14 



N. H. Age. Experiment Station 



| Bulletin 256 



alone on these plots. Lime, both in two-ton and four-ton applications, 

 showed significant yields. After another season's work on these plots 

 the results for a five-year period are to be published in bulletin form. 

 In the potato plots at Colebrook phosphorus has proved thus far a 

 sensitive element, Leaving it out of the formula depressed the yield 85 

 bushels per acre, while doubling it over the regular 5-8-7 formula in- 

 creased the yield 56 bushels per acre. More response was obtained for 

 varying the potash than in the previous year. Leaving potash out of 

 the formula depressed the yield 115 bushels per acre and where lime 

 was introduced 178 bushels. Increasing the potash from 7 to 10 per 

 cent increased the yield 52 bushels. Varying the nitrogen does not ap- 

 pear to have so much influence. Judging by the average yields of the 

 potatoes in the first two years of this experiment, much better returns 





This method was used in weighing the j'iclds on fertilizer 

 test plots. 



might be expected from one ton of a 5-16-10 fertilizer than from IV2 

 tons of a 5-8-7. (Purnell Fund) 



Variety Tests 



A comparative trial of straight seedings of white Dutch and Ladino 

 clover on the Carter form at Boscawen indicated that the Ladino, a 

 giant variety of white Dutch, outyields the white Dutch 22.7 per cent. 



Trials of prominent strains of flint and dent corn now being grown in 

 New Hampshire were also made at Boscawen, together with a very 

 early strain of flint corn developed for northern Wisconsin conditions. 

 Yields showed the following results from four-row plots after reducing 

 to the same moisture content: John Hutchins, Carroll, 40.3 bushels; 

 Charles Cotton, Strafford, 35.9 bushels; Mrs. Ida M. Bell, Coos, 33.8 

 bushels; Fred A. Roy, Cheshire, 33.6 bushels; Fred W. Smith, Sullivan] 

 33.3 bushels; A. B. Locke, St ralfonl, 33.2 bushels; .!. 1). Porter, Sulli- 

 van, 32.7 bushels; Charles Thompson, Carroll, 32.6 bushels; Wisconsin 



