Enhancing Organic Tomato Yield and Quality by Liquid Organic Fertilizer

摘要

Background and Objective: Liquid organic fertilizer increases fruit yield. Different crop and formulation may have different result. This study aims to determine the best formula of liquid organic fertilizer for organic tomato. Materials and Methods: The study consists of two activities: formulation of liquid organic fertilizer and the evaluation of liquid organic fertilizer on organic tomato growth and yield. The first activity was a material analysis that compared 9 different organic materials. The second activity was a glass house experiment that used different rate of solid manure and liquid organic fertilizer. Results: The first activity found that white leadtree had a great potential as a nitrogen source, elephant grass and goat manure had a high amount of phosphorus and rabbit manure had the highest amount of potassium content. The second activity found that the application 20 mL Lsup?/supsup1/sup of liquid organic fertilizer increased the tomato yield up to 83% and improved vitamin C up to 66% than the control. Conclusion: Liquid organic fertilizer made from manure (rabbit and goat manure) and green manure (white leadtree and elephant grass) doses 20 mL Lsup?1/sup enhanced the fruit yield and vitamin C of organic tomato.