24 The Bulletin. 



of the previous treatment of the land, he would recommend about 

 750 pounds of a formula something like the following: 



10 per cent potash, 

 8 per cent phosphoric acid, 

 2 per cent nitrogen. 



The following table will give about the amount of fertilizing ma- 

 terial required to give the above percentages : 



400 pounds of acid phosphate (14 per cent), 

 150 pounds muriate of potash, 

 200 pounds of cotton-seed meal. 



In many instances this formula might possibly not give any better 

 results than some other formulas now used by dewberry growers. 



While phosphoric acid and potash are by far the most important 

 ingredients, it is best to use a small amount of nitrogen, as indicated 

 in the formula. The amount of nitrogen here given is equal to only 

 about one-fourth of the amount of phosphoric acid and one-fifth of 

 the amount of potash. The plant must make some growth at this 

 season of the year, and also requires nitrogen for the development of 

 the fruit. 



Summer Application of Fertilizers.— This application is made im-. 

 immediately after cutting off the plants. The fertilizer is for the 

 purpose of making canes during the remainder of the season which 

 are to produce the following year's crop. The element which is most 

 important in making cane growth is nitrogen ; hence, the fertilizer 

 should consist largely of this element. Some potash and phosphoric 

 acid are necessary, since the fruit buds which produce the next year's 

 crop are formed, in a large measure, during the fall. Cotton-seed 

 meal is most commonly used and is an excellent fertilizer for this 

 purpose. It consists largely of nitrogen, and also contains some 

 potash and phosphoric acid. At present the writer cannot recom- 

 mend anything better than an application of 600 to 700 pounds of 

 cotton-seed meal, or 500 pounds of cotton-seed meal and 100 pounds 

 of nitrate of soda, the latter being for the purpose of starting gi-owth 



quickly. 



TREATMENT THE THIRD SEASON. 



Beginning with the third season, the treatment each season is ex- 

 actly like that recommended for the second season. 



