hii
Since you have already sown the seeds, i presume that you have added s suuficient quantity of FYM to the land, bcoz in organic farming you are not supposed to use any chemical fertilizers. Initial application of FYM is very important aspevct..
Sesame is a short day plant. In order to achieve crop density the branching varieties must be singled. Follow crop rotation. Use a lot of compost for manuring. Phosphorus can be supplemented by rock phosphate or bone meal. Organic foliar spraying can provide a large amount of nutrition. Spray animal liquid manure, plant extracts, cattle manure dissolved.
Use bological methods of plant protection. Regularly spray neem extarcts.
Other cultivation aspects are the same. THese are some of the procedures that are followed in organic farming.
Regards
Ashwini