1028 EXPERIMENT STATION RECORD. 



various cultural conditions conibined have loss influence on quantity 

 and quality of produce than has the weather; and tlie fact that barley 

 does not ^Ya^lt for quality too high a condition of soil points to the 

 wheat crop as the best preparation for barley. 



Some tests relating to the culture of barley, A. Pagxoul (Afin. 

 Ayi'on.. 2i) {l!)UU)^ \<>. lU^'P- ■'>01--'>(J7). Sonic pot experiments were 

 made to determine the influence on barley of (1) growing in sandy, 

 clayey, and limy soils, respectively; (2) of excessive dryness or 

 humidity, and (3) of an excess of phosphoric acid or nitrogen. Rust 

 seriously attacked the plants, but the results obtained are thought to 

 be comparative. Pots of each of the difi'erent soils were placed in two 

 groups. One group received about the same amount of water as 

 would fall naturalh^ in a dry year; the other, double this amount, or 

 corresponding to a naturally wet year. Three pots in each group 

 received nitrogen and 3 phosphoric acid in excess. The yields 

 obtained in the well-watered pots were more than double for straw 

 and nearly double for grain those obtained in the scantil}' watered 

 pots. Nitrogen increased the A'ield of straw, but the yield of grain 

 was less than where phosphoric acid had been used. It also increased 

 the nitrogen content and diminished the starch content of the grain. 

 The phosphate, on the contrar}', jnelded harder, drier grain, contain- 

 ing less nitrogen and richer in starch and phosphoric acid. 



Field experiments with fertilizers, W. O. Atwatek and C. S. 

 Vnmjp^ {G(mnecfA.Gut Storris. Sfa. Ept. 1899, pp- 108-201^, dgrm. 3).— 

 This report includes the results for the last three years of experiments 

 on corn, cowpeas, and soy beans, to determine the efiects of nitrogen 

 in different quantities and combinations in the fertilizers applied and, 

 further, the results of a rotation soil test. The results for each of the 

 three years are given in tabular form and discussed at some length. 

 The experiments have now been carried on for a nimiber of years. 

 The results of the soil test for a period of ten years are summarized. 

 Previous reports have been given in former publications (E. IS. K., 9, 

 p. 746). The fertilizer applications consisted of quantities of bone- 

 black, furnishing 53 lbs. of phosphoric acid per acre; muriate of pot- 

 ash, furnishing 82 lbs. of potash per acre; and difterent quantities of 

 nitrate of soda and sul])hate of ammonia. gi\ing 25, 50, and 75 lbs. of 

 nitrogen per acre. 



The experiments with corn showed that a fertilizer application of 

 nitrogenous and mineral fertilizers is nuich more efl'ective than min- 

 eral fertilizers alone. Quantities of nitrogenous fertilizers supply- 

 ing from 25 to 50 lbs. of nitrogen per acre, in connection with liberal 

 quantities of phosphoric acid and potash, are reconnnended. In most 

 cases, the largest percentages of protein in the crop were found where 

 the largest quantities of nitrogen were used in the fertilizers. The 

 yield of the leguminous crops was but slightly increased by the use of 



