FUNGOS MICORRÍZICOS EM SOLO CULTIVADO COM SOJA SOB DÉFICIT HÍDRICO E RESÍDUO AGROINDUSTRIAL

Abstract

Cerrado and the Caatinga are types of savannas found in Brazil. These biomes have well-defined characteristics, including low water resources availability for plants, especially in drought periods. Cerrado in particular has a large area in which it is possible to practice irrigated agriculture in these periods; the use of technologies such as bioinputs can favor the plant resistance to water stress, being an important alternative for agricultural production even under these conditions. These bioinputs can also increase the plant efficiency in the absorption and use of water, mitigating the need to use this precious natural resource in irrigation. The symbiotic relationship between fungi and plant roots called mycorrhiza is one of the best known and most promising resources to increase the plant endurance to water stress. In this type of mutualistic relationship, the hyphae of mycorrhizal fungi work as root extensions, enabling higher exploitation of available soil resources, such as water and other nutrients. In return, the plant provides the nutrients that the fungi need to survive. Therefore, this paper aimed to evaluate the irrigation influence on the mycorrhizal fungi activity in the soil added to the mining residues application in soybeans.