23(5 p]xrEKiMp:NT station record. 



Thi> effects of iiotafjli hunger which are es])ecially cliaiacterislic liavebeen deHcribed 

 elsewliere in the Record (K. S. E., 13, p. 1030). 



The effects produced by plant food deliciencies are very similar in many cases to 

 those ])rodnced ))y insects or fnngus diseases or ))y injurious gases. 



A process for making available phosphates, ('. 11. Dempwoi.k, Jr. {.hmr. Amcr. 

 Chciii. Snc.^ .;.', (jf)(),^), Xo. ,v, jip. SlS-cS'Jo). — An account is given of experiments 

 undertaken with a vi(M\ to utilizing niter cake, a by-product of the manufacture of 

 sulplnn-ic acid, in tlie i)roductiou of available phosjihate from bone a.«h and rock, 

 phosphate. By heating the phosphate with niter cake and charcoal, as high as 73 

 per cent of the phosphoric acid was rendered available. By treating groimd rock 

 phosi)hate with niter cake in solution and allowing to stand for 4 weeks, al)out 55 

 per cent of the phosphoric acid was rendered soluble in water. The latter method 

 is considered the more practical from a business standpoint. 



Frost and potash fertilizers, A. Couturier {Jour. Agr. Prat., n. ser., 6 {190,3), 

 No. 30, pp. lis, 119). — Various observations are reported to show that crops fertil- 

 ize<l with ])otash fertilizers are more resistant to frost than those not so treated. 



Analyses of fertilizing- substances sent on for free examination, C. A. 

 GoEssMANN {Massachusetts Sta. Bui. 89, pp. 3-8, 12-15). — Analyses are reported of 

 miscellaneous materials, including wood ashes, ground fish bone, tankage, dissolved 

 bonel)lack, acid phosphate, complete fertilizers, high grade sulphate of potash, 

 nitrate of soda, cotton-seed meal, acetylene gas tank refuse, cocoanut fiber jiith, sew- 

 age, and soils. Notes are also given on the valuation of fertilizers, and on taking 

 samples for analysis. 



Tabulated analyses of commercial fertilizers, J. Hamilton and W. Frear 

 {Pennsylvania State Dept. Agr. Bui. 109, pp>. 208). — Analyses and valuations of 450 

 samples of fertilizers examined during the year ended December 31, 1902, are 

 reported and discussed. 



Fertilizers, R. E. Rose and E. E. McLin {Florida Dejjt. Agr. Mo. BuL, 13 {1903), 

 No. S3, pp. 17-35). — Notes on -s'aluation and tabulated analyses. 



FIELD CROPS. 



Review of the work of the Northeast Experiment Farm since its organiza- 

 tion in May, 1896, H. H. Chapman {Minnesota Sta. Bui. 81, pp. 181-234, J>1. 1, 

 figs. 7) . — A brief description is given of the equipment and improvements of this 

 experiment farm, located at Grand Rapids, which is a branch of the Minnesota Sta- 

 tion; and the results obtained since its establishment are reported and discussed in 

 detail. Directions for the culture of the different crops here dealt with are also 

 given. 



In a 6-year test of 7 varieties of oats. Improved Ligowo led in jiroductiveness with 

 a yield of 49.8 bu. per acre, followed, in the order given, by Lincoln, Early Goth- 

 land, Early Swe<lish, AVhite Russian, Archangel, and White Wonder. The average 

 yield of all varieties was over 44 bu. per acre. The yields for 1901 and 1902 of 20 

 new varieties are also shown in comparison with the yields of 9 of the best old kinds. 

 Many of the new varieties were introduced by this Department, and are showing 

 superior quality and productiveness. The results with different methods of soil 

 preparation for oats were in favor of fall plowing. In one experiment the seed of 

 the same variety grown continuously at the farm was comi)ared every year with 

 seed of the same variety grown at the State experiment station. During the 4 years 

 this test has been in progress the seed from the experiment station has outyielded 

 the home-grown seed by an average of 7.9 bu. per acre. 



Eleven varieties of wheat grown for 5 years have given an average yield of 17.4 bu. 

 l^er acre. In 1902, 4 varieties of macaroni wheat gave an average yield of 15.4 bu. 

 per acre, as compared with 22.3 bu. for the ordinary wheats. The blue stem wheats 



