II Nov.. 1912.] 



W//caf and its Cultivatioji. 



Mamiriiifi not a Suhstifiifr for TUJaiio. 



It imisl not l)c jissuuu'd tliJit tlie Mpplicjitioii of arlificinl iiuiiiiifcs 

 will relieve the fai'iner of the respoiisibilil y of thoronjih cultivation. 



There are some who appear to think that heavily manured crops do 

 not require the same amount of tillage as unfertilized crops. As a 

 matter of fact, heavy dressings of mannre cannot be used at a full pro- 

 fit without thorough preparatory tillage. Thorough tillage always was^ 

 and always will be, a prime factor for the ])roduction of heavy crops. 

 Jethro Tull doubtless placed an exaggerated value on tillage operations 

 when he stated, more than a century ago. that manures were absolutely 

 unnecessary if tillage operations were thoroughly performed, and that 

 thorough tillage was the best substitute for manure. We. in the 

 twentieth century, should remember that while fertilizers are essential 

 on many soils for the production of profital)le crops, they do not give 



7. GREEN AJANURIAL TESTS, KUTHERGLEX EXPERIMENTAL FARM. 



their full measure of benefit unless the soil receives a tliorough pre- 

 paratory cultivation . 



How TO Determine Soil Deficiencies. 



The most satisfactory and practical method of finding out the 

 requirements of the soil is by systematic experimental work. Th(^ most 

 important i)oints requiring investigation with respect to mauurial 

 practice is to determine in each of the more important divisions of 

 the State the value of the various phosphatie, nitrogenous, and ))otassic 

 manures singly and in various combinations, the value of lime when 

 applied in different forms, the cumulative as well as the immediate 

 efl:'ect of each application, and the most economical method of restoring 

 the organic matter. Permanent experimental plots have been laid 

 down at the Rutherglen Experimental Farm with the object of 

 securing exact information on these points. The results will be made 

 available from time to time. 



{To he confiniK d.) 



