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THE EFFECT OF LEVEL OF NITROGEN AND CUTTING TREATMENT ON LEAF AREA IN SWARDS OF S48 TIMOTHY ( PHLEUM PRATENSE , L.) AND S215 MEADOW FESCUE ( FESTUCA PRATENSIS , L.)
Author(s) -
Lambert D. A.
Publication year - 1964
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.1365-2494.1964.tb01193.x
Subject(s) - specific leaf area , phleum , leaf area index , dry matter , biology , poa pratensis , agronomy , festuca pratensis , nitrogen , yield (engineering) , botany , chemistry , poaceae , photosynthesis , lolium perenne , organic chemistry , materials science , metallurgy
Leaf‐area index was increased by nitrogen application, but the increase was restricted by frequent cutting, which limited the incidence of high leaf‐area indices. Timothy swards had higher leaf‐area indices than meadow‐fescue swards between April and mid‐July, the period in which maximum values were recorded. N significantly increased the leaf area per g of leaf (leaf‐area/leaf‐weight ratio) at the beginning of the experiment, but not thereafter; the effect of cutting on this ratio varied with the date of cutting. Leaf areas per g of leaf were similar for the 2 species at the beginning and end of the experiment, but in mid‐summer values for timothy increased whilst those for meadow fescue decreased. The relationship between leaf‐area index and yield of dry matter is discussed.