FIELD CROPS. 39 



greatest depth seemed to give larger yields when broadcasted, but had uo 

 influence when applied in the row. 



Dividing the entire fertilizer application seemed to have uo effect on the 

 corn crop. On clay soils cotton yielded less when the application was divided, 

 one-half applied at planting time and one-half July 1, but on flue sandy soil 

 the reverse was noted. 



"At the experiment station [clay soil] and Iredell farms [sandy clay soil] 

 with cotton the best results were secured by using dried blood or cotton-seed 

 meal and applying it all at planting in the row with the carriers of phosphoric 

 acid and potash. At the Edgecombe farm [fine sandy loam] the highest yield 

 of seed cotton on an average was secured where half of the nitrogen as dried 

 blood was supplied in the row at planting with the phosphoric acid and potash 

 and the remaining half of the uitx'ogen application reserved and made as a 

 side dressing in the form of nitrate of soda about July 1. With corn at 

 the Edgecombe farm, dividing the blood application and applying half with 

 the other materials in the row at the planting of the corn and adding the 

 other half as a side dressing about July 1 produced better results than applying 

 all the blood at planting, or half of the nitrogen as blood at planting and the 

 other half as nitrate of soda as a side application, or all nitrogen in the form of 

 nitrate, half at planting with phosphoric acid and potash and the other half as a 

 side application about the first of July. At the experiment station farm with 

 corn, the best results were secured where half of the nitrogen as blood was 

 applied with the potassic and phosphatic materials at planting and the other 

 half of the nitrogen as nitrate of soda was used about July 1, and where all 

 the nitrogen was supplied by nitrate of soda, half being applied at planting 

 with other materials and half later as a side dressing alongside of the rows. 

 At the Iredell farm dividing the blood application, or substituting nitrate in 

 part or in whole for the blood and dividing the application of the nitrate of 

 soda, did not produce as large yield as was secured where all the nitrogen as 

 blood was applied with the phosphoric acid and potash at planting, or where 

 the whole application — blood being the carrier of nitrogen — was divided, half 

 being applied at planting in the row and the other half being put on as a side- 

 dressing about the first of July," 



The advisability of applying the entire fertilizer application at planting 

 time on close texture soils is noted, while it may be divided, especially the 

 nitrogen, on open soils and the first application made in an organic form and 

 the second in a mineral form. 



Effects of different fertilizing materials upon the maturity of cotton, 

 C. B. Williams (North Carolina Sta. Circ. 12 (1914), pp. 4). — The effect of 

 different carriers of phosphoric acid on the maturity of the cotton crop is noted 

 as follows: With acid phosphate added to an application consisting of manure 

 salt and dried blood, there was almost 13 per cent increase in seed cotton open 

 of total crop at the first picking and more than 7 per cent increase at the end 

 of the second picking. This application also gave 22 per cent more open at 

 the first picking and 12 per cent at the end of the second picking than was se- 

 cured from the no-fertilizer plat. Basic slag was found to hasten maturity 

 even more than acid phosphate, as practically one-half of the cotton was open 

 at the first picking on the plat which received this material in connection with 

 manure salt and dried blood. This w^as about 12.5 per cent more than with 

 acid phosphate. When this latter material was applied in the drill in connec- 

 tion with a ton of stable manure per acre, the effects upon hastening maturity 

 were markedly reduced. Where high-grade finely ground phosphate rock was 

 used at the rate of 274 lbs. per acre in connection with a ton of stable manure, 

 48456°— No. 1—14 4 



