A study was conducted to see how adding boron and sulfur affects the growth and yield of summer onions. Different amounts of boron and sulfur were tested on onion plants, and the results showed that applying 1 kg of boron per hectare and 30 kg of sulfur per hectare led to the tallest plants, biggest bulbs, heaviest bulbs, highest dry matter content, and highest bulb yield. This combination produced the best overall results compared to other amounts of boron and sulfur tested.