306 ' roMAom crops 



in destroying the fungus that causes clubroot. 

 After the lime is harrowed in or before liming, it 

 may be advisable to apply part of the fertilizers. 

 Amounts frequently used are 400 to 800 pounds 

 of acid phosphate, 15 to 16 per cent available, or 

 its equivalent, i. e., 60 to 120 pounds of phos- 

 phoric acid; 100 to 150 pounds of muriate of 

 potash, and fifty pounds of nitrate of soda per 

 acre. Manure, lime and fertilizers should be uni- 

 formly applied. This important matter should not 

 be neglected. If the seed is sown where the plants 

 are to grow, the last harrowing should be done 

 with the Meeker harrow or some tool which will 

 fit the surface equally well." 



The bulletin also gives the yields of varieties 

 for 1904, 1905 and 1906, and states that the fol- 

 lowing are essentials of a high yield: 



"First, rotation. It matters little what crops 

 be grown, provided they are in accordance with 

 rational practice, the main point being that when 

 cabbage crops follow each other in succession the 

 soil is likely to become infested with the clubroot 

 fungus, which will render it unfit for gi-owing cab- 

 bage for a number of years. Second, early plant- 

 ing. This gives time for full growth and develop- 

 ment of the heads. Third, uniform stand. The 

 number of plants per acre may vary between seven 

 and ten thousand. As with many other tilled 

 crops, however, it is more essential to have the 



