Effect of Chemical Nutrients (NPK) on Proximate Nutrient and Mineral Content of Oyster Mushroom (Pleurotus ostreatus)

The study was conducted to the effect of different chemical nutrients (NPK) on the proximate composition of oyster mushroom (Pleurotus
ostreatus). Mother culture of oyster mushroom was used as test crop for this experiment. The experiment consists of four different mixers
of chemical nutrients. The highest moisture content was found in T1 (88.57%) treatment, while the lowest moisture content was recorded
in T3 (84.12%).The highest protein content was recorded in T3(25.54%) treatment and the lowest protein content was observed in T1 (22.45%).
The highest lipid content was observed from T3 (6.43%) treatment, whereas the lowest lipid content was obtained in T1 (5.47%). The highest
carbohydrate content was recorded in T1 (39.55%), whereas the lowest was observed in T3 (34.83%) treatment. The highest Iron (Fe) content was
recorded in T
3
(525.48 ppm) and the lowest Iron (Fe) content was observed in T1 (482.89 ppm). Chemical nutrients (4g NPK) with 10 kg rice straw
performed significantly better on growth, yield, nutrient and mineral content of oyster mushroom.