558 EXPERIMENT STATION RECORD. 



beets was increased and the quality of cereals improved are discussed and t h< ■ ana- 

 lytical data given in tables. 



Experiments with agricultural plants, A. Mitscherlich i Landw. Jahrb., 82 

 I 1908), No. 5-6 pp. 773-818). — The author discusses the subjecl from a theoretical 

 and practical standpoint. The theoretical points discussed arc the unreliability of 

 one-year experiments, the correction of the results by applying the factor <>f the 

 probability of error and the methods of its application; and the practical points are 

 the choice of the experiment held, the planning and execution of the experiments, 

 and the yields of the season. By way of illustration the proposed methods are 

 applied to the results of a number of experiments. 



Press drilling as a protection for winter grains, Falke ( Devi. Landw. Presse, 

 SI (1904), No. 70, j>. 601). — A comparison between sowing winter wheat with the 

 ordinary drill and the press drill is reported. Ordinary drilling yielded 2,025 kg. of 

 grain, 3,153 kg. of straw, and 475 kg. of chaff per hectare as compared with 3,342 kg. 

 of grain, 5,236 kg. of straw, and 728 kg. of chaff for the press-drilled plat. The num- 

 1 icr of plants and stems per meter of row, as well as the stooling capacity of the plants 

 and the weight of the grain, and its content of nitrogen and ash, were also in favor 

 of press drilling. 



Field trials in 1903 {Jour. Southeast. Agr. Col., Wye, 1904, No. 18, pp. 87-42).— In 

 several experiments with varieties of potatoes Evergood led in yield, with 9.7 tons per 

 acre, being followed by Goodfellow with 8.4 tons. Charles Fidler, Schultz Lupitz, 

 and Royal Kidney gave each an average yield of 6 tons per acre. 



Four varieties of corn were drilled 3J in. deep in rows 18 in. apart on May 20 

 Three bu. of seed were used per acre. The yield of fodder per acre ranged from 16.5 

 tons to 25.5 tons. In addition to planting local commercial seed, Giant Caragua, 

 Thoroughbred White Flint, and Wisconsin White Dent were grown. Wisconsin 

 White Dent reached the greatest degree of maturity. 



A number of Globe and Tankard varieties of mangels were grown from pedigreed 

 and cheap seed. The high grade seed produced roots of good shape, uniform in size, 

 and with small tops, while the low grade seed gave badly shaped roots with large 

 tops. The average yield of 9 Globe varieties was 37 tons per acre, and that of 4 

 Tankard varieties, 30 tons. 



Report of committee on coast experiments, J. 'S. Newman (South Carolina 

 Sta. Bui. 91, pp. 22). — This bulletin is a report of progress in experiments conducted 

 at the experiment station at Hampton Park near Charleston. The crops under test 

 are cotton, rice, teosinte, beggar weed, soy bean, Kafir corn, broom corn, peanuts, 

 flax, tobacco, oats, and a number of other forage crops, together with asparagus, canta- 

 loupes, and cucumbers. A fertilizer experiment with cotton on James Island, in 

 which the nitrogen, potash, and phosphoric acid were applied in different combina- 

 tions at the rate of 16, 30, and 42 lbs., respectively, showed that phosphoric acid 

 was the most effective element on this soil. 



Manurial experiments (Jour. Southeast. Agr. Col., Wye, 1904, No. 18, pp. 108- 

 110). — Tests with barnyard manure and commercial fertilizers for hops have been in 

 progress for 7 years. At the beginning of a 3-year rotation one plat received 30 

 loads of barnyard manure for the entire period, while a second plat receive.! 10 loads 

 each year. A third plat was annually given commercial fertilizers. In 1903 the 

 plat receiving all the barnyard manure in one dressing yielded nearly halfacwt. 

 more per acre than the plat receiving 10 loads each year, and the yields of both of 

 these plats were considerably in advance of the yield obtained with commercial fer- 

 tilizers alone. 



The results of a fifth season in another experiment on the requirements of the hop 

 plant as regards minerals, showed that the plants receiving potash gave the largest 

 yields, and that neither a reduction of the application of basic slag from 10 and 15 

 cwt. to 5 cwt. per acre, nor the use of 10 cwt. of gypsum had any effect upon the 



