Nevertheless, wholecrop rye silage pays off due to lower production costs. A slightly lower wholecrop rye silage methane yield compared to forage maize only has to be assumed if the crop is harvested too late and therefore has already been lignified. From an agronomical point of view, an early wholecrop hybrid rye harvest date is advisable, especially in regard to the subsequent crop. At the beginning of June there is still a wide range of subsequent crops possible. A later harvest date clearly limits the options.