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Effect of Moisture Content in the Substrate on Growth and Yield of Pleurotus Ostreatus (jacquin Ex Fr.) Kummer

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

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

N. Sultana
Department of Horticulture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh.

I. H. Mian
Department of Plant Pathology, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh.

A. J. M. Sirajul Karim
Department of Soil Science, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh.

S. M. Ruhul Amin
National Mushroom Development and Extension Centre, Sobhanbag, Savar, Dhaka, Bangladesh

Abstract/ Executive Summary:

The experiment was carried out during January to May 2004, comprising eight levels of moisture in substrate (45, 50, 55, 60, 65, 70, 75 and 80%). The mycelium growth rate and the time required to complete mycelium running, first harvest and total harvest were significantly influenced by the moisture levels in substrates, whereas the days required from stimulation to primordia initiation and from stimulation to first harvest were not influenced. A wide variation was observed in the number of fruiting body of oyster mushroom due to influence of the moisture levels in substrate. Sixty percent moisture level in substrate produced the maximum number of fruiting body per packet (91.50). The lowest number of fruiting body per packet (22.25) was recorded in 80% moisture level. Weight of fruiting body is influenced by moisture level in substrates but no trend was observed. Biological efficiency was associated with different moisture level in substrate and 60% moisture showed the best biological efficiency (202.50) followed by 55% (192.00). The worst biological efficiency was observed in 80% moisture. Wide variation was found in the biological yield and economic yield among the moisture levels in substrate. The economic yield per packet gradually increased up to 60% moisture. For further increase of moisture level, the economic yield declined. The highest economic yield (324.10 g/packet) was recorded in 60% moisture, which was statistically similar to that in 55% (304.30 g/packet).

Keywords: Moisture level, Substrate, Yield, Pleurotus ostreatus.

Location: National Mushroom Development and Extension Centre, Sobhanbag, Savar, Dhaka, Bangladesh

Start Date: 00-01-2004

End Date: 00-05-2004

Program Area: Crop-Soil-Water Management

Commodity: Mushroom

Objectives:

To determine the moisture level suitable for the production of Pleurotus ostreatus.

Methodology:

The experiment was carried out during January to May 2004. Eight different moisture levels of the substrate were tested in the experiment. Requisite quantity of tap water was added to substrate of each treatment to have 45, 50, 55, 60, 65, 70, 75 and 80% moisture levels. The substrates were allowed sufficient time for soaking of water uniformly as much as possible. Waste paper was used as the main substrate. Wheat bran was mixed with the waste paper at 2:1 ratio. Calcium carbonate (CaCO₃) was added to the mixture at 0.57% (w/w). Before mixing, both waste paper and wheat bran was sun dried; paper was cut into small pieces and thoroughly mixed. The mixture was poured into polypropylene bags at 500 g/bag to prepare spawn packet. The experiment was laid out following completely randomized block design with four replications.

Source of Information: Bangladesh J. Mushroom. 1(2): 39-45, 2007 (December)

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The results are reported the yield of P. sajor-caju at 60 percent moisture content of the substrate and gave the best cap quality, longer fruiting span of 3.5 months, and higher percent successful bags. But on the other hand that the optimum moisture content were 70% for strain 2068, 80% for strain 2083 and 75% for other strains of Pleurorus ostreatus used in his study. Results of the present experiment revealed that maximum mycelium growth rate and minimum day to complete mycelium running were recorded at 70% moisture of the substrate. Highest number of fruiting bodies, biological efficiency, biological and total yield of Pleurotus ostreatus were achieved with 60% moisture level. So, it may be concluded that waste paper substrate amended with wheat bran having 60% moisture may give maximum production of Pleurotus ostreatus. Wide variation was found in the biological yield and economic yield among the moisture levels in substrate. The economic yield per packet gradually increased up to 60% moisture. For further increase of moisture level, the economic yield declined. The highest economic yield (324.10 g/packet) was recorded in 60% moisture, which was statistically similar to that in 55% (304.30 g/packet).

Knowledge Management: Journal