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Comparative Study of Effectiveness of Tsp and Dap Fertilizer on Brinjal

M.Yasmin
Regional Agricultural Research Station, BARI, Jamalpur

F.S.Shikha
Regional Agricultural Research Station, BARI, Jamalpur

M.A. Rahman
Regional Agricultural Research Station, BARI, Jamalpur

S. Akhter
Regional Agricultural Research Station, BARI, Jamalpur

Abstract/ Executive Summary:

The experiment was conducted at Regional Agricultural Research Station (RARS), Jamalpur during the period of 2018-2019 with the objectives to find out suitable phosphorus fertilizer source and application method for higher brinjal production and to increase phosphorus use efficiency. There were six treatments comprising T₁ = P from TSP (100% basal dose), T₂= P from DAP (100% basal dose), T₃= P from DAP (50 % basal + 50% top dress), T₄= P from DAP (25 % basal + 75 % top dress), T₅ = P from DAP (100 % top dress) and T₆ = P-control. NKSZnB were used as a blanket dose in all treatment. Data revealed that, all the treatments were significantly different from control on all the growth and yield parameters. The highest brinjal fruit yield (35.77 t ha^-1) was found in T₃ treatment i.e ; DAP application ( 50 % basal + 50% top dress) and the lowest ( 19.67 t ha^-1) came from control T₆ (phosphorus untreated treatment). Among the six treatments, T₃ treatment (DAP treatment) produced highest dry matter (12.52 t ha^-1), highest agronomic phosphorus use efficiency (536 Kg yield Kg P^-1) compared to TSP treatment.

Keywords: TSP, DAP, Brinjal

Location: Regional Agricultural Research Station (RARS), Jamalpur

Start Date: 00-00-2018

End Date: 00-00-2019

Program Area: Crop-Soil-Water Management

Commodity: Fertilizer, Brinjal

Objectives:

To determine the appropriate source and methods of P fertilizer application to brinjal production and to estimate the phosphorus use efficiency of two phosphorus bearing fertilizers (TSP and DAP).

Methodology:

The experiment was started in 2018-19 period at the soil science field of Regional Agricultural Research Station (RARS) under Jamalpur district in Bangladesh. The site is located at Sonalata series under Agro-Ecological Zone-8 and 9 (AEZ-8 and 9), 24?56´11´´N latitude and 89?55´54´´E longitude and an altitude of 16.46m. The soil of the experimental site was silt clay loam in texture. Before initiation the experiment, the soil samples were collected from a depth of 0-20 cm for each replication and analyzed following standard methods. The experiment was conducted to determine the effect of phosphorus fertilizer source and application method for quality brinjal production during 2018-19.The experiment was laid out in a Randomized Complete Block Design (RCBD) having 6 dispersed replications. The unit plot size was 2.5m x 2.3m and the variety was BARI begun-8. Recommended doses of chemical fertilizer for brinjal (N₁₄₀P₃₀ K₈₀S₁₂Zn₂B₁ Kg ha^-1) were calculated on the basis of soil test values according to fertilizer recommendation guide (BARC, 2012).Phosphorus was added as per treatment from two sources as TSP and DAP. All fertilizers except urea were incorporated to soil during final land preparation. Urea was applied in three equal splits, one-third after 20 DAT, one -third after 40 DAT and the rest one-third after 60 DAT. In plots receiving DAP as a full or partial source of P, the amount of nitrogen from DAP (18 %N) was adjusted with urea-N. The 30 days old brinjal seedlings were transplanted on 1 November 2018 in a spacing of 100 cm x 70cm.TSP and DAP fertilizers were applied in basal and top dress (four splits at one months interval) application method according to the treatment. Other intercultural operations were done as per requirement. Bacterial wilt was observed and controlled by using Diathen M-45 and Nogos 50 EC was used to control fruit and shoot borer. The crop harvesting continued during the month of February to April. Data on yield and yield contributing characters were recorded from ten plants selected randomly for each plot and total yield was calculated through average plant yield by multiplying plant population.

Treatments were as follows

T₁ = P from TSP (100% basal dose)

T₂= P from DAP (100% basal dose)

T₃= P from DAP (50 % basal + 50% top dress)

T₄= P from DAP (25 % basal + 75 % top dress)

T₅ = P from DAP (100 % top dress)

T₆ = P-control

Blanket dose: NKSZnB

Data on vegetative and fruit characters were recorded and analyzed statistically using statistical software STAR which was developed by IRRI. Least significant differences (LSD) were used for means separation at 5% probability level.

Source of Information: Annual Research Report - 2018-2019 Regional Agricultural Research Station (RARS), BARI, Jamalpur

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Use of DAP as a phosphatic fertilizer gave higher brinjal yield, dry matter yield and P fertilizer efficiency compared to TSP fertilizer. Application of DAP (50%basal + 50% top dress) was found to be the most effective for brinjal cultivation. This is the result of 1st year of experiment and to be continued for the confirmation of the result.

Knowledge Management: Report/Proceedings