1891.] PUBLIC DOCUMENT — No. 33. 135 



ON FIELD EXPERIMENTS. 



V. Some suggestions regarding the question, How can we 

 improve in an economical way the productiveness of our farm 

 lands ? 



VI. Experiments to ascertain the effect of different combina- 

 tions of nitrogen, nitrate of soda, sulphate of ammonia and 

 organic-nitrogen-containing materials, blood, as well as the absence 

 of nitrogen-containing manurial matter, under otherwise cor- 

 responding circumstances, on oats. (Field A.) 



VII. Field experiments with prominent grasses and legumi- 

 nous plants, to study their composition and general economical 

 value in our section of the country. (Field B.) 



VIII. Field experiments with reputed field and garden crops, 

 to ascertain their adaptation to our soil and climate. (Fields 

 C and D.) 



IX. Field experiments to study the economy of using different 

 commercial sources of phosphoric acid for manurial purposes in 

 farm practice. (Potatoes. Field F.) 



X. Experiments with grass land. (East Field Meadow.) 



XI. Report on general farm work. 



XII. Professor Humphrey's report. (On diseases of farm 

 plants.) 



T. Some Suggestions regarding the Question, How 



CAN WE IMPROVE IN AN ECONOMICAL Way THE 



Productiveness of our Farm Lands? 



An insufficient supply of suitable manurial matter, 

 required for the successful and liberal production of the crops 

 to be raised, is at present universally recognized as being the 

 most fatal circumstance in any system of farming for profit. 

 Adopting this conclusion as the correct verdict of past and 

 present experience in agricultural industries, it becomes 

 most desirable, in the interest of satisfactory pecuniary 

 returns, that every available manurial resource of the farm 

 should be turned to account to its full extent. To secure 



