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Influence of Different Covering Materials on Yield Attributes and Yield of Milky White Mushroom

Md. Ruhul Amin
Natiorral Mushroom Development and Extension Centre, Sobhanbag, Savar, Dhaka

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

Md. Rokibul Islam
Natiorral Mushroom Development and Extension Centre, Sobhanbag, Savar, Dhaka

A. J. Kakon
Natiorral Mushroom Development and Extension Centre, Sobhanbag, Savar, Dhaka

Mahbuba Moonmoon
Natiorral Mushroom Development and Extension Centre, Sobhanbag, Savar, Dhaka

Md. Monirul Islam
Natiorral Mushroom Development and Extension Centre, Sobhanbag, Savar, Dhaka

Abstract/ Executive Summary:

An experiment was conducted at National Mushroom Development and Extension Centre. Savar, Dhaka to observe the effect of light intensity on yield and yield related attributes of milky white mushroom (Calocybe indica). The days required from casing to primordia initiation was the lowest (9.75 days) at 7 lux and the highest (13.25 days) at 570 lux. The lowest (17.00 days) required for first harvest at 7 lux and it was the highest (22.00 days) at 570 lux. Days required for final harvest ranged from 42.00 Lo 46.25 and the highest (46.25 days) was found at 12 lux. The length of stipe ranged from 6.20 to 14.l3 cm and the highest (14.13 cm) was found at 5 lux and the lowest (6.20 cm) was found at 300 lux. The highest (3.47 cm) diameter of stipe was found at 570 lux and the lowest (2.2 cm) was found at 5 and l2 lux. The highest (7.67 cm) and the lowest (3.65 cm) diameter of pileus were found at 450 lux and at 40 lux respectively. The highest (2.00 cm) and the lowest (1.00 cm) thickness of pileus were found at 570 lux and at 12 lux respectively. Effective fruiting body was obtained maximum (6.00/ packet) at 7 lux and it was minimum (3.50/ packet) at 20 lux. Significant variation was observed in yield and it ranged from 130.00 to 187.30 g/packet. The highest yield (187.30 /packet) was recorded at 570 lux and the lowest (130.00 g/packet) was recorded at l5 lux. Similar trend was observed in dry yield and biological efficiency of milky white mushroom.

Keywords: Calocybe indica, Light interrsity, Covering rnaterials.

Location: National Mushroonr Developrnent and Extension Ceutre, Savar, Dhaka

Start Date: 00-02-2010

End Date: 00-07-2010

Program Area: Crop-Soil-Water Management

Commodity: Mushroom

Objectives:

To determine the appropriate light intensity and environmental factors for higher yield and better quality of milky white mushroom.

Methodology:

The study was carried out in the laboratory, workshop and culture house of National Mushroom Development and Extension Culture (NAMDEC), Savar, Dhaka from February to July 2010. The experiment conducted with fifteen (15) different covering materials, these were considered as treatments ie. T₁: Covered by a single layer of black cloth and a poly propylene (pp) sheet, T₂: Covered by a single layer of black cloth and white cloth and a pp sheet , T₃: Covered by a single layer of hessian (Jute mat) and a pp sheet, T₄: Covered by only a pp sheet, T₅= Covered by a double layer of black cloth and a pp sheet, T₆= Covered by a double layer of white cloth and a pp sheet, T₇ : Covered by a double layer of hessian (Jute mat) and a pp sheet, T₈ : Covered by a single layer of black cloth. T₉ : Covered by a single layer of white cloth, T₁₀ : Covered by a single layer of black cloth and white cloth, T₁₁ : Covered by a single layer of hessian (Jute mat), T₁₂= Open. i.e. no covering, T₁₃: Covered by a double layer of black cloth, T₁₄: Covered by a double layer of white cloth, T₁₅: Covered by a double layer of hessian (Jute mat). The spawn packets with complete mycelium were transferred to the culture house and the brown paper, rubber bands, cotton plug and plastic neck of the spawn packets were removed and the mouths of the polypropylene bags were wrapped and casing was performed with casing soil. Top layer of spawn packet covered with mixture of soil, Farm Yard Manure, cow dung, sand etc is called casing. The loamy soil and cow dung (3:l) were used as casing soil in this experiment. All casing materials were sterilized at 65^oC for 4 hours. The packets were placed separately side by side on the rack in the culture house. The relative humidity was 80-90% and the temperature was 30-35^oC. The relative humidity (%) and the temperature were maintained by watering thrice daily. The light intensity was maintained according to the treatments and measured by Lux meter and proper ventilation in culture house was maintained for fruiting body development. Data on days required from casing to primordia initiation was determined by counting the day's which were required to primordia initiation from the casing date of spawn packet. Number of primordia was determined by counting the number of primordia after primordia initiation. Days required to first harvest was determined by counting the days from the casing date of spawn packet. Days required for final harvest was determined by counting the days which were required to final harvest from the casing date of spawn packet. Number of well developed fruiting body was recorded. Dry and pinheaded fruiting body was discarded. Thickness of the pileus, diameter of pileus, diameter of stipe (cm) and length of stipe (cm) of four randomly selected fruiting bodies were recorded. Yield (g/500g packet) was recorded by weighing the whole cluster of fruiting body without removing the lower hard and dirty portion. Biological efficiency was determined according to Ahmed, 1998. The experiment was laid out following completely randomized design (CRD) with 16 treatments and 4 replications. Data were analyzed following using MSTAT-C computer program. Means separation were computed following Duncan's Multiple Range fest (DMRT) using the same computer program.

Source of Information: Bangladesh J. Mushroom. 5(2): 19-29,201I (December)

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Effective fruiting body was obtained maximum (6.00/ packet) at 7 lux and it was minimum (3.50/ packet) at 20 lux. Significant variation was observed in yield and it ranged from 130.00 to 187.30 g/packet. The highest yield (187.30 /packet) was recorded at 570 lux and the lowest (130.00 g/packet) was recorded at l5 lux. Similar trend was observed in dry yield and biological efficiency of milky white mushroom.

Knowledge Management: Journal