Fertilizer and Seeding Experiments with Root Crops. 427 



These results indicate that 2 pounds of seed per acre is the most 

 economical of the different amounts used in the experiment. One pound 

 per acre of ordinary commercial seed is not sufficient to give a good 

 stand even under the most favorable conditions. 



Fertilizer experiment 



The object of this experiment was to determine the fertilizer require- 

 ments of mangels when grown on Dunkirk clay loam and under the 

 climatic conditions which obtain in this locality. The variety used 

 for this test was the Norbiton Giant. The fertilizers were sown broad- 

 cast. This was done just before the seed was sown with the exception 

 of plat 1446, on which the nitrate of soda was applied after the plants 

 were thinned. The yields are given in the following table: 



TABLE VII 



Showing Yield of Fresh Substance, Per Cent and Yield of Dry Matter, 

 Number of Plants Per Acre, Yield of Tops, and Per Cent 

 OF Total Weight in Tops, 1907 



Plat 



No. 



Treatment 



Per 



cent cf 

 total 



weight 



in 

 ■tops 



1442 



1443 

 1444 



1445 

 1446 



1447 

 1448 

 1449 



1450 



Nothing 



120 lbs. Dried blood 



60 lbs. Dried blood. . . 

 60 lbs. Nitrate of soda. 



Nothing 



60 lbs. Dried blood 



60 lbs. Nitrate of soda* . 



1 20 lbs. Nitrate of soda. . . 



Nothing 



240 lbs. Acid phosphate. . 



80 lbs. Muriate of potash 



25s 

 22 . o 

 23.1 



22.8 

 22.8 



23-5 

 21.9 

 19.7 

 19.4 



* All dry matter determinations were made under the direction of Prof. G. W. 

 Cavanaugh. 



* Applied after thinning. 



