Abstract— The method of pepper cultivation with vertical columns is more efficient and effective because it can be planted with more pepper cuttings compared to the conventional method with only one plant per stake so that the productivity of the plant is higher. The application of Trichoderma harzianum in the vertical column can increase pepper growth. The results of this study indicate that there is an increase in plant height, number of leaves, number of nodes, and number of lateral fruiting branches by applying Trichoderma 1×109/ml in the vertical column. Statistically, the interaction of column media and the addition of Trichoderma shows a significant difference in plant height. Trichoderma can increase nutrient uptake and act as an antagonist for plant pathogens. This microbe is able to dissolve phosphates and certain types of soil minerals. Consequently, the strain effectively increases the growth of pepper. It is important to maintain the suitability of the Trichoderma environment around the pepper so that the microbes continue to survive and provide benefits for plant growth in the long term.
Keywords— Organic material, Black pepper, Vertical column, Trichoderma harzianum.
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