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THE RECOVERY OF FERTILIZER NITROGEN FROM VARIOUS DEPTHS BELOW SWARDS
Author(s) -
Kernick M. D.
Publication year - 1960
Publication title -
grass and forage science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.716
H-Index - 56
eISSN - 1365-2494
pISSN - 0142-5242
DOI - 10.1111/j.1365-2494.1960.tb00152.x
Subject(s) - nitrogen , agronomy , dry matter , fertilizer , nitrogen fertilizer , chemistry , environmental science , zoology , biology , organic chemistry
A microplot technique for the placement of nitrogen at depth under an established grass sward is described. The effect of nitrogen placement at various depths on the dry matter yields, root yields and nitrogen uptake of two grass species is recorded. The results for cocksfoot and red fescue indicate that there is little fall‐off in uptake of nitrogen from placement at depths down to 12 inches, and that cocksfoot also recovers substantial amounts of nitrogen from 18 inches and 2 feet. Recovery by red fescue at these depths was not investigated. Althotigh there is little difference between the two grasses in their relative ability to absorb nitrogen at the various depths, there is an indication that, weight for weight, cocksfoot roots are probably more efficient absorbers of nitrogen than those of red fescue. The significance of the findings is discussed in the light of present‐day methods of fertilizer application.