Comparative Value of Legumes as Green Manures (Classic Reprint) (Inglés) Pasta dura

Excerpt from Comparative Value of Legumes as Green Manures In experiments conducted by the chemical department of this station, 32 varieties of legumes were grown on two soils of different types. One soil was a dark brown clay from the station grounds, the other, an acid red clay from the Kunia district of the Island of Oahu. Three crops were grown of each of the 82 varieties of legumes, using 4 pots for each trial of each variety. At maturity, the plants were removed, weighed, and analyzed for nitrogen. Analyses of the soil for nitrogen were made before planting and after, removing the crop. These analyses indicate that a large portion, at least, of the nitrogen in the legumes was Obtained from the air through the associated root tubercle bacteria. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.