HORTICULTURE. 145 



bench space (28. 5 oz.) was obtained when the plants occupied 2 sq. ft. 

 of bench. Plants given li sq. ft. of bench stood second in yield, but 

 when thus closel}^ crowded together too severe pruning was required 

 to give satisfactory results. 



Fertilizers with surface v. sidnoatering (pp. 8-10). — The soil used was 

 a chw loam, to which 3 per cent of peat moss was added. In two 

 instances regular forcing soil was used for comparison, and in two 

 others sifted coal ashes, to which 3 per cent of peat moss was added. 

 Like amounts of mineral fertilizers (a mixture of 200 lbs. muriate of 

 potash and 350 lbs. acid phosphate per acre) were used on each plat. 

 Liquid manure was applied to the plats in some instances. Plats were 

 duplicated, one series being surface-watered and the other subwatered. 

 The yields obtained on the different soils b}- the different methods 

 of manuring and watering are shown in tabular form. The results 

 obtained are summarized by the author as follows: 



"In 5 of 7 plats sub watering has increased the yield — in one case nearly 50 per 

 €ent (49.22), and averaging for the 5, 31.13 jser cent. 



"Relatively, the increase caused by subwatering has been greater upon the nitrate 

 plat, the percentages of increase being for the nitrate 49.22, as against 46 for the sul- 

 phate, 39.15 for blood, .36.79 on the forcing soil, and 4.7 on the ashes. Upon the soils 

 used yard manure as a source of nitrogen is superior to the commercial forms applied, 

 \. €., nitrate of soda, sulphate of ammonia, and dried blood. The increase over nitrate 

 of soda under identical conditions was 5.11 oz. per square foot. 



"As a result of 4 crops without renewal of soil, sifted coal ashes with 3 per cent 

 peat, fed with a comjilete chemical fertilizer, has given, where surface watered, a 

 yield exceeding any other by 3.89 oz. per square foot, and under subwatering is 

 second only to the regular forcing soil." 



The effect of varying amounts of nitrogen on different soils (pp. 

 10-13). — Tomato plants were grown in boxes 18 in. square and 12 in. 

 deep, filled with cither nearl}^ pure sand, sandy soil, or clay soil. Three 

 boxes of each soil received mineral fertilizers (potash and phosphoric 

 acid) onl}", 3 mineral fertilizers plus IGO lbs. of nitrate of soda, and 3 

 mineral fertilizers plus 320 lbs. of nitrate of soda. 



Lorillard and Chemin varieties of tomatoes were grown. With nearly 

 pure sand the jdeld obtained with the smaller application of nitrate 

 was nearly .5 times as great as that obtained where minerals only were 

 emploj-ed. On the sand}^ soil the yield was nearly double, and on the 

 clay soil a little more than double as great. The increase in yield per 

 box due to the larger application of the nitrate on the different soils 

 was as follows: Nearly pure sand, 43.18 per cent; sandy soil, 58 per 

 cent, and clay soil, 19.7 per cent. These results are considered as 

 varying in ever}^ respect from the results previously obtained under 

 field conditions. 



Boxes and pots v. henches for forcing tomatoes (pp. 13, 14). — The 

 boxes used were similar to those described above. The pots were ordi- 

 nary 10-inch pots, holding approximately^ 0.3 cu. ft. of soil. Plants 



