TOMATOES. 67 



a soil test, combined with test to ascertain the best form and amount 

 of potash to use. The highest net gain, amounting to $138.07, came 

 from a combination of cotton-seed meal with muriate of potash, pro- 

 ducing 237 lbs. of tobacco per acre, against 87 lbs. on the unmanured 

 plots. Single elements alone produced also a good increase, of which 

 potash produced the most. 



"In the above discussion, those plots on which potassium chloride 

 was used have been shown to have excelled all others in total product 

 in net cash value, and in total cash value, save that the heaviest ap- 

 plication of kainit balanced the lowest of potassium chloride in total 

 cash value, and stands next to it in net result; while the lowest appli- 

 cation of potassium sulphate resulted in giving the highest price per 



pound." 



PENNSYLVANIA. 1893. 



Report of the Pennsylvania State College for the year 1893, p. 8^. 



'*The double carbonate of potash and magnesia slightly surpassed 



the sulphate of potash, the effect being most noticeable at Rocky 



Spring." 



1894. 



By Wm. Frear and E. J. Haley. Bulletin No. 30. Experiments were 

 begun in 1893 and continued in 1894, from which the following con- 

 clusions were drawn: 

 "The tobacco grown with the use of a fertilizer composed of 

 dissolved bone black, double carbonate of potash and magnesia, and 

 cotton-seed meal gave especially large leaves of highly desirable text- 

 ure; next to these came leaves grown with a fertilizer composed of 

 dissolved bone black, sulphate of potash, cotton-seed meal, and sul- 

 phate of ammonia. Pending full report, these fertilizers are especially 

 commended for use." 



TOMATOES. 



DELAWARE, 1890. 



By J. Heyd, near Fulton, Kent Co. Bulletin No. 11. 



"Nitrate of soda is regarded as a specific for this plant. This has 

 been demonstated several times. Mr. Heyd's work, however, shows 

 that exceptions to this rule may be expected. Neither alone or in com- 

 bination with phosphoric acid and potash did the nitrate prove that it 

 causes an increase sufficient to pay for its purchase and use. 



**If a profit results from any application, it must be credited tc 

 the mixture of phosphoric acid aod potash. At $6 per ton, of toraatoc8.« 



