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.
