FIELD CBOPS. 963 



[Field crop work], E. Cliftoh h u . [New Zeal Dept.Agr.,Ann.Rpt., 18 (1905), 

 pp. 228-277, ph. 9). Among other work of the Ne\* Zealand experiment stations 

 culture tests with various field crops are reported. A.tthe Waerenga station Connect- 

 icul tobacco under shade grew very luxuriantly, the leaves produced being in some 

 instances 1 ft. 10 in. across, well ripened, and of fine texture. 



At the Momobaki Station over lo<» varieties of jM.tat.M- vvere grown in small plats. 

 The leading variety the last year of the experiments was Northern star, which 

 yielded ovei 20 tons per acre, while Imprest Queen ranked first in the average yields 

 for 3 years with more than 19 tons peracre. The boxing of Beed potatoes to facili- 

 tate planting in backward Beasons is described. 



The results of fertilizer experiments with Crimson King Bwede, in which the fer- 

 tilizers applied represented equal money value, wen- in favor of 3\ cwt. of guano per 

 acre, which produced a yield at the rate of 31 tons 3 cwt. Of the smaller applica- 

 tions tested, _■' cwt. of Bteamed bone dusl per acre gave the besl average yields, the 

 results for 9 years showing an average of 28 tons per acre. Notes are also given on 

 the culture of fodder beets and of forage crops. 



Annual report on the experimental farms in the Bombay Presidency, 1905 

 (Ann. Rpt. Expt. Farms Bombay, 1905, pp. 106). -Brief reports are given on the 

 work of twelve experimental fauns ami of the botanical gardens. The experimental 

 work comprised in general culture, variety, and fertilizer tests with millet, Bombay 

 hemp, rice, wheat, cotton, potatoes, and various forage crops, including a number 

 ot leguminous plants. A tabular statement showing the field records of a number of 

 hybrid cottons is given. 



Department of cooperative experiments, L. II. Goddard and M. I >. Bugby 

 ( Ohio Sla. < ire. /7 . pp. /" ). — The history of cooperative experiments in ( >hio is given 

 and a list including the experiments now receiving special attention is presented. 

 The manner in which the work is handled with each individual experimenter is 

 described. 



Partial statement of tests offered for 1906 | Ohio «S£a. Circ. 45, pp. 8). 



Proposed constitution and by-laws of the Ohio Plant Breeders 1 Association 

 | Ohio Sta. Circ. 16, pp. 8). 



An example of model farming-. W.J. Spillman I U.S. Dept. Agr., Farmers' Jl"L 

 242, pp. 16, figs. 5). — The subject-matter of this bulletin has been noted from another 

 source (E. S. R., 16, p. 210). 



The possibility of diminishing errors in field trials caused by unevenness 

 of soil, (i. Holtsmahk and B. R. Larsen i Txdsskr. Landbr. Planteavl, i ; \ 1905), pp. 

 880-851).— In the plan worked <>ut by the author with this purpose in view the field 

 is divided into squares for comparative trials with different varieties, fertilizers, etc 



Every third square is used as a control plat, and in calculating the results the aver- 

 age of the yields on the 3 control plats lying nearest a trial plat is taken into consid- 

 eration and the difference between this average and the yield of the trial plat deter- 

 mined. This difference is calculated for each trial plat, and the average for all tin- 

 control plats in the field is also found. The calculated difference for each trial plat 

 is finally added to or subtracted fmni the average < if the control plats, according to 

 whether the difference was positive or negative. The error of the yields obtained 

 for the different plats is represented by the difference between the calculated yields 

 and the average of the actual yields for all trial and control plats, -f. w. woll. 



Experiments in electroculture, R. Lowenherz (Ztschr. Pflamenkrank., 1~>{1905), 

 Nos. 8, pp. 187-151, figs. 8; .',. pp. 205-295).— The work on electroculture by different 

 investigators is reviewed, and the results obtained by the author are reported. 



It is concluded that for the purpose of studying the influence of electricity on the 

 growth of plants it is better to make tew, but very accurate experiment-, than to 

 make numerous tests with different plants. In tests made by the author it was 



