476 Report of the Horticulturist of the 



although some could not be marketed on account of injury from 

 tip-burn and rot. A portion of the crop was shipped to a com- 

 mission man at Rochester, jST. Y., who pronounced it equal to the 

 best grades from Boston houses. 



There was a marked difference in the firmness, size and appear- 

 ance of the lettuce on different soils as may be seen by referring 

 to the averages of the records for Crop IV which are given in 

 the following table. There was considerable difference too, in the 

 lettuce on different soils as to its susceptibility to rot and tip-burn. 



In order that the results with Crops I, II, III and IV may be 

 more readily compared the averages of their records are presented 

 together in Table 4. 



Table IV. — Average Time of Growth, Weight per Head, etc, of Forced 



Lettuce. 



(crops I, II, III AND IV.) 



Soil ingredients. -i £5 £ • S I o 



S o+-> p, ® a ■ 



^ ti r; Sol a) 



« ' o. *" to -^ -SS^-S 



S-H Z? _rt TO S <D . Co 



Nn S • a k * esd • "53 -a * S-S- ,*. 



of soil. g S Sfl ^£S *$ * ««<" 18 



>> • a • w-d-w es » d — -^ S 



Per ct. Per ct. Per ct. Per ct. Ozs. Perct. 



1895. 



1 63 26.3 10.7+ I Oct. 26 102.9 6.25 100 



2 49.1 42.4 8.5+ I 26 101.7 6.27 100 



3 41.3 51.7 7 f I 26 102.3$ 6.28 983 a 



1896. 73 

 4 52 2 32.3 15.5§ II Oct. 27 97.3J 5.36 96 g 



5 19.9 64.6 15.5S II 27 96.2$ 5.49 96 8 & 



6 84 5 15.5§ II 27 97 $ 7.07 96 £ & 



1897. g 



4a 52.2 32.3 15.58 III Feb. 18 76 4 6.51 100 56 £ 



5a 19.9 64 6 15.58 III 18 77.6 6.84 100 50' *1 



6a 84.5 15 5g III 18 76.7 7.70 100 52 £ 



7 100 § IV Nov. 23 95.9 7.50 100 76 



8 100 g IV 23 93.9$ 7.94 97.2 95 0.1 



9 661 331 § IV 2i 89.4$ 7.49 97.1 59 8.07 



10 66| 33£8 IV 23 83.2$ 8.63 98.5 97 6.2 



11 16^ 50 33£§ IV 23 86.3 8.23 100 85 21 



* In estimating the injury from tip-burn, 100 indicates greatest injury. 

 f No commercial fertilizers were added to these soils. 



§ These soils were given N P2 05 and K2 O in commercial fertilizers in lib- 

 eral quantities. 



% Not including plants which failed to reach marketable condition. 



