Reasons for Yellowing Leaves on Alocasia macrorrhizos and the Latest Prevention and Treatment Methods
As a plant with relatively large leaves, Alocasia macrorrhizos requires considerable attention in daily cultivation. Its irregular funnel shape easily causes dust to accumulate on the leaf surface, and its leaf stems are also relatively prone to damage. Its leaves tend to yellow relatively more often, and growers should pay attention to this aspect. Let's learn about more reasons for leaf yellowing together with the editor.
1. External damage
When Alocasia macrorrhizos is planted in batches, the spacing is usually required to be relatively large, but many growers overlook this issue. During its later rapid growth, the leaves expand very quickly, and when the spacing is too close, they interlock and press against each other, competing for growing space and causing injury. And when growers discover this situation, the process of widening the spacing also has a high chance of causing artificial damage. These external injuries can seriously affect the nutrient transport of its roots and stems, causing the leaves to yellow. Therefore, in daily care, contact with Alocasia macrorrhizos should be reduced to avoid unnecessary damage.
2. Water accumulation and dust accumulation
At present, farmers who cultivate Alocasia macrorrhizos generally use semi-open-air greenhouse cultivation, which causes Alocasia macrorrhizos to be exposed for a long time to an environment with a lot of external dust. Alocasia macrorrhizos has a relatively high demand for sunlight, and its leaf shape easily accumulates dust, so over a long period of accumulation, the leaf surface becomes covered with dust, resulting in insufficient sunlight. If growers find that some leaf surfaces have more black accumulation and the leaves begin to yellow, then this is basically the reason. When a lot of dust is found, some leaves should be cleaned, or sprinkler irrigation can be used for prevention.
3. Soil fertility
An ideal growing environment has a great impact on Alocasia macrorrhizos, so high-quality soil is relatively important for it. Many growers, due to lack of experience in the early stages of cultivation, choose soil that has some problems, such as excessive alkalinity or insufficient fertility, both of which can cause its leaves to yellow. If the yellowing starts from the highest leaves and slowly spreads downward, with obvious yellowing and withering at the stem area, then it is very likely due to insufficient fertility. At this time, a certain amount of compost should be added to the soil.
4. Fertilizer and water
Fertilizer and water are always two of the major elements in the growth of Alocasia macrorrhizos. The level of fertility affects its leaves, and the amount of water does the same. When fertility is excessive, it burns the seedlings and causes yellowing; when fertility is lacking, the seedlings wither and yellow; when there is too much water, the roots rot and the leaves yellow; when there is too little water, the plant weakens and yellows. Everyone can distinguish based on the actual situation. If fertility is severely excessive, the soil needs to be changed; for the others, just solve them in a targeted way according to the actual situation, supplementing whatever is lacking, and draining when there is too much water.
The above are some common reasons for yellowing leaves on Alocasia macrorrhizos and their prevention and treatment methods, and growers should pay attention. For more related information, you can come to our website to consult us!