الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
 |  | from | 119 |  |  |
| | | from | 119 | | |
Abstract
This study was carried out during two growing seasons of 2014 / 2015 to investigate the effect of organic supplementations and organic substrates on the productivity of oyster mushroom (Pleurotus florida). This work was done in Mushroom Research Laboratory (MRL), Horticulture Department, Faculty of Agriculture, Zagazig University, Zagazig City, El Sharkia Governorate, Egypt. The organic supplementations added were rice bran and wheat bran at rates of 5 %, 10 % and 15 % (W/W) of each separately and the organic substrates used for growing mushroom were rice straw and banana leaves separately or in different mixtures (1:1, 1:3 and 3:1 W/W). The best favourable treatment for increasing both diameter and weight of cap and stipe, number of cluster / bag, early yield and total yield was cultivation of oyster mushroom on rice straw supplied with 15 % rice bran, followed by rice straw + 10 % rice bran. The highest values of both average cluster weight and dry matter percentage were obtained when mushroom cultivated on rice straw + 5 % rice bran, In addition, rice straw substrate amended with 15 % rice bran gave the highest values of biological efficiency percentage. Whereas, cultivation of mushroom on rice straw + 15 % wheat bran produced the lowest number of clusters per bag and lowest biological efficiency percentage, followed by rice straw + 5 % wheat bran. On other hand, growing of oyster mushroom on rice straw + 10 % wheat bran recorded the highest values of N, P, K, crude protein and total carbohydrates in fruit bodies, whereas fruit bodies obtained from growing of oyster mushroom on rice straw + 15 % rice bran contained the lowest value of potassium and total carbohydrates percentage. Cultivation of oyster mushroom on mixture of rice straw (R S) + banana leaves (B L) at (3:1 W/W) recorded the highest values of both cap and stipe weight, number of clusters / bag, average cluster weight, both early and total yield per bag as well as biological efficiency followed by rice straw alone with no significant difference between the two treatments in both seasons. Using rice straw alone as organic substrate for growing pleurotus florida gave the highest carbohydrates content and lowest potassium content in fruit bodies, respectively.