At the same time the harvester deposits the seed, it also deposits the micro-bots that will circulate in the plant at time it grow, whom will attack any non-flying pests. At the same time, you put other plants grow around, designed to compensate nutrients in a balanced ecosystem and at same time designed as habitat for the necessary pollinators and necessary natural predators. You only collect the crop lines, the rest you preserved with automated systems. This is why I commented should include micro-robotics.
so crazy is it? It's just an Akira Miyawaki style applied to crops plus tech.
What I was expecting is a comment in line about the harvest is a nutrient extraction process, similar to a mineral mine. Therefore, even with a balanced ecosystem, there may come a time when the compost from the harvest, or animal excrement that consumed the crop, is needed to replenish what was taken by the crop for to close the loop. In such a case, it should be applied in liquid form by injecting it underground at the same time the seed is planted, but not in the same quantities that are required today, thanks to the balanced ecosystem, which rewards also with high-quality crops.