The use of eco-friendly organic formulations in crop production has gained considerable attention in recent years. The present study was carried out to evaluate the effect of bio-enzyme soil application on growth and photosynthetic pigments of tomato plants under different concentrations and repeated applications. Four treatments were used: control and three different concentrations of bio-enzyme solution. The first application was given to one-month-old seedlings and the second application was given to the same plants after one month. Growth parameters such as plant height, number of leaves and number of branches were recorded 15 days after each application. Chlorophyll a, chlorophyll b and carotenoids were also estimated. The results showed that bio-enzyme application significantly improved plant growth and pigment content. The 10ml/Liter application produced a cumulative effect, especially at the 10ml/Liter dilution, which recorded the highest plant height, number of leaves and number of branches. The study suggests that repeated soil application of bio-enzyme at an optimum concentration can be used as a sustainable method for improving tomato growth.
Mali et al. (Thu,) studied this question.