938 EXPERIMENT STATION RECORD. 



11),<. of sulphate of ])otiisli ])er acre did not oivc as good yields as was 

 obtained from applications of 10 tons of barnyard manure. The aver- 

 age increased yield obtained with full dressings of barnyard manure, 

 as compared with half dressings and the addition of the commercial 

 fertilizers, was due largel}' to the greatly increased yields secured at 

 one station. At another station the yield from the combination was 

 larger than from the barnyard manure alone, while at 2 other stations 

 it was nearly as large. 



The influence of -water and fertilizers on the composition of the 

 ash of the potato, A. vox Daszkwski and B. Ioli.exs {.Jour. Lditdir.^ 

 JfS {lUOO). y<>. -A p2^. ^^^5-^^).— Analyses of tubers and leaves (20 

 samples) of potatoes grown with little and with much water and with 

 difi'erent kinds of fertilizers are reported and the methods used are 

 described. 



The Tucker ash apparatus (PI 8. K. , 11, p. 506) was used with excel- 

 lent results. It was shown that the water content of the soil exerts a 

 great influence upon the life of the potato plant and upon its assimila- 

 tion of plant food. With the larger amount of moisture in the soil 

 the potato plant took up a larger amount absolutely and a relatively 

 smaller amount of potash and phosphoric acid than with the smaller 

 amount of moisture, the assimilation of the potash and phosphoric acid 

 going hand in hand. Relatively more calcium and chlorin were taken 

 up in case of the larger moisture supply. The fertilizers influenced 

 both yield and composition. Nitrogenous fertilizers increased the 

 nitrogen content of both the leaves and tubers. The reduction of 

 starch content which occurred when the larger amount of water was 

 used was more largely influenced by calcium chloridthan by any other 

 substance applied. 



Culture of resistant, nonseed producing sugar beets, J. Wen- 

 DEXBUSCH {Deiit. La/idw. Fresiie, '27 {WOO), ^o. 11, pp. 107-100).— 

 Cold, wet, or otherwise unfavorable weather conditions during the 

 early stages of growth of sugar l)eets tend to further the premature 

 development of seed-bearing specimens and thus reduce the net yield 

 of normal l)eets per acre. The author has attempted to meet these 

 difficulties by growing beet seed on a cold clay upland soil where beets 

 grown from commercial seeds even in favorable years produced a high 

 percentage of premature seed beets. By careful selection of seed for 

 a number of years on this cold upland soil a strain of seed has been 

 obtained which is very resistant to cold and which, when planted 

 under more favorable soil and climatic conditions, produced crops con- 

 taining much lower percentages of premature seed beets than are 

 obtained from seeds grown under normal conditions. 



In 1899, an unfavorable season for sugar-beet culture, sugar-))eet 

 seed from ?> difl'erent seedsmen was planted in a favoi-able locality 

 alongside of beet seed grown on the cold, heavy upland soils noted 



