30 EXPERIMENT STATION EECOKD, [Vol.35 



there should be in the cropping system about 36 per cent of the crop area in 

 intertilled crops, about 36 per cent in perennial grass, and the remaining 18 per 

 cent in annual crops not intertilled. 



Contributions to agronomic terminology, I, C. R. Ball and 0. V. Pipeb 

 (Jour. Amcr. Soc. A(jron., 8 {1916), No. 1, pp. 1-9).— A paper discussing the need 

 and value of a clear and definite terminology in agronomy, and presenting and 

 defining 35 terms relating to the operation of seeding and setting and 88 terras 

 relating to the meadow and pasture industry. 



Progressive agriculture, H. W. Campbell (Lincoln, Nehr.: Aiitlior, 1916, pp. 

 155, figs. 49). —A- popular treatise on the culture of different crops and the 

 methods of soil management in the semi-arid regions of the United States. 



Experiments with field crops, C. D. Woods {Maine Sta. Bnl. 246 {1916), pp. 

 27, 28). — In these experiments three uniform J-acre plats were differently pre- 

 pared in September, 1912. One plat was plowed and then subsoiled, the second 

 or middle plat was prepared by boring holes 80 to 36 in. deep a rod apart and 

 discharging i-lb. stick of dynamite in each hole, while the third plat was plowed 

 in the usual way. In 1913, the entire field was planted to potatoes, in 1914 to 

 corn, and in 1915 to rape, the preparation being uniform over the three plats. 

 There were no appreciable differences in the crop on the different plats, and 

 this result is taken as indicating that under the soil conditions at Highmoor 

 Farm no advantage results from the use of dynamite for loosening soil for 

 field crops. 



[The Woburn field experiments, 1914], J. A. Voelckeb {Jour. Roy. Agr. 

 Soc. England, 75 {1914), pp- 286-206). — These experiments are a continuation 

 of work previously noted (E. S. R., 27, p. 831). The year 1914 was the thirty- 

 eighth of the continuous growing of wheat and barley on the same land with 

 the annual or biennial application of different kinds, amounts, and combinations 

 of fertilizers for the difi'erent plats. The season was marked by verj' dry 

 weather from March to harvest time. The jnelds of wheat were much below 

 the average, those of barley were better, and those of oats were poor. 



In the wheat experiment the highest yield, 19.1 bu. per acre, was seciired on 

 the plat receiving 3 cwt. of superphosphate, I cwt. of sulphate of potash, and 

 25 lbs. of ammonia in the form of the sulphate. The plat receiving 100 lbs. of 

 ammonia in barnyard manure ranked next with a yield of 11.5 bu., and the one 

 receiving 25 lbs. of ammonia in rape dust stood third with 11.2 h\\. per acre. 

 In general the results seemed to indicate that the nitrate of soda plats are 

 failing as a rule and that the land on which this work is conducted is more in 

 need of phosphates than of potash. The barnyard manure plat stood first in 

 the yield of straw with 15 cwt. and 8 lbs. per acre. The results of a variety 

 tost were decidedly in favor of Square Head Master as compared with Svalof 

 and Tystofte, Swedish and Danish wheats, respectively. The use of 4 tons of 

 magnesia per acre apparently gave an increase in the nitrogen content of the 

 wlieat but had no influence on the baking quality. 



In the barley experiments the barnyard manure plat gave the largest yield, 

 24.6 l)u. per acre, being followed by the plat receiving 3 cwt. of superphosphate 

 and 25 lbs. of ammonia as nitrate of soda per acre with 24.5 bu. The plat 

 receiving 3 cwt. of superphosphate, I cwt. of sulphate of potash, and 25 lbs. of 

 ammonia in the form of sulphate per acre, 2 tons of lime having been applied 

 in 1897 and repeated in 1912, ranked third with a yield of 24.3 bu. Sulphate 

 of ammonia used alone or with minerals but without lime gave no crop in any 

 case. A test of varieties showed Tystofte Prentice and Archer about equal in 

 yield and both ranking higlior than Svah'lf I'rimus. In quality of grain Tystofte 

 Prentice stood a little higher than Archer. 



