A dynamic Model of Crop Growth Rate of Italian Ryegrass after Cutting

Italian ryegrass can produce plenty of
annual biomass in Arctic conditions.

Summary: The height and yield of Italian ryegrass was studied in North Finnish conditions. A dynamic model for the Crop Growth Rate was constructed in two stages: (a) model for the daily height increment and (b) regression model between height and yield. The explaining variables for the daily height increment were the growth rhythm and the theoretical daily dark respiration. The effect of temperature and incoming radiation on the Crop Growth Rate was discussed.