Correct Technique for Applying DAP Fertilizer in Paddy Crops to Ensure Maximum Yield

Improper use of DAP fertilizer in paddy cultivation reduces crop quality and harms soil health. Agricultural experts recommend applying it 8 to 10 days before transplanting during the ploughing stage.

Agricultural practices in Jahanabad have undergone a significant transformation over time. While farming once relied heavily on manual labor and animal power, modern machinery and chemical inputs have now taken center stage. Today, achieving a high yield is nearly impossible without the regular use of fertilizers like DAP, urea, potash, and zinc. During the ongoing Kharif season, the significance of these fertilizers becomes even more pronounced, especially in large-scale paddy cultivation.

The Common Mistake in DAP Application
It is frequently observed that farmers apply urea and DAP fertilizers only after the paddy has already been transplanted. While using urea at that stage might be acceptable, experts raise concerns about whether it is correct to apply DAP after transplanting. Many farmers are unaware of the technical reasons why applying DAP after planting the crop is counterproductive, and it is essential to understand the expert perspective on why this method should be avoided.

Expert Insights on Soil Health
Dr. Nirala, a subject matter expert at the Krishi Vigyan Kendra in Gandhar, Jahanabad, noted that farmers across Bihar often apply DAP after the crop has been sown. This practice is fundamentally flawed. DAP is a type of chemical fertilizer that requires considerable time to dissolve properly when mixed with water. If it does not dissolve efficiently, the crop fails to absorb the necessary nutrients, rendering the expensive fertilizer useless. Furthermore, instead of benefiting the crop, this accumulation of undissolved chemicals forms a hard layer underneath the soil surface.

The Importance of Application During Ploughing
Dr. Nirala further explained that to maximize benefits, DAP should always be applied to the fields 8 to 10 days before planting the crop. Using this fertilizer during the ploughing phase ensures the best results. When the soil is ploughed and turned into slurry, the fertilizer mixes thoroughly with the earth. This allows the crop to absorb the essential nutrients in a balanced and efficient manner, essentially serving as a booster dose for the plants.

Optimal Timing and Environmental Impact
Consequently, Dr. Nirala has urged the farmers of Jahanabad to adopt the 8 to 10-day rule for any crop if they intend to use DAP. This practice ensures that the crop receives the correct amount of nutrients for healthy growth. Moreover, this timing is crucial for maintaining the groundwater table. The hard layer that forms in the soil due to late application of DAP can negatively impact soil permeability and groundwater levels, making early application a better choice for both the harvest and the environment.

What this means for you
Across India: Farmers cultivating paddy can reduce wastage and minimize costs by adhering to the correct timing for fertilizer application.

In Jahanabad: Local farmers can protect soil health and groundwater levels by applying DAP during ploughing, 8-10 days before transplanting.

Questions & Answers

1. Why is applying DAP after paddy transplantation considered incorrect?
DAP takes time to dissolve in water; applying it after transplantation prevents the crop from absorbing nutrients and creates a hard layer in the soil.

2. What is the best time to use DAP fertilizer?
According to experts, it is most effective to apply DAP during the ploughing stage, 8 to 10 days before planting the crop.

3. What is the benefit of applying fertilizer during ploughing?
Applying fertilizer during ploughing ensures it is thoroughly mixed with the soil, allowing the plants to absorb nutrients more easily.

4. Does improper use of DAP affect the groundwater table?
Yes, DAP can form a hard layer in the soil, which impacts soil permeability and can be harmful to groundwater levels.

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