1. Poor stress resistance: Under continuous drought or long-term high temperature and high humidity climate conditions, it is easy to have problems such as dry leaves and shortened stems, resulting in a decline in yield.
2. The quality is inferior: Songyu 438 is inferior to other corn varieties. Specific performance in the small particles, rough taste and so on, so it is not popular in the consumer market with high taste requirements.
3. Limited breeding space: The breeding space of Songyu 438 is relatively limited. If you want to further improve its yield or quality, you need to pay more efforts and time to strengthen and optimize breeding.
The above are some shortcomings of Songyu 438 corn seeds for your reference. It is recommended to consult the manual or consult a professional for more comprehensive information.