POTATOES. 5t 



•*2. Chemicals whetT properly mixed can and do give greater in- 

 crease.of crop than commercial fertilizers. 



"3. The average chemical composition of fertilizers for New- 

 Hampshire should be phosphoric acid, 9 to 11 per cent.; potash, 9 to 

 i5^per cent.; nitrogen, 2 to 4 per cent, whereas the fertilizers offered 

 us in the market average, phosphoric acid, 11 pe|r cent; potiash, 2,5 

 per cent; nitrogen, 2.5 per cent.'* ^ i, , 



NEW JERSEY, 1889.'^ r , 



By J. M. White, New Brunswick, Middlesex do. Tenth Annual' 



Report. Soil — Light, dry sandy gravel. ^ g 



"Marked effects were observed from the use of both jniiriate arid 

 kainit. ... At these prices ^he net profit per' acre from the use of 

 muriate of potash was $13.20; from kainit, $16.67."' 



Twfl|fth Annual^ Report, page 108. Experiments were made in three 

 different localities in the State, and on different soils. 



The effect of different forms of potash salts: "Averaging the 

 three experiments, the yields from muriate and sulphate are practically 

 identical, , . . ,^j;, 



. . . "In the use of muriate or sulphate the main consideration is 

 the cost, the cheaper muriate being quite as effective as the sulphate, 

 and the direct application of large quantities of kainit is notadyi^fiblc^ 

 tor potatoes.'V p, -id""' 



The potaj^oes were subjected to a chemical analysis, the result qi 

 which demonstrate^ that sulphate of potash produced the best p|>|fi- 

 toes. This was confirnied by testing the cooked potatoes. 

 !g ^>\ NEW^ YORK (Geneva Station)rr,18Q9. ^ 



By P.^Collier, Director. Eighth Annual Report. It is stated tha| 

 the ash of potatoes contains 59.8 per cent, of potash, and. one of the. 

 main objects of the experiment was to find out if the potatoes are 

 ll,rgely in need of potash, as indicated by their compo^fflon. Potash 

 produced a large increas^^. The average yield from plfetseomtaining 

 no fiotash is 85.5 bushels per acre; that from potassiuirt siil^hate is 

 • 112.5 bushels; frotnf potassium chloride I35 bushels. '^^ ■^'■ 

 By p. Collier, Director.^ Special Experiment with Pptash and^ 

 '"Nitrogen. Ninth Annual Report. ' " --W^- • = 



These results indicate: "i. That for piotatoes, potaslium ch%*id«? 

 is a good, safe fertilizer, even on some Clay soil^, where potash mky b6 

 K^said to be present in considerable quantity." ' ? :• 



