Extension growth of grass tillers in the field

Abstract

Growth-recording instruments were used to measure extension growth of grass tillers under a variety of outdoor conditions. Variation in the rate of extension growth between tillers was fairly high, but nevertheless was found to be highly correlated with field temperature while only poorly correlated with light energy. By using these instruments, estimates of growth activity can be made rapidly and over relatively short periods of time; and it is suggested that the method may have use in assessing species for sensitivity to temperature.