Application of Trichoderma Biofertilizer on Sweet Potato Plants (Ipomoea batatas L.)
Aplikasi Biofertilizer Trichoderma pada Tanaman Ubi Jalar (Ipomoea batatas L.)
DOI:
https://doi.org/10.21070/ups.8199Keywords:
Trichoderma, Biofertilizer, Crown Spraying, Soil TreatmentAbstract
This study aimed to evaluate the effects of Trichoderma asperellum biological agents applied through the soil and foliar spray, along with their interaction, on the vegetative growth of cassava. The spore density in the propagule suspension for foliar spray was equal to that in the solid form used for soil treatment, at 10⁵ CFU·mL⁻¹. The experiment used a factorial Randomized Block Design with four replications. Observed variables included plant height, number of leaves, stem diameter, and yield per 1.5 m² plot. Data were analyzed using 5% ANOVA and Tukey’s test. Results showed that soil application significantly enhanced growth and yield, while foliar spray had no significant effect. Interaction effects were only significant for plant height. The best results were obtained from fertilizer application at planting, with 34.0cm plant height, 114 leaves, 10.05cm stem diameter, and 2,686.6g yield per plot. This indicates the effectiveness of soil-applied Trichoderma at early planting stages.
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