RESPONSES OF KENTUCKY BLUEGRASS TO VARIATIONS IN TEMPERATURE, LIGHT, CUTTING, AND FERTILIZING

Abstract

Cultures of Poa pratensis were grown in sand culture from vegetative segments of a single plant. Observations on growth habits at different times of the year are given. Short and frequent defoliations of plants in a vegetative condition resulted in the killing of the rhizomes and of a large proportion of the roots present when cutting was begun. Cutting back of the leaves of a non-vegetative plant was less harmful than was cutting back of the leaves of a vegetative plant. It was found possible to influence the amounts and relative proportions of various plant parts by limiting the N supply. Observations are given on the responses of vegetative and non-vegetative cultures to cutting at 60[degree]-80[degree] and 100[degree] F.