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Growth, yield and potassium dynamics of konjac (Amorphophallus muelleri Blume) under different shading and potassium fertilization rates

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Randomized trial assesses growth and yield in konjac under varying shading and potassium rates, suggesting optimal conditions for cultivation.

This research aims to determine how different shading and potassium fertilization rates affect the growth and yield of konjac.
Conducted a field experiment with four potassium rates (0, 75, 150, 225 kg ha -1) nested in three shading rates (0%, 50%, 70%).
Arranged treatments in a randomized complete block design with four replicates.
Monitored leaf area, petiole diameter, potassium uptake, and corm yield across various shading and potassium levels.
Plants under 70% shading had enhanced growth and 27.9% higher corm yield (P ≤ 0.01).
Under 50% shading, T4 (225 kg ha -1) yielded significantly higher (46.4%) than T3 (150 kg ha -1), P ≤ 0.01.
Soil potassium content followed a quadratic function, with optimal potassium fertilization observed 9-10 weeks after planting.

Ghani et al. (2026) studied this question.

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Randomized trial assesses growth and yield in konjac under varying shading and potassium rates, suggesting optimal conditions for cultivation.