On the Growth of St. Augustine Grass under the Low Light Conditions

Abstract

An experimental was made on the growth and change in shape of St. Augustine grass (Stenataphrum secundatim Kuntze.) under low light conditions.
Under the lighting conditions of 5, 15, and 35μmol m^-2·S^-1, the Leaf Area Index (LAI) value increased along with the trandition of the new leaf development period. Espcially, under the lighting condition of 35μmol m^-2·S^-1, it was clear that Leaf Area Ratio (LAR) value reached the maximum value, and affected the Ralative Growth Rate (RGR) value. The single leaf thickness and blade length increased along with the LAR value.
Under the lighting condition of 260μmol m^-2·S^-1, however, the LAI value did not increase significantly due to the increase in the number of withered leaves.