DAP vs SSP: Which Fertilizer is More Beneficial for Mustard Cultivation? Expert Insights

For better mustard yield, farmers often face a common dilemma should they apply DAP or SSP? Both fertilizers play a vital role in improving soil fertility, yet their composition, effects, and benefits differ significantly. It is crucial to understand which fertilizer works best under specific soil and crop conditions.

Why Choosing the Right Fertilizer Matters for Mustard Farming:

Mustard is one of the major oilseed crops grown across India during the Rabi season. Along with proper sowing, irrigation, and pest management, selecting the right fertilizer directly influences the yield. An incorrect choice of fertilizer can stunt plant growth and reduce productivity.

Key Features of DAP (Di-Ammonium Phosphate):

DAP contains 18% nitrogen and 46% phosphorus, making it highly effective for the early growth and root development of plants.

Advantages:

1. Promotes strong, healthy, and green plant growth.
2. Supports seed germination and accelerates early growth.
3. Ensures sufficient phosphorus availability for better root strength.

Limitations:

1. DAP does not contain sulfur, an essential nutrient for oilseed crops like mustard.
2. Continuous use may cause sulfur and calcium deficiency in the soil.

Key Features of SSP (Single Super Phosphate):

SSP contains 16% phosphorus, 12% sulfur, and 20% calcium. It is considered especially suitable for oilseed crops such as mustard, groundnut, and sesame.

Advantages:

1. Enhances oil content and quality in mustard and other oilseed crops.
2. Improves soil structure and overall fertility.
3. More affordable and cost-effective compared to DAP.

Limitations:

1. Contains less phosphorus than DAP.
2. Lacks nitrogen, hence needs to be supplemented with urea.

Which Fertilizer Should Farmers Choose?

If your soil is deficient in sulfur or you are growing oilseed crops like mustard, SSP is a better choice. It not only improves crop quality but also maintains soil nutrient balance. On the other hand, DAP is ideal for farmers focusing on initial plant growth and root development.

Ultimately, the choice between DAP and SSP depends on the nutrient status of the soil and the specific growth stage of the mustard crop.