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Growth and Yield of Summer Tomato as Influenced by Plant Growth Regulators

S. Choudhury
Department of Horticulture, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh

N. Islam
Department of Horticulture, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh

M.D. Sarkar
Department of Horticulture, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh

M.A. Ali
Department of Horticulture, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh

Abstract/ Executive Summary:

A field experiment was carried out at Horticulture Farm of Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh, to assess the effect of different plant growth regulators on tomato during summer season 2011. Different plant growth regulators (PGR) viz. PGR₀= Control, PGR₁ = 4-CPA (4-chloro phenoxy acetic acid) @ 20 ppm, PGR₂ = GA₃ (Gibberellic Acid) @ 20 ppm and PGR₃ = 4-CPA + GA₃ @ 20 ppm of each were used in the study. The growth and yield contributing characters were significantly differed due to different plant growth regulators. The maximum plant height at 60 DAT (86.01cm), number of flowers cluster per plant (10.60), number of flowers per plant (39.69), number of fruits per plant (36.54), single fruit weight (74.01 g) and yield (28.40 t ha^-1) were found in PGR and the minimum for all the parameters were found in control (PGR₀) treatment.

Keywords: 4-Chlorophenoxy acetic acid, Gibberellic acid, Growth, Yield and tomato

Location: Horticultural Farm of Sher-e-Bangla Agricultural University, Dhaka-1207

Start Date: 00-05-2011

End Date: 00-09-2011

Program Area: Crop-Soil-Water Management

Commodity: Tomato

Objectives:

To assess the effect of different plant growth regulators on summer tomato

Methodology:

The experiment was carried out at Horticultural Farm of Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh during summer season (May 2011 to September 2011). Different plant growth regulators viz. PGR₀ = Control (No application of plant growth regulator), PGR₁ = 4-CPA (4-chloro phenoxy acetic acid) @ 30 ppm, PGR₂ = GA₃ Gibberellic Acid) @ 30 ppm and PGR₃ = 4-CPA + GA₃ @ 30 ppm were used as treatments in this study. The experiment was laid out in a Randomized Complete Block Design with six replications. Thirty days old seedlings were transplanted at the spacing of 60 cm × 40 cm in the experimental plot on June 10, 2011. Manures and chemical fertilizers were applied at the rate of cow dung 20 t/ha, Urea 250 kg/ha, Triple Super phosphate (TSP) 200 kg ha^-1 and Murate of Phosphate (MP) 150 kg ha^-1. Later the stock solution was diluted in distilled water (dH₂O) to prepare the working solutions, just before application. Tween-20 at the rate of 0.05% (v/v) was added before spray and mixed well to act as cohesive agent. GA3 was applied in the form of foliar sprays at 21 days after transplanting and 4-CPA was sprayed on plants at anthesis stage. Spraying was performed early in the morning to avoid rapid drying of the spray solution, due to transpiration. Data were collected from ten randomly selected plants from each plot; viz., plant height (cm), number of flower cluster plant^-1, number of flower plant^-1, number of fruits plant^-1, fruit length and diameter, average fruit weight (g) and yield ha^-1. The means were separated by Duncan's Multiple Range Test (DMRT) at 5% level of significance.

Source of Information: Intl. J. Sustain. Agric., 5 (1): 25-28, (2013)

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Plant growth regulators had significant influence on growth and yield of summer tomato, especially the treatment with the combined application of 4-CPA and GA₃(gibberellic acid). Among the different treatments of plant growth regulators-plants treated with the combined application of 4-CPA and GA₃ showed an increased fruit set, fruit diameter, single fruit weight, number of fruits and yield as compared to the plants treated with 4-CPA and GA₃ alone.

Knowledge Management: Journal