1050 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



It will be seen, therefore, that in every year a very substantial advan- 

 tage was gained by the use of 2 cwt. of nitrate of soda per acre for this 

 crop, the average gain over the three years being 1 ton 8 cwt. of Green 

 Beans per acre per annum, or an increase of nearly 45 per cent. 



The haulm, weighed as straw, also averaged nearly ^ ton more per acre 

 on the nitrated plot. 



The result of this experiment appears to us particularly interesting 

 and important to market gardeners. 



Scarlet Runners. 



Last year — 1902 — we also put down two plots of Scarlet Runners under 

 a similar scheme of treatment. But, owing to a mistake, the dressing of 

 superphosphate given was only 2 cwt. per acre, the plots being laid out, 

 without additional phosphates, on land which had been partly manured 

 for wheat with 2 cwt. of superphosphate per acre, but on which the crop, 

 being uneven, was " grubbed." 



We obtained a good crop of Beans, but, except that the nitrated plot 

 grew a few hundredweights of haulm (weighed as straw) per acre more 

 than the unnitrated plot, there was very little difference, the Beans as 

 gathered for market being about 6 tons per acre on both plots. 



Possibly a more liberal supply of phosphatic manure might have 

 enabled the plant to give a better account of the nitrogen supplied to it. 

 We hope, however, to repeat the experiment during the present season. 



Green Peas. 



We have also experimented with Green Peas during three seasons, 

 but have obtained little advantage as regards quantity from the use of 

 nitrate of soda, although there was a very marked influence on the quality 

 of the Peas. 



In 1900 and 1901 the Peas were of the variety Sharpe's ' Victor,' and 

 in 1902 Veitch's ' Perfection.' 

 The results are as follows : — 



GREEN PEAS. 



Annual manuring per acre 



Annual cost 

 of manure 

 per acre 



Weight per acre of Green Peas in pod 

 as picked for market 



Average 

 weight of 

 haulm 



1900 



1901 



1902 



Average of 

 three years 



per acre 

 harvested 

 as straw 



Dung, Phosphates, and 

 Potash (no Nitrate of 

 Soda) .... 



Duntf, Phosphates, Pot- 

 ash, and 2 cwt. Nitrate 

 of Soda 



£ s. </. 

 G 5 0 

 7 5 0 



tons cwt. 

 2 1G 

 2 14 



tons cwt. 



i H 



1 8 



tons cwt. 

 4 2 

 4 1\ 



tons cwt. 

 2 13| 

 2 14| 



tons cwt. 

 1 10f 



1 16 



It will ba seen that the average increase that can be attributed to the 

 use of nitrate of soda dees not exceed 1 cwt. per acre. 



