EFFECT OF DIFFERENT LEVEL OF LIQUID MINERAL SUPPLEMENT (WUXAL SUPER) ON THE YIELD AND NUTRITIONAL STATUS OF OYSTER MUSHROOM (Pleurotus ostreatus)

Abstract

The present study was carried out at the Biochemistry laboratory and Mushroom Culture House (MCH)of Biochemistry Department, Sher-e-Bangla Agricultural University, Dhaka, during the month of January to May ’09 to investigate the yield performance of oyster mushroom supplemented with different levels of liquid minerals. All the treatments performed significantly over the control. The lowest time from stimulation to primordia initiation (5.2 days) and primordia initiation to harvest (3.9 days) was observed in T 4 (Wuxal Super @ 0.3%). The highest number of primordia/packet (66.33) was observed in the T and the highest number of fruiting body/packet was observed in T 3 2 (70.00) while the highest weight of individual fruiting body was observed in T (2.25g). The highest biological yield (129.0 g/packet), economic yield (123.7 g/packet) dry yield (12.73 g/packet) and biological efficiency (44.48%) was recorded in the T 4 (Wuxal Super @ 0.3%). The study also investigate the effect of liquid mineral supplements on nutritional status the highest moisture percent was observed in T 4 (90.44%) the highest dry matter percent was observed in T 4 3 (10.30%). Among the biochemical attributes the highest content of protein was found in T (23.60%), lowest lipid percentage was counted under T 3 4

(5.16%), the highest percentage of ash was observed in T (9.60%), the highest percentage of carbohydrate was recorded in T highest percentage of crud fiber was recorded in T (29.70 %). Therefore there was not much effect of the treatments on biochemical properties of produced mushroom. In case of elemental composition the highest percentage of nitrogen was recorded in the T 4

4 (3.78) while highest percentage of phosphorus (0.96), potassium (1.44) and iron (43.67) was recorded in T and the the highest amount (mg) of manganese (2.80) and zinc (14.17) was counted under T 3

There fore it can be concluded that wuxal super @ 0.3% is found as a efficient supplement for mushroom production lowering the cost increasing yield. 5. 1 (46.07%) and 5