APPENDIX B 



EFFECTS OF TREATING PLANTS WITH 

 HUMOGEN 



THE following are among the reports that have been 

 received from growers as to the effect of using bacterized 

 peat. The first groups of results are those obtained by 

 Mr. Machen (who is now assisting Professor Bottomley) 

 from experimental plots at Eton Experimental Gardens 

 in 1913 and 1914. In some instances it has been possible 

 to tabulate the results. As further reports are received 

 from growers they will be added to this appendix in 

 subsequent editions. 



ETON EXPERIMENTAL GARDENS (1913-1914). 



(Report by Mr. Machen. The first report was quoted by Pro- 

 fessor Bottomley in the lecture he delivered before the 

 Royal Society of Arts in 1914.) 



The whole plot was 51 feet long by 36 feet wide. The 

 plot was divided across its breadth into three equal 

 portions of 15 feet each, and a smaller portion of 6 feet. 

 This gave three plots of 60 square yards each, and a 

 small plot of 24 square yards. These plots were treated 

 as follows: Plot i, complete artificial manure (top-dress- 

 ing), 4 ounces per square yard; Plot 2 (small plot), no 

 manure; Plot 3, bacterized peat (top-dressing), 9 ounces 

 per square yard ; Plot 4, one ton farmyard manure (half 

 dug in subsoil and half in top spit). 

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