How often should I apply organic fertilizer?

Image by kerolic
This rice has only 1 harvest per year, but is more resistant that the one in the lowland. It grows without any external fertilizer. Once the seeds has been harvested, the stem remains and creates the organic fertilizer for the next crop

Question by Louise: How often should I apply organic fertilizer?
I’m doing my research testing. My product is a plant growth regulator spray which is a derivative of the aloe Vera gibberellin. How often should I apply it on my variables?

Feel free to answer in the comment section below