Sentence Examples

  • Of superphosphate to the acre at the time of sowing, followed, if the ground is in poor condition, by cwt.
  • The exhaustion of the soil induced by both barley and wheat is, however, characteristically that of available nitrogen; and when, under the ordinary conditions of manuring and cropping, artificial manure is still required, nitrogenous manures are, as a rule, necessary for both crops, and, for the spring-sown barley, superphosphate also.
  • Phosphorite, when occurring in large deposits, is a mineral of much economic value for conversion into the superphosphate largely used as a fertilizing agent.
  • 2 The early settlers found the bones of the bison scattered over the prairies, and after the construction of railways the gathering and shipping of these for use in sugar refining and in the manufacture of superphosphate became temporarily a profitable industry.
  • The artificial manure known as "superphosphate of lime" consists of this salt and calcium sulphate, and is obtained by treating ground bones, coprolites, &c., with sulphuric acid.

Also Mentioned In