Effect of Chemically Disinfected Wheat Straw on the Growth and Yield of Pleurotus Ostreatus Mushroom

Kanij Mohoua Roksana,Md Nashir Uddin,Kamal Uddin Ahmed

doi:10.5296/jas.v6i1.12487

Kanij Mohoua Roksana, Md Nashir Uddin + Show 1 more

Open Access

https://doi.org/10.5296/jas.v6i1.12487

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Abstract

We investigated the effect of chemically disinfected wheat straw on the growth and yield of oyster mushroom (Pleurotus ostreatus). Various levels of treatments combined with different time (12, 18 and 24 hours) and dose of Formalin (250, 500 and 750ppm) and Bavistin (75ppm) were used, and the results were compared with the control. Compared to the control, almost all the treatments showed increased values, and among them significantly higher mycelium running rate, the lowest time from stimulation to primordial initiation and to harvest, number of primordial per packet, number of fruiting body per packet were found in treatment consists of 750ppm of Formalin with 75ppm of Bavistin for 18 hours. Length and diameter of the stipe, diameter and thickness of pileus, biological yield, economic yield, dry yield and biological efficiency were also significantly increased in this treatment. Wheat straw treated with 500ppm of Formalin with 75ppm of Bavistin for 18 hours performed best in terms of per cent protein and nitrogen content. However, weight of individual fruiting body was significantly higher when treated with 250ppm Formalin with 75ppm of Bavistin for 24 hours.As the sterilization of wheat straw using 750ppm of formalin with 75ppm of Bavistin for 18 hours could control pathogens and gave increased yield, this treatment might be useful as an economically effective treatment for the highest yield of oyster mushroom.

Highlights

Mushrooms are large reproductive structure of edible fungi, and oyster mushroom, Pleurotus ostreatus, is most suited to the climatic condition of Bangladesh and the tropical areas as well
Fruiting body of oyster mushroom was collected from National Mushroom Development and Extension Center (NAMDEC), wheat straw from the local bazaar, and the chemicals were collected from fertilizer shop respectively
The lowest time from primordial initiation to harvest was recorded in the treatment T7 (3.56 days) and the highest time from primordial initiation to harvest was observed in the treatment T1 (4.66 days) (Table 1). These results showed the shortest DFPITH than the previous studies reported by Dhoke et al (2001) who found that the days required for first picking varied from 11.25-12.00 and the final picking completed from 42.25 to 43.50 days depending on different substrates

Summary

Introduction

Mushrooms are large reproductive structure (fruiting body) of edible fungi, and oyster mushroom, Pleurotus ostreatus, is most suited to the climatic condition of Bangladesh and the tropical areas as well It is a good source of protein, vitamins and minerals (Khan et al, 1981), and at fresh harvest it contains about 85-95% water, 3% protein, 4% carbohydrates, 0.1% fats and 1% minerals and vitamins (Tewari, 1986). Oyster mushroom contains 19-35% protein on dry weight basis as compared to 7.3% in rice 13.2% in wheat and 25.2% in milk (Chang & Miles, 1988) It contains 4.0% fat having good quantity of unsaturated fatty acids which are essential in our diet (Holman, 1976). It is rich in essential minerals and trace elements (Chandha and Sharma, 1995) and the amount of niacin, pantothenic acid and biotin are of appreciable level (Subramanian, 1986).The cultivation of oyster mushrooms has become an attractive economic alternative due to its high demand and market value (Chang, 2006)

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