Utilização de modelagem de misturas ternárias na avaliação de formulações de composto para produção de Agaricus bisporus.

Abstract

In this work there was developed a study to propose and evaluate different compost formulations for the production of Champignon mushroom (Agaricus bisporus (Lange) Imbach) in Rio Taquari valley, RS, using experimental planning for ternary compounds. This way, a preliminary study came up with cameron grass, rice straw and corn straw (hybrid and transgenic) as the main alternative materials available in the region to prepare the compounds. In order to reduce the number of tests, there was conducted an experimental planning with ternary compound models, which also included the development of linear, quadratic and cubic for mixing the three components. Altogether 12 production tests were planned in triplicate. Through the results, it was possible to observe that in all the tests the productivity was significantly lower than the one presented in the literature, and the best performance was observed for the cameron grass and rice straw (biological efficiency = 4.79%) in binary compound, considering that the best concentration for the compound was obtained with 55% of cameron grass and 45% of rice straw. It was also possible to verify that the productivity and biological efficiency have a significant influence on carbon and phosphorus concentrations. Finally, the results also made it possible to conclude that the compound obtained from transgenic corn straw have a biological efficiency 24% higher than the hybrid corn straw. In ternary compounds the best biological efficiency (2.79%) was obtained in tests with transgenic corn straw.