Whatsapp
X
Mail
Copy link Sesame Trial with Polysulphate® in India
Seed Yield Increase
Kanpur, Uttar Pradesh, India 2014
Seed Yield Increase
Key Conclusions
Using Polysulphate in the fertilizer regime increased sesame seed yield by 33% compared to the control, resulting in a dramatic 43% increase in oil yield.
Objective
To test the efficacy of Polysulphate as a sulfur source on the performance of sesame (Sesamum indicum L.) crops in India.
Trial Details
Trial station
Kanpur, Uttar Pradesh, India
Crop
Sesame
Product
Standard Polysulphate 0-0-13
Assessments
Yield, yield components, oil content, and nutrient uptake
Treatments
The experiment was laid out in a randomized block design with 3 replicates and included 6 treatments:
- T1: Control without S and K fertilization (100% NP through urea and DAP only)
- T2: 100% NPK (urea, DAP, and Muriate of Potash (MOP))
- T3: 100% NP + 50% S through Polysulphate (20 kg S/ha) (balanced K through MOP to make 100% K)
- T4: 100% NP + 75% S through Polysulphate (30 kg S/ha) (balanced K through MOP to make 100% K)
- T5: 100% NP + 100% S through Polysulphate (40 kg S/ha) (balanced K through MOP to make 100% K)
- T6: 100% NPK (urea, DAP, and MOP) + 100% S through gypsum (40 kg S/ha)
The recommended dose of fertilizers (120 kg N, 60 kg P2O5, 60 kg K2O/ha and 40 kg S/ha) was applied as per the treatments. The full dose of P, K, S, and a half dose of N were applied at the time of sowing as a basal application. The remaining half dose of N was applied in 2 equal splits, at the stages of maximum tillering and flower initiation.
| Treatment | N | P | K | S | Source of fertilizer | |
|---|---|---|---|---|---|---|
| kg/ha | kg/ha | kg/ha | kg/ha | |||
| T1 | NP | 120 | 60 | 0 | 0 | Urea and DAP |
| T2 | NPK | 120 | 60 | 60 | 0 | Urea, DAP, and MOP |
| T3 | NPKS20 Polysulphate | 120 | 60 | 60 | 20 | Urea, DAP, MOP, and Polysulphate |
| T4 | NPKS30 Polysulphate | 120 | 60 | 60 | 30 | Urea, DAP, MOP, and Polysulphate |
| T5 | NPKS40 Polysulphate | 120 | 60 | 60 | 40 | Urea, DAP, MOP, and Polysulphate |
| T6 | NPKS40 Gypsum | 120 | 60 | 60 | 40 | Urea, DAP, MOP, and gypsum |
Treatments
The experiment was laid out in a randomized block design with 3 replicates and included 6 treatments:
- T1: Control without S and K fertilization (100% NP through urea and DAP only)
- T2: 100% NPK (urea, DAP, and Muriate of Potash (MOP))
- T3: 100% NP + 50% S through Polysulphate (20 kg S/ha) (balanced K through MOP to make 100% K)
- T4: 100% NP + 75% S through Polysulphate (30 kg S/ha) (balanced K through MOP to make 100% K)
- T5: 100% NP + 100% S through Polysulphate (40 kg S/ha) (balanced K through MOP to make 100% K)
- T6: 100% NPK (urea, DAP, and MOP) + 100% S through gypsum (40 kg S/ha)
The recommended dose of fertilizers (120 kg N, 60 kg P2O5, 60 kg K2O/ha and 40 kg S/ha) was applied as per the treatments. The full dose of P, K, S, and a half dose of N were applied at the time of sowing as a basal application. The remaining half dose of N was applied in 2 equal splits, at the stages of maximum tillering and flower initiation.
| Treatment | N | P | K | S | Source of fertilizer | |
|---|---|---|---|---|---|---|
| kg/ha | kg/ha | kg/ha | kg/ha | |||
| T1 | NP | 120 | 60 | 0 | 0 | Urea and DAP |
| T2 | NPK | 120 | 60 | 60 | 0 | Urea, DAP, and MOP |
| T3 | NPKS20 Polysulphate | 120 | 60 | 60 | 20 | Urea, DAP, MOP, and Polysulphate |
| T4 | NPKS30 Polysulphate | 120 | 60 | 60 | 30 | Urea, DAP, MOP, and Polysulphate |
| T5 | NPKS40 Polysulphate | 120 | 60 | 60 | 40 | Urea, DAP, MOP, and Polysulphate |
| T6 | NPKS40 Gypsum | 120 | 60 | 60 | 40 | Urea, DAP, MOP, and gypsum |
Results
- Sesame yield increased significantly and steadily in response to the increasing S dose applied through Polysulphate (T3-T5).
- Seed yield increased by 33% at the maximum S dose of 40 kg S/ha (T5) when compared to no S addition (T2). The same S dose, when applied through gypsum (T6), yielded slightly fewer seeds.
- The response of oil yield to Polysulphate fertilizer application was dramatic, providing a 43% increase (T5 vs. T2). Sulfur applied through gypsum (T6) also gave rise to a significant increase in oil yields, although to a lesser extent than with Polysulphate.
- Yield components like pods per plant, pod length, seeds per pod and seed weight were highest at the maximum S level (T5).
- K and S uptake by sesame crop increased with increasing S dose applied through Polysulphate (T3-T5).
Polysulphate fertilizer increases sesame seed and stover yield.
* From research funded by the International Potash Institute www.ipipotash.org
Other Interesting Trials
Standard Polysulphate 0-0-13
Fine grade exceptional multi-nutrient fertilizer
