A study looked at how using a mix of vermicompost and phosphorus solubilizing bacteria (PSB) affected the growth of guava plants. They found that the combination of 7.5 kg vermicompost and 50 g PSB per plant led to the best results in terms of plant height, girth, number of shoots, and soil health. This treatment also increased organic carbon and nutrient content in the soil while reducing pH and electrical conductivity. Overall, using this combination helped guava plants grow better and improved the soil quality compared to other treatments.