BULLETIN 133, U. S. DEPARTMENT OF AGRICULTURE. 



The soil treatment applied to the plats which produced barley was 

 substantially the same as that applied to the wheat plats during the 

 three years. Plowing and other operations necessary in preparing 

 the seed bed were the same on the barley plats as on the wheat plats, 

 and fall irrigation was applied at the same time each year. A variety 

 of barley known as California Feed was used during each of the three 

 years, and it was seeded at the rate of 7 pecks per acre. 



In the spring of 1911 the barley was planted on April 20. At this 

 time the surface soil on both series was'very dry, and very little seed 

 geiTninated until after a rain of 0.35 inch which came on May 2. This 

 rain supplied sufficient moisture to the fall-irrigated plats, but was not 

 sufficient to germinate the grain on Series VII, where no fall irriga- 

 tion had been applied. The barley on Series VII did not come up 

 until after a heavy rain on May 15. After this rain the barley on both 

 series grew well. The first irrigation was applied to the barley plats 

 on both series on June 12. It was noted that the soil on Series VII 

 absorbed moisture much less rapidly that that on Series VI and that 

 the depth to which the irrigation water penetrated was somewhat 

 greater on Series VI than on Series VII. The barley in both series 

 was irrigated the second time on June 27. At this time the barley 

 on the plats which had been fa]l irrigated showed the need of water 

 much less than that on the plats on Series VI, but, in order to preserve 

 uniformity, all plats were irrigated. The barley was irrigated twice 

 during the season. The grain on both series matured on July 26. 



In the spring of 1913 soil conditions at planting time were much 

 more favorable than in 1911. This apparently was clue to the rela- 

 tively high rainfall of the preceding autumn, as was mentioned in con- 

 nection with wheat. The seed was planted on April 24. The barley 

 on both series germinated well and good stands were secured. The 

 plats were irrigated twice during the season. The grain on both series 

 matured July 30. 



In the spring of 1912 barley was planted on both series on April 28. 

 The soil conditions were fairly favorable. There was sufficient mois- 

 ture in the soil to germinate the seed and support early growth. The 

 plats in both series were irrigated twice during the season. The grain 

 ripened on both series on July 28. 



The numbers of the plats, the height of the barley at maturity, the 

 yields of straw and of grain, and the number of pounds of straw accom- 

 panying the production of each bushel of grain during the three years 

 are given in Table IV. The plat numbers were the same in each series 

 each year. The figures in the columns headed "' VI " relate to the fall- 

 irrigated plats, while those in the columns headed "VII " relate to the 

 plats which were not fall irrigated. 



