38 



The Bulletijst 



good results tlie weight of evidence is that the chief value has been from 

 the common salt which the kainit contains in large quantities. Average 

 kainit will contain from 30 to 40 per cent of this material. Ordinary- 

 waste meat salt used at the rate of 400 to 600 pounds per acre has been 

 found in experimental work to greatly reduce this trouble with cotton. 

 It is more than probable that for such crops as tobacco, potatoes, and 

 legumes, applications of potash, when prices are normal, will in many 

 cases, at least, prove to be profitable. Especially is this so when the 

 soils are low in organic matter, notwithstanding fairly good crops might 

 be grown without such applications. In experiments on the Alamance 

 Silt Loam type of soil near Monroe in Union County, the soil being 

 fairly low in organic matter, it has been found that the use of potash 

 when obtainable at normal prices has increased the yields of an oat- 

 and-vetch mixture for hay, and of seed cotton in sufficient amounts to 

 justify its use. It is believed that with the organic matter supply 

 materially increased in this soil, as well as other types of soil occurring 

 in the county, the necessity for applications of potash may not be in many 

 cases necessary in order to secure good yields. 



Fio. 11. — This grass mixture will do well on the soils of the county, if properly 



put in and manured 



With all the main types of soil occurring in the county when they 

 arc low in organic matter, nitrogen has been shown to be of chief im- 

 portance. Upon increasing the amount of organic matter in the soil 

 the necessity for applications of materials carrying nitrogen in available 

 form is greatly reduced. All the soils of the county, types of which have 

 been examined chemically, are low in nitrogen and organic matter, and 



