772 EXPERIMENT STATION RECORD. 



Tlu'aiitliorcom-hitU'.s tliat, apart from the loss in nitrati's, there can be no material 

 iniprovenu'nt in niantrels when stored. The results indicate the possihility of loss 

 in siipir and di>>;estil>le proteids, without fxiviufr evidence of any actual increase in 

 he hitter constituent. Analyses made of a single root kept for 1 year show a loss of 

 87.5 per cent in sugar, 20 per cent in crude liber, and 4.5 per cent in furfuroids. 

 There was no loss in total nitrogen, but half of the digestible proteids changed to 

 nonproteids, while the indigestible ])roteids remained essentially the same. 



The continuous growth of mangels for 27 years on the same land, Barn 

 Field, Rothamsted, A. D. Hall {.Jour. Ruji. Agr. Soc. Enghmd, G3 {l:i02), jiji. 

 27-:,'j, I'kjs. 9). — This article has been noted from another source ( E. 8. R., 15, p. 465). 



The lime content of oats on limed and unlimed soil, H. G. Sodekb.xu.m (A'. 

 Lmidi. Akad. Handl. och Tidstr., 42 {1003), pp. lOS, 109; aha. in Centhl. Agr. Chem., 

 3J (1903), No. 12, p. 847). — In pot experiments previously referred to (E. 8. R., 14, 

 1). 4.'U) different jihosphates were used with and without addition of varying amounts 

 of lime, and it was found that in 8 out of 10 cases the lime content increased with 

 the increase of the application of lime. As regards ])hosphoric acid the ojiposite 

 effect was produced. 



Potato variety and manurial trials, K. J. J. Mackenzie {Jour. Southeast. Agr. 

 Vol., ll}/i", 1903, Ao. 12, pp. 34-39). — The results of cooperative tests with commercial 

 fertilizers and barnyard manure were not very successful, but it is believed that 

 small (luantities of active commercial fertilizers applied with l)arnyard manure tend 

 to increase the yield and im])rove the (juality over the use of barnyard manure alone. 

 Among 5 varieties in a test carried out in this connection Charles Fidler and Up-to- 

 Date gave the best yields. Si>raying ai)parently increased the yield per acre by 

 about 1 ton. 



[Sweet potatoes], F. G. Sly {Dept. Agr., Central Provinces [7n(i/«] RiA. 1902-3, 

 pp. 12, 13). — In this report it is stated that trials were made of 15 varieties of sweet 

 potatoes, 12 indigenous and 3 American. The American varieties proved much the 

 best, producing large crops of excellent tubers. A large number of plants of American 

 sorts have been distributed to cultivators in the provinces. 



Culture tests with rye, 1899-1902, W. Edler {Arl>. Deut. Landw. GeselL, 

 1903, No. 84, pp. 171, pis. 9). — Cooperative culture tests were conducted for 3 

 years with 9 varieties of rye. The weather conditions of the seasons are described, 

 abstracts from the reports of collaborators are given, and the results, including the 

 yields of grain and straw and the weight per 1,000 grains, are reported. Brief 

 descriptions are also given of growing plants of the different varieties in the plant 

 nursery, of developing varieties, and of their resistance to winter weather and rust 

 attacks. 



Lochow Petkus rye gave the highest average yield of grain in dry as well as in wet 

 seasons. North German Champagne rye, owing to its low water requirements, is 

 considered suitable for dry soils. On the better soils and in wet years this variety 

 gave smaller yields of grain than most of the sorts tested. Alt-Paleschken rye stood 

 first in yield of straw. The heaviest weight per 1,000 grains was in favor of Lochow 

 Petkus, while Heine Improved Zeeland showed the highest weight per liter. The 

 stooling capacity was greatest in Probstei, North German Champagne, Walkenhaus, 

 and Russian Giant Stem, and the length of straw in Alt-Paleschken, Schlanstedt, 

 Ru.ssian Giant Stem, and Walkenhaus. 



In thickness of stem, Schlanstedt, Heine Improved Zeeland, and Alt-Paleschken 

 ranked above the others. Schlanstedt and Heine Improved Zeeland appeared to 

 have the stiffest straw and North German Champagne the softest. It was found 

 that North (ierman Champagne ripened earliest, followed a little later by Pirna, 

 Probstei, Walkenhaus, and Russian (Jiant Stem, and these were again followed by 

 Lochow Petkus, Heine Improved Zeeland, and Alt-Paleschken, while Schlanstedt 



