354 EXPERIMKNT STATION RP^OORD. 



A comparative study of different colored glass for greenhouses, E. Z\ch- 

 AREWicz {Jour. Soc. Xdt. Ilort. France, 4- «er., 3 {1902), Apr., 2>p. 265-268). — A brief 

 review is given of earlier experiments by different workers along this line, and the 

 author presents the results of his own work along the same line with strawberries. 

 In this work the largest and greenest plants were obtained when yellow glass was 

 used, but the quantity, size, and earliness of the fruit was decreased by the use of 

 yellow-colored glass. The largest and earliest fruits were obtained by using color- 

 less glass. The largest number of fruits was obtained when violet-colored glass was 

 used. With this glass the size of the fruit was decreased, the quality injured, and 

 the earliness retarded. Red, blue, and green glasses were all injurious to the vege- 

 tation of the plants. From these results the author concludes that in greenhouse 

 work where foliage is desired, yellow glass may be used; but for the fruit the ordi- 

 nary colorless glass is Ijest. 



Forcing tomatoes at the Iowa Experiment Station, H. C. Price {Amer. Gard., 

 23 {1902), No. 394, l)-449, fig. 1). — The i-esults are given of a test of varieties of toma- 

 toes for forcing in the greenhouse. The plants were set 15 in. apart and trained to a 

 single stem on a trellis of wire. Lorillard and Holmes Supreme were the earliest 

 varieties grown; Frogmore Selected furnished the most uniformly size<l fruit; May- 

 flower, the largest number of large fruits; Holmes Supreme, the greatest amount of 

 small unmarketable fruit, and IMayflower the most solid fruit. Frogmore Selected 

 was the strongest grower of all the varieties tested, and Holmes Supreme the poorest 

 grower. Frogmore Selected and Sutton Best of All gave the largest cash returns per 

 plant. All things considered, it is stated that Frogmore Selected was the most satis- 

 factory variety tested. The average cash returns with this variety was $2.53 per 

 plant, while with Sutton Best of All it was $2.06. 



Vegetables for a farmer's garden in northern Illinois, J. W. Lloyd {Illinois 

 Sta. Circ. 45, pp. 6). — This gives an assortment of vegetables best suited for farmers' 

 gardens in northern Illinois, indicates how they should be planted, and time of year 

 when each will l)e available for table use. 



Manuring fruit trees, J. P. Wagner {Monatsher. Gesell. Forder.Wiss., AcJcerh. n 

 Kunste, Unter-Elsass, 36 {1902), No. 5, pp. 145-172, figs. 6). — A discussion of the prin- 

 ciples of manuring fruit trees, with some illustrations and data showing the effect of 

 fertilizing a few orchard fruits. The effect of different fertilizing elements on the 

 growth of trees and production of fruits is brought out, and formulas given for the 

 application of commercial fertilizers. As showing the advantages of fertilizing fruit 

 trees, an instance is cited in which 6 pear trees that bore an excessive crop of fruit 

 in 1900 were subjected to a fertilizer experiment. Four of the trees were well 

 cleaned, pruned in the fall, and the ground under the trees well spaded. . Each of 

 these trees then received 5 kg. of slag, and 5 kg. of kainit. During the winter fol- 

 lowing each tree received 15 to 16 litres of night soil additional, and in the spring 

 i kg. of nitrate of soda. The 2 control trees received neither fertilizers nor other 

 care. The manured trees fruited heavier, the fruits were rpore perfect, hung on 

 better, and the foliage more luxuriant than on the trees not manured. Less fruit 

 set on the unmanured trees, the foliage was ravaged by pests, and most of the fruit 

 fell off before the middle of September. At a cost of a little more than |1 the fertil- 

 ized trees gave an increase of 125 kg. of apples, having a value of about $7.50. 



Observations on the fertilization of peach orchards, E. H. Jenkins ( Connecticut 

 State Sta. Ept. 1901, pt. 4, pp. 283-285).— Tha season's record of 1901 is given of the 

 number of baskets of fruit obtained, and the number of trees that have died, in the 

 station peach orchard, which is being used to test the value of different combinations 

 and amounts of commercial fertilizers for this fruit. The experiment began in 1896, 

 and the records obtained have been published from time to time (E. S. R., 13, p. 138), 

 but, as in the present case, without drawing conclusions. The following table gives 



