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Effects of Planting Date and Growth Hormone on Growth and Yield of Cauliflower

M. A. Rahman
Department of Horticulture, Bangladesh Agricultural University, Mymensingh-2202

M. Imran*
Hokakido University, Japan

M. Ikrum
ACI, Bangladesh

M. H. Rahman
Department of Horticulture, Bangladesh Agricultural University, Mymensingh-2202

M. G. Rabbani
Department of Horticulture, Bangladesh Agricultural University, Mymensingh-2202

Abstract/ Executive Summary:

An experiment was conducted at the Horticulture Farm of Bangladesh Agricultural University, Mymensingh, during the period from October 2014 to March 2015 to study the effects of planting date and growth hormone on the growth and yield of cauliflower. The experiment consisted of two factors; Factor A: Three planting dates, such as P₁: Planting on 1 November; P₂: Planting on 15 November and P₃: Planting on 1 December; Factor B: Four levels of Growth hormone, such as H₀: No Hormone (control); H₁: 10 ppm IAA (Indole-3 Acetic Acid); H₂: 70 ppm GA₃ (Gibberellic Acid) and H₃: 10 ppm IAA + 70 ppm GA₃. The experiment was laid out following Randomized Complete Block Design (RCBD) with three replications. In case of planting date, the highest plant height (63.26 cm), number of leaves per plant (24.13), leaf length (59.26 cm), leaf breadth (19.31 cm) at harvest, curd diameter (22.25 cm), marketable yield per hectare (28.11 t ha^-1) were recorded from P₂ and the lowest of those parameters were recorded from P₃. In case of growth hormone the highest plant height (63.10 cm), number of leaves per plant (23.66), leaf length (59.05 cm), leaf breadth (18.98 cm) at harvest, curd diameter (22.39 cm), marketable yield per hectare (29.88 t ha^-1) were recorded from H₃and the lowest of those perameters were recorded from H₀. Combination of planting date and growth hormone the highest plant height (65.96 cm), number of leaves per plant (26.42), leaf length (63.64 cm), leaf breadth (20.92 cm) at harvest, curd diameter (25.75 cm), marketable yield per hectare (31.03 t ha^-1) were recorded from planting on 15 November and 10 ppm IAA with 70 ppm GA₃ (P₂H₃) and the lowest parameters (21.75 t ha^-1) were recorded from planting on 1 December and no hormone (P₃H₀). It is apparent from the above results that the combination of planting on 15 November and 10 ppm IAA with 70 ppm GA₃ (P₂H₃) was more productive from the other combinations.

Keywords: Cauliflower, Growth hormone, Planting date, Yield

Location: Horticulture Farm, Bangladesh Agricultural University, Mymensingh

Start Date: 00-10-2014

End Date: 00-03-2015

Program Area: Crop-Soil-Water Management

Commodity: Cauliflower

Objectives:

Considering the background stated above, the present study was undertaken to investigate the effect of planting date and growth hormone with the following objectives- i. to find out the appropriate planting date of cauliflower in relation to yield contributing characters and yield; ii. to find out the appropriate amount of growth hormone of cauliflower in relation to yield contributing characters and yield; and iii. to know the combined effect of planting date and growth hormone for ensuring the maximum growth and higher yield of cauliflower.

Methodology:

The present investigation was carried out at the Horticulture Farm, Bangladesh Agricultural University, Mymensingh, during the period from October 2014 to March 2015.The soil of the experimental plot was silty loam in texture belonging to the Old Brahmaptura Flood Plain. The experimental area was under the subtropical monsoon climate, characterized by heavy rainfall during Kharif season (April to September) and scanty rainfall in Rabi season (October to March). The collected seedlings were raised at the Horticulture Farm, Bangladesh Agricultural University, Mymensingh. The size of seedbed was 3m × 1m. The experiment was undertaken to study the effects of three different levels of planting dates and four different levels of growth hormones on the growth and yield performance of cauliflower. The experiment included two factors as follows: Factor A: Planting dates - Three dates i. P₁: Planting on 1 November ii. P₂: Planting on 15 November iii. P₃: Planting on 1 December, Factor B: Growth hormones - Four levels i. H₀: No Hormone ii.H₁: 10 ppm IAA (Indole-3 Acetic Acid) iii.H₂: 70 ppm GA₃ (Gibberellic Acid) iv.H₃: 10 ppm IAA + 70 ppm GA₃ Thus there were 12 treatment combinations.

Source of Information: J. Environ. Sci. & Natural Resources, 9(2): 143-150, 2016 ISSN 1999-7361

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

From the present experiment it is clear that growth and yield of Cauliflower largely depend upon the planting date and growth hormone. These two factors either singly or in combination influence the growth, quality and yield of the crop. In this experiment, the highest yield per hectare was obtained from the combination with planting on 15 November x 10 ppm IAA + 70 ppm GA3. On the other hand, the lowest yield per hectare was obtained from the combination with planting on 15 December x No hormone.

Knowledge Management: Journal