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CHEMICAL GRASS CONTROL IN THE ORCHARD 



The elimination of grass and weeds under young fruit trees may aid materi- 

 ally in tree growth and mouse control. 



With chemical weed control it is necessary to - read the label - follow 

 instructions - apply only on crops specified - not apply more than the suggested 

 amount - make applications only during suggested seasons and calibrate your 

 sprayer to insure proper rate of application. 



The following table on number of tree areas to cover with 100 gallons or 

 with one gallon of spray solution was taken from an article by Dr. Elwood Fisher, 

 Cornell University, titled "Extension Suggestions for Trial Use of Herbicides on 

 Young Non-Bearing Fruit Trees" that appeared in the 1960 Proceedings of the New 

 York State Horticultural Society. 



Number of trees to cover with 100 gallons or with 1 gallon of spray solution 

 when applying at the rate of 100 gallons per acre and spraying the stated number 

 of feet from the tree trunk on all four sides of the tree (calculated as a 



square) ; 



Distance sprayed Number of trees Approximate 



from the trunk per 100 gallons number of trees 



p er gallon 



3 feet 1210 12 



A feet 681 7 



5 feet 436 4 



6 feet 303 3 



7 feet 222 2 



8 feet 170 1-3/4 



9 feet 134 1-1/3 



10 feet 109 1 



11 feet 90 9/10 



12 feet 75 3/4 



13 feet 64 2/3 



14 feet 56 3/5 



15 feet 48^ 1/2 



Apples a n d Pears 



Dowpon is recommended for the control of grass under apple and pear trees at 

 least four years old . Use Dowpon at the rate of 1 pound to 10 gallons of water. 

 Apply 10 pounds of Dowpon per acre on area treated. The grass should be sprayed 

 when it is 4 to 6 inches high which is usually in May. Re-treat later if 

 necessary. 



On non-bearing trees Simazlne may be added with the Dowpon at the rate of 4 

 to 5 pounds (80% wettable powder) per 100 gallons of water. Simazine has no 

 label for use under bearing tree s. 



Simazine may be used along under non-bearing apple and pear trees following 

 cultivation or any other method of weed and grass removal. Apple Simazine (80% 

 wettable powder) at a rate of 3-3/4 to 5 pounds per acre on the area treated. 



