692 



EXPERIMENT STATION RECORD. 



1 of lime, and 2 of pomelos. A report is also giveu of tbe effect of 

 various fertilizers on Australian and Washington navel oranges, and 

 the results of analyses are shown in the following table: 



Effect of fertilizers upon the fruit of navel oranges. 



Fertilizer. 



Physical analysis. 



Aver- 

 age 

 weight. 



Barnyard mamire 



Not fertilized 



Nitrate of soda — 



Superphosphate (from boneblack) 



Muriate of potash 



Nitrogen and phosphoric acid 



Nitrogen and potash 



Potash and phosphoric acid 



Nitrogen, phosphoric acid, and 

 potash 



Grams. 

 190 

 153 

 160 

 193 

 205 

 160 

 208 

 208 



Eind. 



Per ct. 

 41.0 

 37.8 

 39.4 

 43.2 

 38.2 

 39.2 

 34.7 

 34.8 



40.9 



Pulp, 

 pressed. 



Per ct. 

 25.7 

 29.3 

 26.0 

 22.2 

 .30.0 

 25.0 

 26.2 

 27.4 



21.2 



Aver- 

 age 

 juice. 



Gc. 



Analysis of juice. 



Total 

 solids 

 (by 

 spin- 

 dle). 



Per ct. 

 13. 80 

 15.15 

 13.65 

 13.80 

 14.40 

 13.90 

 13.30 

 13.30 



15.05 



Total 

 sugai's 

 (inver- 

 sion). 



Per ct. 

 10.37 

 12.22 

 10.18 

 10.31 

 12.20 

 11.24 

 10.38 

 10.10 



11. 79 



Citric 

 acid. 



Nitro- 

 gen 

 in fresh 

 fruit. 



Perct.- 

 0.184 

 .175 

 .170 

 .171 

 .158 

 .184 

 .182 

 .185 



.183 



The author states that rigorous interpretation of the results of his 

 experiments will reveal many contradictions, and before much weight 

 can be given such analyses the ex]3eriments must be repeated on an 

 extended scale for several consecutive years. 



In regard to nitrogen, it was found that muriate of potash and nitrate 

 of soda lowered the nitrogen content of the fruit as compared with 

 unfertilized fruit. That muriate of potash apparently increases sugar 

 and decreases nitrogen seems to be about the only definite conclusion 

 that can be drawn from the experiments thus far conducted. The lack 

 of any standard for comparison is a serious drawback to this kind of 

 work. 



Fertilizer experiments with potash salts for oranges are briefly 

 reported, and it is shown that while the oranges of the different lots 

 weighed practically the same, those not treated with potash had a 

 thicker rind and a larger average of juice, and those treated with pot- 

 ash had a larger total amount of pulp. The ash of the orange was 

 about the same in the 2 lots, the percentage of potash being a little 

 higher for the trees receiving a potash fertilizer, and the phosphoric 

 acid content was about 5 per cent higher in the fruit from trees receiv- 

 ing no potash. The potash seems to have had a slight effect in increas- 

 ing the sweetness of the Juice, there being 1.3 per cent more total sugar 

 and 0.56 per cent more cane sugar for the trees receiving potash. The 

 citrif; acid was not influenced. The author states that had sulphate of 

 potash been used instead of muriate probably the effect on sugar con- 

 tent would have been greater. 



Blossoms of the plum and apricot, E. S. Goff ( Wisconsin Sta. 

 Ept. 1895., pp. 300-303). — The study of plum blossoms with reference to 

 their fertility, commenced in 1894 and noticed in the Annual Report of 

 the station for that year (E. S. R., 8, p. .309), was continued. It was 



