Experiments with Humogen. 7 



SERIES I -continued. 

 TESTS WITH POTATOES. 



Planted June 10, one tuber per pot. The weight of the produce in 

 each case is given in the table below. 



OBSERVATIONS RECORDED DURING GROWTH. 



July 10. All the plants had appeared, except trials dressed with- 

 Humogen (30%), Humogen with Complete Fertiliser, and Rito (20%). The 

 Farmyard Manure with Complete Fertiliser, Complete Fertiliser alone, and the 

 plain soil Control were strongest in growth. Between the remainder there 

 was little difference to be seen. 



July 24. The Humogen series appeared very stunted and yellow, the 

 test containing 30% being the worst in this respect. At this date the two 

 leading sets were those dressed with Farmyard Manure. 



August 7. As regards growth of top, Complete Fertiliser alone, Farmyard 

 Manure with Complete Fertiliser, and Rito (10%), were the best sections. 

 Each showed up prominently, with excellent dark foliage. The Farmyard 

 Manure sets were not so tall as the foregoing but the haulm was very sturdy. 

 All the Humogen trials, Common Burning Peat, and the plain soil Control 

 were distinctly inferior, both in height and colour of foliage. 



September 24. The tests with Complete Fertiliser and Rito were 

 the tallest, but the plants were somewhat drawn. Although not so tall and 

 bushy, the Farmyard Manure sections were more sturdy in growth. The 

 Humogen series and the plain soil Control produced less foliage than any 

 of the other sets, and this was very poor in colour. 



October 4. On this date the tubers were lifted and weighed. 



