10 LIMITATION OF SATSUMA OKANGE. 



In order to make it possible for orange growers to be sure that 

 they are getting plants grafted on Trifoliate-orange stock, the De- 

 partment of Agriculture will undertake temporarily to determine, 

 free of charge, whether or not nursery stock of citrus fruits is grafted 

 on Trifoliate-orange stock. It is hoped that this method will be 

 adopted by state horticultural inspectors and by state experiment 

 stations, as well as by growers themselves. It is the purpose of this 

 temporary offer of the Department to make known the possibility 

 of distinguishing readily whether or not the stock used is the Tri- 

 foliate orange. 



SUMMARY. 



It is not the purpose of this circular to discuss the merits or demerits 

 of the Satsuma orange or to attempt to define the regions in which 

 it can be grown with reasonable hope of success. 



The Satsuma orange is almost a complete failure on sour-orange 

 stock on any soil and in any climate, and succeeds well only when 

 budded on Trifoliate-orange stock. It can be grown, but less suc- 

 cessfully, on sweet-orange, grapefruit, and perhaps rough-lemon 

 stocks. 



The Satsuma orange, being limited to the Trifoliate-orange stock, 

 can be grown with reasonable hope of success only on soils to which 

 this stock is well adapted, namely, fairly rich, fairlj^ heavy soils, 

 preferably with a clay subsoil. 



Purchasers of Satsuma orange trees should insist that they be 

 grafted on T]-i foliate-orange stock, and to protect purchasers against 

 substitution of trees grafted on sour-orange stock the Department 

 of Agriculture will undertake for the present to determine whether 

 or not the stock is Trifoliate orange. 



Do not huy Satsmna oranges budded on sour-orange stock! If you 

 suspect substitution, send a sample to the Department of Agriculture 

 for determination. 



Approved : 



James Wilson, 



Secretary of Agriculture. 



Washington, D. C, December 6, 1909. 



[Cir. 46] 



o 



