936 EXPERIMENT STATION RECORD. 



334 were complete fertilizers in which the total nitrogen varied from 0.36 to 8.1 per 

 cent, averaging 2.01 per cent. The water-soluble nitrogen varied from to 6.4 per 

 cent, averaging 0.87 per cent. The available phosphoric acid varied from 1.01 to 

 13.46 per cent, averaging 8.8 per cent. The potash varied from 0.26 to 11.59 per 

 cent, averaging 4.47 per cent. In 70 out of the 334 brands examined the potash was 

 in the form of sulphate free from excess of chlorids. The average amounts of nitro- 

 gen, available phosphoric acid, and potash exceeded the guaranteed averages by 

 0.12 per cent, 1.13 per cent, and 0.34 per cent respectively. The average retail sell- 

 ing price of the fertilizers was $25.71, the retail cost of the separate ingredients 

 unmixed, $19.81. 



Official report on commercial fertilizers inspected, analyzed, and licensed 

 to be sold in the State of Ohio during- 1901 ( Ohio State Bd. Agr. Rpt. 1901, pp. 92). 



The fertilizing- value of citrus culls, E. W. Hilgard ( California Sta. Bid. 139, 

 pp. 11, 12). — It is estimated that 1,000 lbs. of oranges contain about 2.11 lbs. of pot- 

 ash, 1.25 lbs. of phosphoric acid, and 1.83 lbs. of nitrogen, worth from 30 to 40 cts. 

 It is suggested that the culls may be composted with spent lime from beet-sugar fac- 

 tories with good results. 



Compost formulas {Bid. Xorth Carolina State Bd. Agr., 23 {1902), No. 1, pp. 

 43-45). — Formulas for composts of chemical fertilizers with barnyard manure, cotton 

 seed, and cotton-seed meal are given, as well as precautions regarding the use of lime 

 in composts. 



Planting, fertilizing, and yield tables, Vibrans {Deut. Landw. Presse, 29 

 {1902), No. 4, p- 26). 



FIELD CROPS. 



Influence of the right amount and the right distribution of -water in crop 

 production, F. H. King {Wkconmi Sta. Rpt. 1901, pp. 195-199). — The distribution 

 of rainfall at the station during the growing seasons of 1900 and 1901 are compared, 

 and the yields of different crops under irrigation are reported. The yield of hay on 

 4.2 acres obtained in 4 cuttings was 20.59 tons, representing a gain of 3.4 tons due to 

 irrigation. The increase in the yield of corn by supplementing tlie rainfall by irri- 

 gation amounted to 4.2 tons of silage, 1.09 tons of dry matter, and 35.16 bu. of ear 

 corn per acre. In a test with potatoes, holding the soil moisture up to standard con- 

 ditions by irrigation increased the yield of merchantable tubers 159.58 bu. per acre. 

 The feasibility of establishing irrigation plants under certain conditions is discussed. 



Field experiments -with fertilizers, C. S. Phelps {ConnectiaU Slorrs Sta. Rpt. 

 1900, pp. 34-60, dgms. 2). — Some of these experiments have been in progress since 

 1888, while others have been added at different times. The work is repeated yearly 

 with the same fertilizers on the same plats. The reports of former years, together 

 with a description of the experiments, have been pre\'iously noted. This account is 

 a report of progress for 1900. The results in general are the same as those reported 

 in 1899 (E. S. R., 12, p. 1028). 



Fertilizer experiments, J. Sebelien {Norsk Landman dshlad, 20 {1901), Nos. 12, 

 pp. 144-146; 13, i>p. 158-161; 14, pp. 169-172). — The work here reported consisted of 

 fertilizer experiments with garden crops, and of pot experiments with barley. The 

 plats used in the experiments with garden crops contained 37.5 square meters, and 

 were fertilized at the rate of 1,216 kg. of kainit and 1,654 kg. of 20 per cent super- 

 phosphate per hectare in one series, and 1,333 kg. of kainit and 1,813 kg. of phos- 

 phoric acid in the form of potassium phosphate in the second series. Two plats 

 were left unfertilized. The plats planted to peas had received stable manure 3 years 

 previous, and those i>lanted to carrots 2 years previous. Regarding the results of the 

 check plats as 100, the average relative yield of peas on the kainit plats was 56 for 

 the vines and 37 for the peas, and on the potassium phosphate plats 185 for the vines 



