Effect of Residues Agricultural Wastes on the Productivity and Quality of Pleurotus colombinus L. by Using Polyethylene Bags Wall Technique

Abstract

The investigation studied effect of residues of agriculture wastes by using polyethylene bag wall technique on Pleurotus colomninus L. srain 99 yield and their quality during both successive seasons of 2013/2014 and 2014/2015. The results indicated that different substrate formulas such as clover straw, wheat straw, sawdust, corn cob, soybean straw and rice straw gave significant differences characteristics of fruiting bodies, yield, biological efficiency, nutritional composition and mineral contents. The highest number counted fruit/bag was obtained from rice (14 and14.33 fruit/bag) and wheat straw (14 and 13.33fruit/bag) in both seasons respectively. However, the elevated yield weight (288.10 and317.33g/bag and biological efficiency (82.26 and 90.63%) was found from soybean straw in both seasons respectively. The six substrates exhibited the suitable cultivation media and their effectiveness on physical characteristics such as stalk length, stalk diameter and cap diameter. Highest content of nitrogen (2.50 and 2.57g/100g) phosphorus (2.50 and 2.57g/100g) potassium (2.54 and 2.63g/100g) was achieved from clover straw in both seasons respectively. While the elevated contents of protein (7.41 and 7.24g/100g), carbohydrates (31.40 and 33.34g/100g) and energy (158.17 and165.91) obtained from soybean straw in both season respectively. Wheat straw substrate gave an increment fat (0.42 and 0.42g/100g) and fiber content (5.42 and 5.60g/100g in both season respectively, on the other side corn cob substrate gave the highest ash content (9.11 and 9.30g/100g in both seasons respectively. The raw and spent substrates were analyzed for their nutritional value composition.