CORN. 21 



f'**Continued application of barn-yard manure is not the most 

 economical method of supplying plant food." 



NORTH CAROLINA, 1882. v?*T|? 



By C. W. Dabney, Director. Fifth Annual Report, page 75. 



"The results are favorable. A very distinct and important effect 

 of kainit is to suppress the growth of weeds and the coarser, rougher 

 grasses in meadows." 



CORN. 



CONNECTICUT, 1889. 



By M. H. Dean, Lime Rock. Second Annual Report, 1889. 

 Soil — A river terrace formation (on the Housatonic River). 



"The most marked effect came from use of potash salts. In 

 every case where potash was omitted there was a marked falling off 

 in the yield of grain, and the stalks were small and slender." 



*'The' average gain from the use of potash is three times that from 

 nitrogen. Potash was plainly the 'regulating ingredient' in the ex- 

 periment." 



By Marion H. Dean, Falls Village. Second Annual Report. 

 Soil^Light sandy loam (on the Housatonic River). 



"The most marked features of the experiment are the heavy in- 

 crease; resulting from the use of potash, and the very slight benefit 

 arising from the use of phosphoric acid. After deducting the average 

 yield for the nothing plots, from plots i, 2 and 3, it is found that potash 

 aiorie increased the yield eight times over the nitrate of soda plot, 

 and fifty times over the phosphoric acid plot. With corn estimated 

 at 50 cents per bushel, and stover at 18. 00 per ton, the financial results 

 on these three plots are: From the use of nitrate of soda, $1.77 loss; 

 from the use of dissolved borie black, $3 76 loss, and from the muriate 

 of. potash, $13.17 gain." 



1891. 



By H. W. Sadd & Sons, Wapping. Fourth Annual Report. 

 Soil^^Light loam. 



"A fertilizer containing all the three ingredients — nitrogen, phos- 

 phoric acid and potash, with the potash in quite large proportions — 

 seems to be the best mixture for corn on this soil." 



