In summer, greenhouses are usually ventilated around the clock, which significantly reduces the risk of ammonia gas buildup from chicken manure. As a result, the chances of harmful gas accumulation during top-dressing have been minimized. Considering its rich nutrient content, chicken manure is an excellent choice for top-dressing. However, it's important to follow some key guidelines to ensure safe and effective application.
The amount and method of application should be scientifically planned. When using chicken manure as a top-dressing, it’s common to mix it with water before applying. A recommended rate is about 200–300 kilograms per acre. To make the process more efficient, you can build a small concrete pit at the greenhouse entrance, with a small opening at the bottom. When applying, simply pour the chicken manure into the pit, and let it flow through the small hole into the irrigation system or directly into the planting area. It’s best to apply it in the early morning when temperatures are cooler and the risk of evaporation is lower.
Before applying chicken manure, it must be fully decomposed to avoid burning plants or introducing pathogens. One way to do this is by digging a large pit outside the shed, placing the manure inside, and covering it with plastic film. After 20–30 days, the manure will be well-decomposed. Alternatively, you can use biological decomposition agents like Radiator Antibiotic 968, which accelerates the breakdown process and improves the quality of the final product.
It's also important to combine chicken manure with other fertilizers. While it provides good organic matter and long-term nutrients, it is relatively low in nitrogen, phosphorus, and potassium. Therefore, additional fertilization is necessary, especially during the fruiting stage of crops like eggplants. During this period, the demand for potassium increases. To meet this need, you can mix 8–10 kilograms of potash per mu (about 0.067 acres) when applying chicken manure as a top-dressing. This balanced approach ensures that plants receive all the essential nutrients they need for healthy growth and high yields.
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