Microorganisms are the profound group of organisms found in the soil to facilitate nutrient transfer from soil pool to the plants. The organic fertilizers are rich source of carbon for the multiplication of microbes in the soil. The experiments were carried at Shri Gavisiddeshwar Arts, Science and commerce College Koppal. The present study was undertaken to assess the effect of organic fertilizers like city compost, vermicompost and Trichoderma chlorophyll content of Lagenariasiceraria (Molina) Standl.It was observed that, the plants treated with organic fertilizers and Trichoderma have shown increased chlorophyll content compared to control plants.It was notice during the experiment that, the plants treated with 9.8 gm of city compost, 8.0 gm of vermicompost and 10.5 gm of Trichoderma, the chlorophyll a, chlorophyll b and total chlorophyll concentration in young leaves were 12.57mg/ml, 9.24 mg/ml and 2.27 mg/ml respectively.When organic fertilizer used alone, can’t show the much impact on the physiological parameters of the plants. Hence, the use of organic fertilizers in 2 or 3 combinations may be useful in getting the good results. Rather using only one fertilizer alone at a same quantity.
