250 GARDENING FOR PROFIT. 



edy, if remedy it is, for rust, smut or other mildew para- 

 sites, must, in my opinion, be a preventive one'; that is, 

 whenever practicable, use new land, or renew the old 

 land, by a green crop, such as Rye, Timothy or Millet, 

 in all sections subject to these diseases. The same plan 

 had better be adopted in all places where the Onion 

 maggot or other insects attack the crop. The theory for 

 this practice is, that it is believed that nearly all plants 

 affected by insects or diseases, have such peculiar to them- 

 selves, and that the germs or eggs lie in the soil ready to 

 fasten on the same crop, if planted without intermission 

 on the same ground, while if a season intervene, the 

 larva or germ has nothing congenial to feed on, and is, 

 in consequence, destro} T ed. In practice we usually find 

 that cultivated land " rested " for a season by a grass crop 

 gives a cleaner and healthier crop of whatever vegeta- 

 ble may follow it. 



THE PRODUCT. 



The product of the average Onion crop varies very 

 much, ranging from 300 to 900 bushels per acre, the 

 mean being about 600 bushels per acre. The price, like 

 that of all perishable commodities, is variable, ranging 

 from 50 cents per bushel, the price at which they usually 

 wholesale in the New York market in fall, to $1 or $1.50 

 per bushel for winter and spring prices. The estimate, 

 then, of profit per acre may be given about as follows : 



Manure, per acre... $ 72 



Plowing, weeding and harvesting crop, per acre- - 100 



Six pounds seed, average $2 per pound 12 



Rent or interest, on land, per acre 9 



Marketing crop, per acre 7 



Cost ...$200 



Six hundred bushels per acre, at 50 cents 300 



Profit... .-.$100 



