Progressive Agriculture 



149 



V 



No. 36. Plant Food the Result of Tillage 



Showing difference in stooling of wheat on adjoining fields, one 

 having been summer tilled, the other given ordinary treatment, 

 planted same day and pulled 41 days later. See page 79. 



No. 37. Loss of Plant Food From Weeds 

 Showing how a few weeds depleted the moisture and checked 

 the necessary chemical action. See page 80. 



