Chickpeas and White Button Mushroom as a model of circular economy in Brazil: microbial dynamics, plant growth promotion and organic waste management

• Grant number: 21/09034-1
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: October 01, 2022
• Status: Discontinued
• Field of knowledge: Agronomical Sciences - Agronomy
• Principal Investigator: Diego Cunha Zied
• Grantee: Lucas da Silva Alves
• Host Institution: Faculdade de Ciências Agrárias e Tecnológicas. Universidade Estadual Paulista (UNESP). Campus de Dracena. Dracena , SP, Brazil
• Associated scholarship(s): 24/01185-9 - Use of spent mushroom substrate as an ingredient in new high efficiency biofertilizers, with the inclusion of beneficial microorganisms in the grains and horticultural crops (chickpeas and lettuce)., BE.EP.DR

Abstract

Circular economy models are options to maximize the significance of agricultural products and minimize the generation of agricultural waste. Chickpeas and the white button mushroom are booming in cultivation in Brazil. Records in the literature show that these components can be in harmony. Therefore, the objective is to understand agronomically a circular system composed of the production of legumes and mushrooms. To study the proposed work, there will be three main components: plant production, mushroom production and microbial dynamics. For plant production, experiments will be carried out in protected cultivation and field systems to define the best forms of white button mushroom and its interaction with commercial inoculants. In addition to agronomic performance, will be evaluated the protein and bioactive components of the grain. In the second stage, the agro-industrial residue from chickpeas will be used as a supplement for the white button mushroom. At this stage, we intend to understand the effect of different doses on the production of mushrooms, conditioned or not to commercial supplements internationally. The third stage will specifically address the microbiome dynamics during the crop system, with collections based on three periods: before the supplement application, after the mushroom harvest, and in the chickpea rhizosphere. The 'DNA' of the samples will be extracted, amplified and sequenced in the main microbial groups by PCR. It is intended in the end, to understand the main advantages and limitations of this system, correlating to sustainability indicators already consolidated. (AU)