Based on the findings from your experiment on the impact of different levels of potash on the growth and yield of sesame, it is evident that potassium plays a significant role in enhancing the crop's performance. The application of higher levels of potash, particularly in the form of SOP, resulted in notable improvements in various growth parameters such as plant height, number of branches, and number of capsules.
Among the treatments, the application of K₂O at 150 kg/ha as SOP through soil and fertigation (T8) proved to be the most effective, consistently providing the highest values for plant height, number of branches, capsules, and seed weight per plant. This suggests that the higher potassium availability from SOP significantly boosted plant growth, capsule formation, and seed development. Additionally, the increased potash levels positively influenced seed quality, as indicated by the higher test weight observed in T8.
In terms of yield and productivity, treatments with 150 kg/ha K₂O as MOP (T5) also showed strong results, with significant improvements across the observed parameters compared to the control. However, the SOP treatments demonstrated slightly superior performance in terms of both growth and yield.
Economically, while both SOP and MOP at higher levels provided substantial yield benefits, the use of SOP appeared to offer an edge in terms of overall productivity and plant health. The results of your research clearly demonstrate that the strategic application of potash, especially through SOP, can significantly enhance the growth, yield, and quality of sesame, making it a viable practice for optimising sesame production.
