The influence of time of tiller origin and nitrogen level on the floral initiation and ear emergence of four pasture grasses

摘要

A study was undertaken for perennial ryegrass, Italian ryegrass, cocksfoot, and timothy, of the floral initiation, ear emergence, leaf number at ear emergence, and percentage of fertile tillers with dates of origin between May 1958 and February 1959. The influence of two levels of nitrogen was examined.