IN CALIFORNIA 25 



at the added expense of a new lawn. Nearly all 

 fertilizer works make a special fertilizer for this 

 preliminary use, which has the advantage of contain- 

 ing no seeds of weeds or Bermuda grass, which often 

 prove before eradicated more expensive than all 

 other work connected with the making of new lawns. 



Superphosphate. 



Lime. f^^^.S&IR^* 11 **^,- Thomas slag 



Ammonium sulphate. ^^MT^. X X X XH*^3W. Barnyard manure 



and guano. 



Lime nitrogen (qal- 

 cium cyanamtd). 



Potash salts. 



Nitrateof W da. ^J^=- -^CT Bone mea , 



INCOMPATIBLES IN FERTILIZER MIXTURES 



The danger of indiscriminate mixing of fertilizers is shown in the 

 accompanying diagram taken from Farmers' Bulletin 388. Some 

 materials may be mixed with beneficial results, others not. The dia- 

 gram indicates what fertilizer materials may not be safely mixed. The 

 dark lines unite materials which should never be mixed, the double 

 lines those which should be applied immediately after mixing, and the 

 single lines those which may be mixed at any time. 



Because of such seeds being present, all stable ma- 

 nures should be thoroughly rotted. Never use fresh 

 or unseasoned manure in lawn work if avoidable 

 either before or after sowing or for fertilizing old 

 lawns. 



After fertilizing and spading let the soil rest until 

 dry enough to work, then tread carefully over every 



