250 



good dressing of dung is profitable. Artificials appear to assist 

 in giving the crop a start, particularly in an unfavourable season, 

 and as it is a matter of the greatest importance to secure a regular 

 plant, the use of artificial dressings, in some form or other can for 

 this reason be recommended. " 



Manuring of Mangolds at Cirencester. -- (Roy. Agric. Coll., 

 Cirencester, Agric. Students' Gazette, December 1909). The Jour- 

 nal of the Board of Agriculture, June 1910, Vol. XVII, N 3, 

 p. 227. 



" All the plots on which this experiment was conducted were 

 dressed with 12 tons per acre of farmyard manure. Eleven dif- 

 ferent mixtures of artificials were then applied, each plot being in 

 duplicate. The soil varied in depth and texture considerably, and 

 the difference between duplicate plots was in some cases large. 

 Only the produce of 1 / 8o th of an acre was weighed, and errors are 

 likely to have arisen from this cause. All the nitrogenous manures 

 gave an increase, though not always sufficient to show a profit 

 when the cost of the dressing was taken into account. The hea- 

 viest crops were given by 3 cwt, of superphosphate and 4 cwt 

 kainit, together with either i cwt. sulphate of ammonia, 143 Ib ni- 

 trate of soda, or 175 Ib., nitrate of lime, these amounts containing 

 equivalent quantities of nitrogen. When the roots were valued at 

 i o.f a ton these three mixtures all showed a profit." 



" A second experiment was intended to test the effect ot kainit 

 and of nitrogen in four different forms. No farmyard manure was 

 applied but all the plots received 3 cwt. per acre of superphosphate. 

 The plots in this experiment also were very irregular and the area 

 weighed was very small. The general result was to favour the 

 employment of a " complete " manure. Taking the average of the 

 six plots receiving kainit, superphosphate, and nitrogenous ma- 

 nures, against the average of the five plots receiving superphosphate 

 and nitrogenous manures only, there was an increase in yield of 

 3 x / 2 tons of roots in favour of the complete mixture. " 



Experiments of Roots, etc., by the Midland Agricultural 

 and Dairy College. Notice in Nature, Vol. 83, April 141)1, 

 London, 1910, p. 199. 



Field trials with mangolds, swedes and seeds hay. The trials 

 are made with the aim of discovering the best varieties of the 

 particular crops and the most suitable manures for use in the district. 



