206 EXPERIMENT STATION RECORD. 



total plant food was contained in the tops; on May 12 the proportion had increased 

 to five sixths, on May 24 to seven eightlis, and on May 31 to nine tenths. 



"These points are important in showing (1) that no good gronnds exist for the 

 statements so frequently heard that there is as much fertilizing value in the roots of 

 a clover croj) as in the tops; and (2) that as a green manure this plant increases in 

 vnlue up to the time of maturity. . . . 



"Assuming that the entire amount of nitrogen contained in the whole crop repre- 

 sents a distinct gain to the soil, the crop harvested on April 24 added 103.7 lbs., an 

 amount of nitrogen equivalent to that contained in CAX lbs. of nitrate of soda, which 

 would cost, at present prices, in quantity, $15, or to the amount contained in 10 tons 

 of average-quality manure. . . . 



"The crop cut May 12 contained nitrogen equivalent to that contained iu 17 tons of 

 manure, and worth $25.50 per acre. . . . The average of the matured crops on May 

 24 and 31 contained per acre 200 lbs. of nitrogen and 6,500 lbs. of organic matter, or 

 equivalent to that contained in 20 tons of city manure, which would cost in that 

 form $30." 



Value of crimson clover for pasturage and for soiling (pp. 23-31). — 

 Crimson clover cut April 24, at which time it was suitable for early 

 grazing, afforded the following amounts of digestible matter per acre: 

 Fat, 50 lbs.; protein, 327 lbs.; carbohydrates, including fiber, 033 lbs., 

 or a total of 1,310 lbs. 



The cuttings made May 12, .24, and .'U were suitable for soiling, and 

 the average quantities of digestible matter per acre afforded by these 

 cuttings were as follows: Fat, 80 lbs.; fiber, 010 lbs.; protein, 058 lbs., 

 and carbohydrates, 1,480 lbs. This gives a total of 2,834 lbs. of digest- 

 ible matter grown on 1 acre, an amount which, "on the basis of 15.4 lbs. 

 of digestible organic matter j^er 1,000 lbs. live weight, is sufficient to 

 feed 10 cows in full flow of milk for 20 days." 



Experiments -with corn in 1893, D. X. Barrow {Lovisiana Stas. 

 Bui. ^ti, 2d scr., pp. 9()2-9(iii). — These consisted of exi»eriments with fer- 

 tilizers and with varieties. On account of a drought in July the 

 results with fertilizers are not reported. In the test of 3 varieties of 

 corn from foreign countries, 7 from Northern States, 17 from Western 

 States, and 10 from Southern States, Mosby Prolific, a late Southern 

 variety, gave the largest yield, 74.3 bu. per acre. This was followed by 

 Improved Leaming, an early variety from the West. Varieties matur- 

 ing at intermediate dates were injured by drought. 



Experiments -with cotton in 1893, B. N. Barrow {Louisiana Stas. 

 Bui. 28, 2d ser., 2)}). 906-969). — These embrace tests of varieties, of fer- 

 tilizers, and of distance. Of 41 varieties tested, the largest yield of 

 lint, 732 lbs. per acre, was made by Hawkins Improved; next in order 

 of yield were Southern Hoi)e, Peterkin New Cluster, and Hunnicutt. 

 The largest proportion of lint to seed cotton, 37 per cent, was afforded 

 by Bolivar County. The results of the fertilizer test are not reported, 

 on account of injury from drought. 



Distance experiments were made on land unfertilized for 4 years. 

 The rows were 3, 4, or 5 ft. apart; the distance in the drill 1, li, or 2 ft. ; 

 and the plants were grown singly and two in a place on different plats. 



