 6 or 9 sprays applied throughout the growing season. 



