Nutrient Composition and Chemical Attributes
Single Super Phosphate delivers essential macronutrients and secondary nutrients simultaneously.
Nutrient breakdown in standard SSP:
- Water-soluble phosphorus (16% P2O5): Readily available to plant roots for early root development, tillering, and energy transfer.
- Sulphur (11% S): Critical for synthesizing sulfur-containing amino acids (cysteine, methionine) and increasing oil synthesis in oilseed crops.
- Calcium (19% Ca): Essential for plant cell wall integrity, root elongation, and improving soil structural stability.
- Powdered vs granulated (GSSP): Available in powdered form for basal incorporation or granulated form for uniform mechanical drilling.
Crop Suitability and Agronomic Value
SSP is particularly valuable for oilseed and pulse production across Indian soils.
Core crop applications:
- Oilseed crops: Mustard, groundnut, soybean, and sunflower demonstrate higher seed oil percentages due to SSP's sulphur content.
- Pulse crops: Chickpea, pigeon pea, and moong show enhanced Rhizobium root nodulation and nitrogen-fixing efficiency.
- Vegetables and cereals: Supports potato tuber development, onion bulb pungency, and sturdy wheat tillering.
- Soil amendment: Unlike certain acidifying fertilizers, gypsum content in SSP aids in ameliorating sodic and calcium-deficient soils.
Basal Application and Soil Health Guidelines
Because phosphorus is relatively immobile in soil, application method dictates nutrient efficiency.
Application best practices:
- Basal placement: Apply SSP at or before sowing, placing it 2 to 3 cm below and beside the seed line so emerging roots contact it immediately.
- Soil test alignment: Follow fertilizer recommendations provided on official Soil Health Cards to avoid nutrient over-application.
- Organic manure combination: Blending SSP with well-cured farmyard manure or vermicompost prevents phosphate fixation in iron- and aluminum-rich soils.
Official source
Check the latest rules, benefits and forms here. KisanPe is an independent platform and is not a government website.
Soil Health Card Scheme ↗Related on KisanPe
Common questions
What nutrients are present in Single Super Phosphate (SSP)?
SSP contains 16 percent water-soluble phosphate (P2O5), 11 percent sulphur, and approximately 19 percent calcium.
Why is SSP preferred over DAP for oilseed crops?
SSP contains 11 percent sulphur in addition to phosphorus, which directly enhances oil synthesis and oil percentage in mustard, soybean, and groundnut.
When is the best time to apply SSP to crops?
SSP should be applied as a basal dressing during final land preparation or at the time of sowing near the root zone.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
More Fertilizers & Crop Nutrition guides
Ask Sakhi AI in your language, check live mandi prices or plan a loan with KisanPe tools.