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Forms of Nitrogen and Nitrogen Availability in Fescuegrass Sod 1
Author(s) -
Giddens Joel,
Hauck R. D.,
Adams W. E.,
Dawson R. N.
Publication year - 1971
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1971.00021962006300030033x
Subject(s) - nitrogen , sorghum , chemistry , soil water , agronomy , festuca rubra , zoology , biology , organic chemistry , ecology
Organic N fractions and 15 N uptake by sudax ( Sorghum vulgare ), a sudan × sorghum hybrid, were determined in soils that had been in fescuegrass ( Festuca arundinaceae ) 0 through 5 years and in soils that had been taken out of fescuegrass 0 through 5 years. Percentages of N in the distillable acid‐soluble, nondistillable acid‐soluble (amino acid N), and nonacidsoluble fractions did not change appreciably. Total N increased with age of sod and decreased with length of time sod had been plowed into the soil. Soil N content had no significant effect on the uptake of 15 N‐labeled NH 4 Cl applied at a single N rate. The nitrogen percentage taken up by sudax from the soil, however, increased as the soil nitrogen increased.