Fertilizer application near the seed, also known as seed fertilizer, is a method used to provide essential nutrients directly to the young plant during its early growth stage. However, not all types of fertilizers are suitable for this approach. Using the wrong kind can negatively impact seed germination and seedling development. Here are some fertilizers that should be avoided when used as seed fertilizers:
Ammonium bicarbonate tends to decompose easily, releasing ammonia gas which can damage the seeds and hinder germination, leading to uneven emergence. Ammonium nitrate is highly hygroscopic, meaning it absorbs moisture from the air, which can cause it to liquefy and stick to the seeds, potentially reducing germination rates.
Ammonium chloride and potassium chloride both contain high levels of chloride ions. When applied too close to the seed, they can increase the local concentration of chloride, which is harmful to young plants and may prevent proper germination. If there's an urgent need to use these fertilizers in seed applications and no better alternatives are available, it's crucial to keep the seeds and fertilizers separated and strictly limit the amount used.
In general, nitrogen-based fertilizers that are volatile, hygroscopic, or contain harmful substances should not be used as seed fertilizers. Improper use can lead to poor germination and weak seedlings, ultimately affecting crop yield. Farmers should be cautious and informed when selecting and applying fertilizers to ensure optimal plant growth and healthy harvests.
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