A bug that caused missing grain stage development for a plant when using multiple plants (more than 1) after the first year of simulation is removed. Previous version of model prior October 2024 may have more than one grain development during one year. To avoid repeated grain development a necessary condition was introduced that was not correctly reset in versions of the model from October 2024. Each new sowing of a plant will allow for grain development but requires multiple sowing if more than one grain should develop from the same plant during the year of sowing. If you see problems with GrowthStageIndex for a sequence of years, when using various options to force sowing or emergence to what is intended, please report as bug.