Food for biit also few marketable roots, and those of very poor 



_ keeping quality. 



168 On this account the ammoniate plant food applied 



should not be of the ordinary kind which becomes 

 slowly available, and continues to supply active Ni- 

 trated ammonia late in the season, thus delaying 

 maturity to such extent that the crop is injured by cold 

 weather. 



The New Jersey Experiment Station made some 

 experiments in Gloucester County, and the following 

 table shows the results: 



Experiments with Fertilizers on Sweet Potatoes. 



Kind of fertilizer and Cost of Bushels per acre, 



quantity per acre. fertilizer. Large. Small. Total. 



1. No manure 157 51 208 



2. 320 Ibs. bone-black, 160 Ibs. 



muriate of potash $7.70 205 36 241 



3. 200 Ibs. Nitrate of Soda, 320 



Ibs. bone-black, 160 Ibs. 



muriate of potash 12.34 270 58 328 



4. 20 tons stable manure 30 . 00 263 61 324 



It will be seen that the addition of Nitrate of Soda 

 to the bone-black and potash gave an increase of 65 

 bushels per acre, and that the Nitrate, bone-black and 

 potash, together costing $12.34, produced a little larger 

 yield than 20 tons of manure, costing $30.00. 



"Another point of considerable importance, since it has 

 reference to the salability of the potatoes, was noticed at the 

 time of digging, viz.: That those grown with chemical manures 

 alone were bright and smooth of skin, while at least one-third of 

 those grown with barn-yard manure were rough and partially 

 covered with scurf." 



Tomatoes. 



Tomatoes are successfully grown on all soils, 

 excepting very light sand or a very heavy clay; with 

 irrigation, they may be grown profitably on light sandy 

 soils. The soil must be plowed deeply, and thoroughly 



