Co-operative Forage Exyerwients in Southern Victoria. 109 



In introducing- the manured strips into the experimental fields it 

 was hardly expected that exact data would be obtained on questions of 

 fertilization. Little more than indications were expected as to pi-obable 

 soil dehciencies and the extent to which these might influence the 

 adaptability of the various districts for the different crops tested. 

 The area of each section both manured and unmanured was too 

 small to be sufficiently free from those great natural variations 

 in the character and fertility of even adjoining soils to give 

 reliable figures as to the effect or otherwise of manure. Where 

 much larger areas are used for comparison, the effects of such 

 soil irregularities are naturally considerably reduced ; but although 

 the fertilization returns from the forage fields may suffer from these 

 drawbacks and show in cases apparent irregularities the results have 

 nevertheless given valuable information as to the manurial require-, 

 ments genei-ally of each crop, and the approximate increase in yields 

 at least we might expect from appropriate fertilization. The following' 

 table will show the average yields of all the unmanured sections of 

 each crop, the average yield of the various manured sections and the 

 increases due to the use of these manures. In the case of each crop 

 the returns from a few fields shewing pronounced irregularities, due to 

 known causes, have been omitted from the table. 



Returns Showing Average Yields of the Various Crops with Increases 

 Produced by Manures. 



An examination at the figures will show that two facts stand out 

 with great clearness. The first, that phosphoric acid on section B 

 has shown marked increases in yield over the uumanured sections, and 

 that in section C where an addition of nitrogen to phosiihoric acid has 

 been made, still larger increases have been obtained than where 



