10 



ton's Mammoth Long- Red variety was used in the first section, and 

 the Yellow Leviathan variety in the second section. On the same land, 

 we sowed barley in the spring of 1904, using the Mandscheuri variety 

 on the first section, and the Oderbrucker on the second section. 



Taking the average of all the experiments in 1903, we find that the 

 Common Red Clover land produced 2.1 tons and the Alsike Clover land 

 3.6 tons of mangels per acre more than the Timothy land. In the 

 average results of the experiments for 1904, we find that the Common 

 Red Clover land produced 8 bushels, and the Alsike Clover land 7.2 

 bushels of barley per acre more than the Timothy land. The greatest 

 average yield of roots per acre (35.5 tons) in 1903, and the greatest 

 average yield of barley per acre (58.2 bushels) in 1904 were produced 

 on land which had received the first crop of Alsike Clover as green 

 manure. It is intended to sow these plots with another crop in 1905, 

 in order to study the manurial effects of the different crops plowed un- 

 der for a series of years. This whole experiment is being repeated at 

 the present time, as thirty-two other plots were treated in 1904 in the 

 same manner as the plots previously referred to were treated in 1901. 



We have previously conducted a series of experiments at the Col- 

 lege in order to ascertain the comparative value of clover and grass 

 sod for crop production. We first grew clover and grasses upon 

 separate plots and removed the crops, after which the land was plowed 

 and other crops were sown. The results, therefore, show the in 

 fluence of the roots remaining in the land upon the productiveness of 

 the crops following the clovers and grasses. In 1902, barley was sown 

 after each of four varieties of clover and three varieties of grasses in 

 four different places in our experimental grounds. The average re- 

 sults of the four tests in pounds of barley per acre were as follows : 

 Red Clover, 1516; Lucerne, 1450; Alsike Clover, 1427; Mammoth Red 

 Clover, 1408; Meadow Fescue Grass, 1068; Orchard Grass, 1015; and 

 Timothy, 946. It will, therefore, be seen that the Red Clover sod gave 

 an increase over the Timothy sod of 570 pounds, or nearly 12 bushels of 

 barley per acre. 



The results of this experiment help us to appreciate the beneficial 

 influence on the soil from the growing of clover. 



Winter Barley. Within the last twelve or fourteen years, we 

 have sown winter barley each autumn. When the winters have been 

 unfavorable, however, the barley has usually been winter-killed, and 

 in those seasons in which the barley survived the winter, the results 

 have been exceedingly good. In eight out of the past twelve years, the 

 barley has survived the winter well, the average yield for the eight 

 years being 64.1 bushels per acre. The crop during the last winter was 

 considerably winter killed, but the plants which were alive in the spring 

 made an excellent growth, and the yield obtained this season amounted 

 to 31.8 bushels per acre. This, however, is only about one-half as large 

 a yield as that shown for the average results for eight years. By mak- 

 ing use of the same variety of winter barley from year to year, we hope 



