PENGARUH KOMPOSISI MEDIA DAN KONSENTRASI ZAT PENGATUR TUMBUH TERHADAP PERTUMBUHAN DAN HASIL JAMUR MERANG

Abstract

Mushroom is a heterotrophic-group organism with no chlorophyll that can grow on media that have a high cellulose content, one of which is agricultural waste. In addition to usual straw used as a medium, mushroom can also be grown on various media including banana leaves, coffee skins, reeds and so on. This research used straw as medium combined with reeds (Imperata cylindrica) which are still included in Poaceae family. As a media mix for the availability of nutrients in the media, rice bran was used, and the addition of plant growth regulator (PGR). The composition of media and PGR was assumed to be able to determine the growth and yield of mushroom. The objective of this research was to identify the composition of media types and concentrations of PGR that could enhance the growth and yield of mushroom. The research was conducted in factorial with the basic pattern of Randomized Group Design (RGD), which consisted of 2 factors with 3 replications. The first factor was the composition of medium and the second factor was the concentration of PGR.

The research results showed that, (1) there was no interaction between the composition of media type with the concentration of PGR on the growth and yield of mushroom, (2) the composition of the media provided insignificant effect on all parameters of observation except the parameter of total number of mushroom body, where M2 was straw treatment: reeds (1:1) gave the best results with the number of mushrooms of 65, and (3) the treatment of PGR concentration did not provide significant effect on growth and production of mushroom. To obtain maximum results, the thing that needs consideration is the composting medium. Medium composting was tailored with the type of media, like reeds that have

harder textures should be given longer composting time or the addition of decomposing microorganisms so that composting can be perfect.