That's great that you've modified the Amazone Citan to be multi-crop capable with no-till and higher capacity! It sounds like you've made some significant improvements to the functionality of the implement. However, the limitations you mentioned regarding the inability to sow poplar, potatoes, and wet rice are important to consider. Each crop has specific requirements and planting methods, so it's understandable that not all crops may be compatible with the modifications you've made.
If you're looking to expand the capabilities of the Amazone Citan further, you may want to explore additional modifications that could address the limitations you've noted. For example, you could research the unique planting requirements for poplar, potatoes, and wet rice, and then consider how you might adjust the implement to accommodate these specific crops.
Overall, it's exciting to see the customization work you've done on the Amazone Citan, and there are always opportunities for further improvement and innovation in the world of farming simulations. Keep up the good work, and feel free to share any updates or progress you make on your modifications!