XXXI.—Contribution to the chemistry of “Fairy Rings.”

Field experiments on concentrated organic nitrogen fertilizers

“…Thus, the small but newer additions of organic matter gave proportionally more mineral nitrogen than the large quantity of old organic matter. This greater ease of release of mineral nitrogen from root residues was reported by Lawes, Gilbert & Warington (1883) in the discussion of their work on nitrification in the Broadbalk soils.…”

Translocation in the Fungi

“…However, translocation has been studied in agarics. Lawes, Gilbert and Warrington's (1883) work and that of Shantz and Piemeisel (1917) clearly shows that the subterranean mycelium of agarics forming fairy rings can translocate water, nitrogen and potassium in its mycelium. Bonnier and Mangin (1884), Klebs (1900) and Magnus (1906-07) studied the transpiration of agaric fructifications, and found that light as well as temperature alter the rate of transpiration.…”

The influence of rainfall on the yield and botanical composition of permanent grass at Rothamsted

“….in some of the experiments conditions have been maintained which, though yielding very large amounts of produce, have done so not only at a great sacrifice of the quality of the hay but at an entirely unremunerative cost; whilst, on the other hand, in some cases very high quality has been obtained, but again at far too high a pecuniary cost. ' Lawes & Gilbert (1880, 1882, 1899, in their reports on the agricultural, botanical and chemical results of the experiments, gave an exhaustive analysis of the first 20 years' data 1856-75. Brenchley (1924), in her monograph Manuring of Grass Land for Hay, made a further examination of the results up to 1919; her object was to study the effect of the various manures on the yields and the botanical composition of sward.…”