FIELD CROPS. 461 



of wheat and malting barley for Danish farmers. The trials of the committee cover 

 a period of 20 years, and a report for the first 10 years has been previously published 

 (E. S. R., 5, p. 716; 9, p. 941).— P. w. woll. 



Roo crops adapted to culture on moor soils, II. von Feilitzen (Svenska 

 Mosskulturfdr. Tidskr., 18 (1904), No. 4, pp- 294-302). — Experiments made at Flahult 

 Experiment Station during 1897-1902 show that turnips gave the most certain and 

 the largest crops, while carrots, Swedish turnips, and especially fodder beets pro- 

 duced very small yields. Bortfelder and Early Improved turnips, and Champion, 

 White Belgian, Giant, Orange Yellow, and James carrots were the most valuable 

 varieties grown. — f. w. woll. 



Experiments with buckwheat, S. Tretyakov (Zhur. Opuitn. Agron. [Jour. Ex pi. 

 Landw.}, 5 (1904), No. 1, pp. 1-17). — Since 1895 Common Siberian and Silver Hull 

 buckwheat have been grown in comparison on the Poltava Experiment Field. In 

 1901 and 1903 the common buckwheat was grown on tilled and fallowed forest land 

 of a clay soil, and also on cultivated and fallowed chernozem. In 1902 seeds of dif- 

 ferent weight of this same variety were tested. The seeds weighed 1.362, 1.998, and 

 2.198 gm. per 100, corresponding to a mesh of 1, 2, and 4 mm., respectively. 



The average results for the years 1895 to 1902, inclusive, show that Siberian buck- 

 wheat yielded 870.6 lbs. of grain and 2,079.6 lbs. of straw, and Silver Hull buck- 

 wheat 735.5 lbs. of grain and 2,510 lbs. of straw per acre, the ratio of straw to grain 

 being 2.7 and 4.1, respectively. The author concludes that buckwheat comes up 

 quicker on chernozem soil, but that the period of growth is longer than on forest 

 clay. Owing to the higher moisture content and the greater fertility of chernozem 

 as compared with the other soil, the yields of grain and straw are heavier. On the 

 fallow of both soils the development of the crop was weaker and the yield was 

 slightly less than on the soil continuously under cultivation. Small and light but 

 plump kernels of buckwheat are richer in nitrogen and ash than plump, heavy, large 

 kernels. The results of a 1-year's test indicated that the largest yields are obtained 

 from plump small seed and the lowest from seed of medium size and weight. Sibe- 

 rian buckwheat succeeds better at Poltava on account of its shorter growing period. — 



P. FIREMAN. 



A study of correlative characters in Szekler maize, C. Fruwirth (Fuhling's 

 Landw. Ztg., 53 (1904), Nos. 6, pp. 200-208; 7, pp. 255-258) .—The weight of the 

 whole plant, ear, stalk and leaves, husks and cob, and the percentage of grain and 

 stalk based on the total weight of the plant, and of husks and cob based on the 

 weight of the ear, were determined and are recorded in tables. 



The single-eared plants produced from seed of 6 selected stalks were grouped 

 according to their maturity. Late ripening appeared correlative with a high weight 

 of the entire plant as well as with a high weight of grain, husks, cob, and ear. The 

 percentage of the cob to the ear by weight was in all cases greater in the late matur- 

 ing plants than in the early ones, but the percentage of grain was lower. A high 

 total weight of the plant is not regarded as a very definite factor in grain production. 



In selecting for improvement a high yield, coupled with a high per cent of grain, is 

 considered of first importance. A long ear usually indicated a high weight and high 

 percentage of grain and a high weight of kernel, but the percentage of cob and husks 

 was 'also high, and these qualities are regarded as unfavorable. A heavy develop- 

 ment of the husks retards ripening in the regions where the variety is grown. A 

 large number of internodes was apparently connected with a high weight of grain 

 per plant, a low weight of kernel, a low percentage of grain, and a high percentage of 

 cob, and was indicative of a high production of stover. A thick stalk, being asso- 

 ciated with a low percentage of grain and a high percentage of cob, did not seem to 

 be a favorable factor. 



Manuring of cotton, G. P. Foaden (Jour. Khediv. Agr. Soc. and School Agr., 6 

 (1904) , No. 1, pp. 1-6) . — This article discusses the manuring of cotton, and incident- 

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