Premium
Soil nitrogen. VII. —correlations between measurements of nitrogen status of soils and nitroǵn % and nitroǵn content of crops
Author(s) -
Gasser J. K. R.,
Williams R. J. B.
Publication year - 1963
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740140411
Subject(s) - agronomy , dry matter , soil water , nitrogen , chemistry , dry weight , poaceae , environmental science , biology , soil science , organic chemistry
Laboratory measurements of ‘available’ soil‐N were used to try and assess its effect on dry matter, N content, and N% of ryegrass grown in pots, of barley and wheat seedlings grown in boxes and of barley grain from field crops grown on soils without fertiliser‐N. Mineral‐N in the fresh soil (Mineral‐N fresh ) and the increase when fresh or re‐wetted air‐dry soils were incubated (Δ Mineral‐N fresh or Δ Mineral‐N air‐dry ) were all significantly correlated with yields and N contents of ryegrass, barley and wheat seedlings and barley grain. These soil‐N measurements were also significantly correlated with N% in barley grain and sometimes N in ryegrass and in barley and wheat seedlings. Δ Mineral‐N air‐dry was significantly correlated most often. Soil‐N measurements were correlated better with N contents of crops than with yields of dry matter.