The study looked at how a plant growth regulator called 'Cultar' affected the fruiting of guava plants. They sprayed 'Cultar' on the plants at different spacings and found that the treated plants had more flowers, fruits, and higher fruit yield compared to untreated plants. Plants sprayed with 'Cultar' at a lower concentration of 500 ppm showed better fruiting behavior overall. Additionally, plants spaced further apart had more flowers, fruit set, and higher fruit yield than plants spaced closer together.