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Improvement of Summer Tomato (lycopersicon Esculentum Mill.) Production Using 4-chlorophenoxy Acetic Acid

Md. Rezaul. Karim
Dept. of Horticulture, Bangladesh Agricultural University, Mymensingh

Md. Sazzad Saharia
Dept. of Horticulture, Bangladesh Agricultural University, Mymensingh

Most. Altaf-Un-Nahar
Dept. of Biotechnology, EXIM Bank Agricultural University, Chapai Nawabganj, Bangladesh

Abstract/ Executive Summary:

A field experiment was conducted at the Horticulture Farm in the Department of Horticulture, Bangladesh Agricultural University, Mymensingh to evaluate the influence of different levels of 4- chlorophenoxy acetic acid on growth and yield potential of tomato during summer. The two factor experiment viz., Factor A: four different concentrations of 4-chlorophenoxy acetic acid (4- CPA) i.e., concentrations of 4-CPA were (i) 0 ppm (without 4-CPA), (ii) 20 ppm, (iii) 40 ppm and (iv) 60 ppm; and Factor B: two varieties of summer tomato namely, BARI Hybrid Tomato-4 and 8. The experiment was laid out in randomized complete block design with three replications. At harvest, the tallest plant (78.53cm), number of flowers and fruits (35.11 and 18.10, respectively) plant^-1, fruit yield plant-¹ and ha^-1 (1.12 kg and 21.98 tons, respectively) were found in BARI Hybrid Tomato-8. At harvest, the maximum plant height (85.57 cm), number of flowers and fruits (44.89 and 24.97, respectively) plant^-1, fruit yield and ha^-1(1.32 kg and 27.78 tons, respectively) were found when 4-CPA applied at 60 ppm, whereas the minimum for these characters were recorded from control plants. In case of combined effect of variety and plant growth regulator, the maximum plant height (88.90 cm), number of flowers and fruits (40.04 and 21.99, respectively), fruit yield plant^-1 and ha^-1 (1.34 kg and 28.28 tons, respectively) were observed in BARI Hybrid Tomato-8 when treated with 4-CPA at 60 ppm, and the minimum for all these characters were found in control plants. The results of the present study suggest that 4-CAP at 60 ppm can be practiced for increasing summer tomato production for both the varieties.

Keywords: Plant growth regulators, Growth, Fruit set, Yield, Summer tomato

Location: Horticulture Farm of Department of Horticulture, Bangladesh Agricultural University, Mymensingh

Start Date: 00-06-2014

End Date: 00-10-2014

Program Area: Variety and Species

Commodity: Tomato

Objectives:

To evaluate the influence of different levels of 4- chlorophenoxy acetic acid on growth and yield potential of tomato during summer.

Methodology:

The experiment was carried out at the Horticultural Farm of Horticulture Department, Bangladesh Agricultural University, Mymensingh during June 2014 to October 2014. Two-factor experiment consisted of four different levels of 4-chlorophenoxy acetic acid (4-CPA) i.e., T₀ = control (without 4- CPA), T₁ = 4-CPA @ 20 ppm, T₂ = 4-CPA @ 40 ppm and T₃ = 4-CPA @ 60 ppm; and two varieties of summer tomato namely, BARI Hybrid Tomato-4 and 8 were used in this study. The experiment was laid out in a randomized complete block design with three replications. Tomato seeds of BARI Hybrid Tomato-4 and 8 were collected from Vegetable Research Division of Bangladesh Agricultural Institute, Joydevpur, Gazipur. Thirty-day-old seedlings were transplanted at a spacing of 60 cm × 50 cm. Manures and fertilizers were applied at the rate of cowdung 12 t/ha, urea 450 kg/ha, Triple Super Phosphate (TSP) 350 kg/ha and Muriate of Potash (MoP) 300 kg/ha . 4-CPA was sprayed early in the morning to avoid rapid drying of the spray solution due to evaporation. Data were collected from five randomly selected plants from each plot and were statistically analyzed to find out the statistical significance of the experimental results. The means for all the treatments were calculated and the analyses of variance for all the characters were performed by F test. The significance of difference between the pairs of means was separated by LSD test at 5% or at 1% levels of probability.

Source of Information: J. Biosci. Agric. Res. 04(02): 86-91(2015)

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The results of the present study suggested that 4-CAP at 60 ppm can be practiced for increasing summer tomato production for both the varieties.

Knowledge Management: Journal