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Effect of Different Plant Growth Regulators on the Yield and Yield Attributes of White Button Mushroom

Bimal Chandra Dey
Department of Agriculture Extension, Khamarbari, Manikganj,

M. Mofazzal Hossain
Department of Horticulture,Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur.

Abdul Mannan Akanda
Department of Plant Pathology,Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur.

M. Kamruzzaman
Department of Agricultural Economics, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur.

Mohammad Zakaria
Department of Horticulture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur.

Md. Bazlul Karim Choudhury
OSD, DG Health, Mohakhali, Dhaka-1212, Bangladesh.

Nirod Chandra Sarker
National Mushroom Development and Extension Centre, Sobhanbag, Savar, Dhaka, Bangladesh.

Abstract/ Executive Summary:

Two plant growth regulators, Gibberellic acid (GA₃ ) and Naphthalene acetic acid (NAA) were used at 20, 50, 100 and 200 ppm concentration to find out their effect on growth, yield and yield attributes of button mushroom. The lowest days required from casing to primordia initiation was 13.6 at 100 ppm GA₃ . The higher number of fruiting body was recorded in NAA 50 ppm (70.6), GA₃ 200 ppm (72.2) and NAA 100 ppm (67.8). The highest yield was recorded in NAA 100 ppm (348.62g/ 3kg of compost) followed by GA₃ 50 ppm (336.52g/ 3kg of compost), NAA 50 ppm (336.09 GA₃ 50 ppm (336.52g/ 3kg of compost) and GA₃ 100 ppm (313.55g/ 3kg of compost).

Keywords: Agaricus bisporus, NAA, GA3 , Yield.

Location: Laboratory and Culture house of National Mushroom Development and Extension Centre, Savar, Dhaka

Start Date: 00-12-2006

End Date: 00-03-2008

Program Area: Crop-Soil-Water Management

Commodity: Mushroom

Objectives:

To find out the effect of PGRs on the growth, yield and yield attributes of button mushroom and to determine the best possible concentration of the PGRs.

Methodology:

The experiment was conducted in the Laboratory and Culture house of National Mushroom Development and Extension Centre, Savar, Dhaka during December 2006 to March 2008. Two plant growth regulators, Gibberellic acid (GA₃ ) and Naphthalene acetic acid (NAA) were used at the concentrations of 20 ppm, 50 ppm, 100 ppm and 200 ppm. The growth regulators were of Wako Pure Chemical Industry Ltd, Japan. The experiment was laid out following completely randomized design with 5 replications. To prepare 20 ppm of NAA and GA₃ solution, 20 mg of NAA and GA₃ powder were taken in two separate volumetric flasks and dissolved in 1 (N) Sodium Hydroxide and Ethyl alcohol respectively. The solvent were added as per requirement to dissolve the solute. Then the volume was made up to 1 L by adding distilled water followed by frequent stirring and 20 ppm solution was prepared. Similarly 50, 100 and 200 ppm solution of NAA and GA₃ were prepared by dissolving 50, 100 and 200 mg of respective powder. The solutions were sprayed during full mycelial growth (before and after casing) , primordial initiation and fruiting body development stage. No watering was done after spraying the PGR on the same day.Paddy straw was used as the main substrate and the compost was prepared by long method of composting (LMC) using rice straw (300 kg), wheat bran (30 kg), gypsum (15 kg), Calcium carbonate (10 kg), Urea (9 kg), Triple super phosphate (6 kg), Muriate of potash (3 kg), Furadan (250 g) and Bavistin (150 g). The ready compost was deep brown in colour, free from bad smell and had 65-67% moisture. Three kilograms of compost wa s mixed with 75 g of mother culture of Agaricus bisporus and poured in a polypropylene bag. The open top of the bags were covered with news papers and incubated in the incubation room at 24 0 ± 2 ⁰C temperature for 20 days. After completion of mycelium run, the news paper sheet was removed and the surface of the compost was uniformly layered with 3.5- 4.0 cm casing materials. Case run was considered complete when mycelia appeared in the valleys of casing layer. After case run, the spawn packets were transferred to a semi controlled culture house where the temperature was decreased and relative humidity was increased by spraying water. The CO₂ concentration of the culture house was lowered by opening the windows for 10-15 minutes at 2-3 hours intervals. This change in environmental parameters induced pinhead formation within 3-4 days and developed into solid button sized mushrooms in another 3-4 days. Mushrooms were harvested before the cap of the fruiting body showed any detachment from the stipe. Data were collected on days required to primordia initiation, number of fruiting body, biological efficiency (BE), yield and benefit cost ratio.

Source of Information: Bangladesh J. Mushroom. 5 (1): 35-41, 2011 (June)

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The present study to find out the effect of PGRs on the growth, yield and yield attributes of button mushroom and to determine the best possible concentration of the PGRs. Spraying of NAA and GA₃ at 50 to 100 ppm during cropping period may be recommended for higher yield of white button mushroom.

Knowledge Management: Journal