Effect of giving triple super phosphate and dolomite fertilizer on mushroom media (baglog) on production of white oyster mushroom (Pleurotus ostreatus)

Abstract

The effort to increase the growth and production of white oyster mushroom (Pleurotus ostreatus), it is necessary to add nutrients to sawdust which will be used as a growing medium for white oyster mushroom. One of the nutrients that need to be added is minerals including Ca (calcium) and Magnesium (Mg) contained in dolomite (CaMg(CO3)2) and macronutrients such as phosphorus contained in TSP fertilizer. The aim of this research to determine the effect of giving TSP fertilizer and dolomite on mushroom growing media (baglog) on the production of white oyster mushrooms. This research was conducted in September 2019 to March 2020 in the village, of, Lau Bakeri village, Kutalimbaru District, Deli Serdang Regency The research used a factorial randomized block design with two treatment factors, namely TSP fertilizer (control, 1.2%, 2.4%) and dolomite (control, 1%, 2%, 3%. The results showed the application of triple super phosphate fertilizer and dolomite did not significantly affect to all observation parameters of white oyster mushrooms, but the interaction between triple super phosphate fertilizer and dolomite was able to accelerate the age of harvesting, increase the fresh weight of mushrooms in the first and second harvests and the number of mushroom caps at the third harvest.

Composition and Properties of Triple Superphosphate Obtained from Oyster Shells and Various Concentrations of Phosphoric Acid

“…TSP has been enormously used in agriculture all over the world, causing the phosphate rock reserves to deplete and prices increased by 300% . Recently, TSPs have also been utilized to reduce the acidity of tropical acid soil, alleviate arsenic toxicity in rice, phytostabilize Pb–Zn mine tailings, cultivate Chlorella pyrenoidosa, grow bermudagrass, produce white oyster mushroom (Pleurotus ostreatus), sustain soil fertility and improve nodulation, produce ceramics, − produce hardening composite materials, and produce bioactive composite bone cements . Other TSP studies include improving phosphate solubility in soil using Trichoderma spp., preparation of slow-release TSP fertilizers, , and investigation of the potential to breed for maize hybrids under reduced P starter fertilizer .…”