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The Effect of Ssp, Tsp and Dap on the Yield of Mature Tea and Its Soil Properties

Dr. A.K. M. Golam Kibria
Chief Scientific Officer
Soil Science Division, BTRI, Srimangal, Moulvibazar

Ashim Kumar Saha
Scientific Officer
Soil Science Division, BTRI, Srimangal, Moulvibazar

Abstract/ Executive Summary:

Phosphorous is an essential element for the normal growth of plants. This element is usually applied in the soil as triple super phosphate. In the recent years triple super phosphate (TSP) is not available in the market in sufficient quantities. As a result, planters are using single super phosphate in stead of TSP. But SSP has a strong acidic residual effect in the soil. On the other hand Rock phosphate (RP) is rather slow acting phosphate fertilizer with no acidic residual influence on the soil. The present study is thus aimed at company these three types of phosphatic fertilizer on the yield of tea as well as on the residual effect on the soil with the following treatments. The Yield data showed a significant increase due to application of phosphatic fertilizers. The highest yield was recorded where DAP was applied followed by RP, TSP, SSP. From the Average yield of 4 years from treatment T₉ it was found that the application of DAP@ 60 kg/ha produced the highest yield 347.3 kg/ha followed by TSP@ 60kg/ha.

Keywords: SSP, TSP,RP, DAP, Mature tea

Location: Sathgao T.E.

Start Date: 01-01-1998

End Date: 31-12-2001

Program Area: Crop-Soil-Water Management

Commodity: Fertilizer

Objectives:

The present study is thus aimed at company these three types of phosphatic fertilizer on the yield of tea as well as on the residual effect on the soil

Methodology:

Treatments: 7, Replication: 3, No. of plots: 21, Design: Randomized Block, Treatment combination: T₁ = Control (No Phosphates) + Other basal nutrients, T₂ = TSP (30kg/ha) + Other basal nutrients, T₃= TSP (60kg/ha) + Other basal nutrients, T₄ = SSP (30 kg/ha) + Other basal nutrients, T₅ = SSP (60kg/ha) + Other basal nutrients, T₆ = RP (30kg/ha) + Other basal nutrients, T₇ = RP (60 kg/ha) + Other basal nutrients, T₈ = DAP (30kg/ha) + Other basal nutrients, T₉ = DAP (60kg/ha) + Other basal nutrients

Source of Information: Biennial Report 2001-2002

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The Yield data showed a significant increase due to application of phosphatic fertilizers. The highest yield was recorded where DAP was applied followed by RP, TSP, SSP. From the Average yield of 4 years from treatment T₉ it was found that the application of DAP@ 60 kg/ha produced the highest yield 347.3 kg/ha followed by TSP@ 60kg/ha.

Knowledge Management: Report/Proceedings