554 



EXPERIMENT STATION RECORD. 



crop; the total yield of fruit, vines, and roots; the average yield of 

 fruit per plant and per square foot of bench area; the average weight 

 of fruits; the percentage of perfect shaped fruit; and similar data. 

 The authors believe tbat in every case the efficiency of the nitrogen 

 was limited by a scarcity of potash and that the crops took some potash 

 from the coal ashes used as soil. In a few cases where the fertilizer 

 applied contained no potash the plants were able to take considerable 

 quantities of it from the ashes. The same was true of phosphoric acid. 

 The principal data obtained from the tests of tomatoes in ashes and 

 peat are brought together in the following table: 



Tomatoes grown with different fertilizers. 



First crop. 



9 



10 



11 



12 



13 



14 



27 



28 



29 



30 



31 



32 



Second crop 



9 



10 



11 



12 



13 



14 



27 



28 



29 



30 



31 



32 



Fertilizer constituents. 



In the soil. 



Nitro- 

 gen . 



Grams. 

 32.7 

 32.7 

 40.0 

 47.0 

 40.0 

 47.0 

 40.0 

 40.0 

 40.0 

 40.0 

 40.0 

 40.0 



32. 7 

 32.7 

 40.0 

 47.0 

 40.0 

 47.0 

 55.0 

 55.0 

 55.0 

 :,:.. (i 

 55.0 

 55.0 



Phos- 

 phoric 



acid. 



Grams. 

 8.1 

 10.0 

 10.0 

 10.0 

 10.0 

 10.0 

 0.0 

 4.(1 

 8.0 

 10.0 

 12.0 

 15.0 



8.1 

 10.0 

 10.0 

 10.0 



io.o 



10. 

 15.0 

 21.0 

 21.0 

 24.0 

 27. 



:jo. o 



Potash. 



Grams. 

 29.3 

 35.0 

 35. 

 35.0 

 40.0 

 45.0 

 35.0 

 35.0 

 35.0 

 35.0 

 35.0 

 35.0 



29.3 

 35.0 

 35.0 

 35.0 

 40.0 

 45.0 

 50. 

 50.0 

 50.0 

 50.0 

 50.0 

 50.0 



In the crop. 



Nitro- 

 gen. 



Gin ins 



12.68 

 13.88 

 14. 92 

 17.26 



19. 15 

 21.65 

 13.30 

 17.04 

 13.34 

 15.49 

 19.83 



20. 66 



17.65 

 17.66 

 22.26 

 20.33 

 22.54 

 26.06 

 24. 94 

 24.14 

 24.18 

 31. 33 

 24.28 

 25.14 



Phos- 

 phoric 

 acid. 



Grams. 

 5.09 

 5. 53 

 6.14 

 6.31 

 6.85 

 7.29 

 4.28 

 5. 10 

 4.29 

 5.81 

 7.05 

 7.59 



6.53 

 0.71 

 9.41 

 7.52 

 7.74 

 7.81 

 8.50 

 7.77 

 7.12 

 10. 15 

 7.79 

 7.90 



Potash. 



Grams. 

 18.74 

 20.97 

 22.54 

 25.54 

 33.47 

 36.51 

 21.75 

 24.75 

 19.52 

 24. 01 

 30.12 

 31.24 



35.09 



35. 65 



42.79 

 38.80 

 42. 112 

 46.66 

 43.04 

 311. 00 



36. 95 

 54. 19 

 42. 48 

 43.12 



Weight of— 



Grams. 

 2, 987 

 3,847 



4, 425 



5, 274 

 7, 548 

 8,042 

 4,269 

 5,140 

 4,804 

 5,795 



6, 599 

 7,214 



7,987 



7, 682 

 10, 385 



9,507 

 10, 427 

 11,407 



8, 902 

 9,661 

 9,405 



10, 135 



9, 337 

 8,950 



Roots 



and 



vines. 



Grams 

 271.1 

 290.7 

 294.1 

 322. 3 

 383.1 

 406.6 

 308.7 

 327.8 

 351. 

 313.5 

 387.0 

 387.5 



477.0 

 537. 

 532.0 

 582. 

 637. 

 721.0 

 686.0 

 452. 

 659.0 

 808.0 

 556. 

 520 o 



Average 

 weight 



of a 

 single 

 fruit. 



Grains. 

 57.4 

 55.6 

 70.8 

 64.7 

 84.5 

 84.2 

 79.0 

 87.0 

 65.0 

 79.0 

 70.0 

 78.0 



138.0 

 125.0 

 120.0 

 118.0 

 124. 

 116.0 

 113.0 

 112.0 

 117.0 

 97.0 

 102.0 

 108.0 



Tomatoes were also grown in compost of 2 parts turf and 1 part 

 manure. Fertilizers were applied to some of the compost plats, but 

 they did not increase the yield. In the following table the results 

 obtained from the compost plats are compared with the results from 

 those plats of coal ashes and peat which received the largest amounts 

 of fertilizers. 



Tomatoes produced in compost and in ashes and peat. 



