88 CYANAMID — MANUFACTURE, CHEMISTRY AND USES 



plant to withstand drouth. Dropping the fertilizer in narrow 

 rows favors the development of bunched root systems, which 

 will do very well as long as the supply of fertilizer lasts and 

 the water supply is good, but are insufficient for the demands 

 of the plant in dry weather. If the application is large broad- 

 casting one-half or two-thirds of the fertilizer before plowing, 

 or after plowing and before harrowing, with the application of 

 the remainder in the row before seeding, or along the row 

 after the plants are up, will be found to produce the best 

 results. Care should be taken that the fertilizer is well mixed 

 with the soil and that pure fertilizer and seed are not in direct 

 contact, thereby avoiding the so-called "burning" of young 

 plants. When the fertilizer is applied alongside the rows after 

 the plants are up, it should be well worked in with the cultiva- 

 tor or with hoes. Care should be taken not to get highly con- 

 centrated fertilizers on the leaves of the plant, especially if the 

 plant is wet. Since Cyanamid is a medium-slow-acting fer- 

 tilizer, it should be applied to the crop not less than 70 to 80 

 days before the harvest, in order that the nitrogen may be 

 completely utilized by that crop. 



The quantity of Cyanamid that can be economically applied 

 at one time is preferably limited to 150 pounds per acre. 

 Experience has shown that the most economical utilization 

 of a nitrogenous fertilizer is obtained when it is used in con- 

 junction with the other fertilizing elements, phosphorus and 

 potassium. For this reason, it is recommended that Cyanamid 

 be used as a part of a fertilizer mixture, rather than that it 

 be applied alone. 



if Cyanamid is to be applied to very acid soils, such soils 

 should be put in productive condition by thorough judicious 

 liming some time before the application of the fertilizer. The 

 application of barnyard manure will help to establish the 

 bacteria that are deficient in such soils. 



When Cyanamid is applied alone, better results will be ob- 

 tained if it is applied several days before the seed is sown, 

 especially if the applications are large. For small applications. 



