342 EXPERIMENT STATIOISr RECORD. 



Soil inoculation experiments with lupines, C. Schreiber {Rcr. Gen. Agron. 

 [Louvain'], 9 {1900), No. 7, jyp. 302-304). — The inoculation of a field at the rate of 

 6,000 kg. per hectare with soil taken from land producing good lupines increased the 

 yield of green plants, including roots, by 22,500 kg. per hectare as compared with 

 soil not inoculated. 



Autumn catch, crops, P. P. Deherain {Bid. Soc. Nat. Agr. Frcmce, 60 {1900), No. 

 12, ]>p. 749-751). — A discussion on the use of white lupines in this connection. 



Tillage experiments with potatoes, J. L. Stone {New York Cornell Sta. Bid. 

 191, ])p. 167-18S, fig. 1). — This bulletin summarizes the rei:iorts from farmers who 

 cooperated with the station in cultural experiments with potatoes in 1899 and 1900. 

 The cultural methods recommended by the station were early or twice plowing, 

 thorough fitting, deep planting, prolonged, frequent, level tillage, and spraying with 

 Bordeaux mixture and Paris green. Eighty-five per cent of the reports received 

 from the farmers who gave these methods a trial indicate profitable returns. The 

 results of similar experiments conducted at the station from 1895 to 1899, inclusive, 

 published in former bulletins and previously noted, are reported and briefly 

 discussed. 



The work with potatoes during the summer of 1899, H. L. Bolley {North 

 Dakota Sta. Upt. 1900, pp. 39-43). — From 4 varieties of potatoes — Sunlit Star, Dakota 

 Seedling, Trumbull, and Early Ohio — the largest and best, nearly round and typical 

 long shaped tubers were selected from the bin and planted. The results obtained 

 confirmed the previous conclusions (E. S. R., 9, p. 942) that for form and quality of 

 tuber the selection must be made in the field from the vine. It was found better, 

 however, to select from the bin the shape desired than to make no selection at all. 

 A comparison of the stem and seed ends of the tubers for seed was only slightly in 

 favor of the seed end. Several experiments to determine the possil)ility of root fusion 

 are reported, but the results in all cases were negative. 



Field experiments with fertilizers on potatoes, 1894 to 1900 ( Ohio Sta. Bui. 

 125, pp. 121-132, dgms. 2). — The experiments here considered have been partially 

 reported in a former bulletin (E. S. R., 12, p. 127). They were made at the central 

 station at AVooster and at the substations at Strongsville and Neapolis. The rotation 

 in connection with this experiment was potatoes, wheat, and clover. Superphos- 

 phate, muriate of jjotash, nitrate of soda, and dried blood were applied at different 

 rates, alone, and in different combinations. It is concluded that, after making allow- 

 ance for irregularities in yields, phosphoric acid is the constituent most needed for 

 potatoes and cereals by the soils at Wooster and Strongsville, while on the thin, 

 sandy soil at Neapolis potash is relatively more effective than phosi^horic acid. All 

 tests showed a much greater increase from the use of the combined fertilizer than 

 from any single constituent alone. It is considered that in a general way the results 

 indicate that acid phosj^hate in moderate quantities can be profitably used in potato 

 growing and that it is also advantageously combined with small quantities of potash 

 and nitrogen fertilizers. In a short rotation like the one used in these experiments, 

 and on soils which produce good crops of clover, the economy of using nitrogen fer- 

 tilizers on potatoes is questioned. The results also show that it is the soil rather 

 than the crop which determines the fertilizer required. 



Report on variety tests w^ith potatoes, F. \X. Rane {New Hampshire Sta. Bid. 

 79, pp. 10-15). — The results of varieties of potatoes tested in 1900 are tabulated and 

 each variety is briefly described. 



Serradella in Campinas, G. d'Utra {Bol. Agr. Sao Paulo, 1. ser., 1900, No. 7, 

 pp. 474-47S) . — A brief description of the culture tests with serradella and a rej)ort on 

 analyses of the plant at different periods of growth. 



Experimental work with sugar beets during 1900, R. H. Forbes {Arizona 

 Sta. Bui. 36, pp. 187-205, maps 2). — This bulletin is a report on cooperative culture 

 experiments with sugar beets under the direction of the station. Each test is dis- 



