Food for that fertilizing with phosphoric acid and potash may be 

 Pl * nts neglected. Against such an error you are warned in the most 

 I8a emphatic manner. Plants can not live on nitrogen alone, 

 phosphoric acid, potash and lime are just as necessary to 

 them as nitrogen, but fertilizing with nitrogen is often alto- 

 gether neglected. Potash and phosphoric acid are much 

 cheaper than Nitrate of Soda, we are afraid of the cost of 

 dressings of nitrogen. We fertilize with phosphates and 

 kainit, and hope that the nitrogen of barnyard manure, the 

 nitrogen from green manuring, leguminous crops, and the 

 rain and nitrogen-collecting soil-bacteria, will provide so 

 much nitrogen that we need buy no Nitrate of Soda. This 

 is a mistake; one sees with amazement how much land there 

 is hungering for nitrogen, if one walks through the fields of 

 grain at the beginning of June. The profit which is to be 

 made by rational fertilizing has also been shown. By ra- 

 tional fertilizing with nitrogen, that is: You are not to top- 

 dress with too much nor with too little Nitrate of Soda, and 

 you are not to apply the nitrogenous salt at the wrong time. 

 You know how to proceed in order to ascertain what are the 

 quantities of Nitrate which are to be employed under given 

 circumstances. A careful observation of the suggestions here 

 given, will result in more profitable returns. 



The Cost of Nitrate of Soda. 

 Its Use more Profitable than ever. 



The steady upward movement in prices of Nitrate of 

 Soda has been attracting widespread attention, and the unin- 

 terrupted gradual rise in prices is warranted, based on solid 

 facts which govern the industry. Labor troubles and the 

 extra cost of production, together with the steady increase in 

 the consumption, have been and are factors in the situation. 

 The increase in the consumption in this country for several 

 years has been striking. Labor troubles in the Nitrate re- 

 gions following the great earthquake, as the laborers wended 

 their way to Valparaiso and other sections of the country 

 where better wages were paid them, caused considerable 



