Physio-Agronomic Characterization of Upland Rice Inoculated With Mix of Multifunctional Microorganisms

Abstract

Multifunctional microorganisms can contribute significantly to improve plant performance and are innovative technology for sustainable development. Thus, objective of this study was to determine the effect of bioagents applied alone or in mix on the performance of upland rice. The experiment was conducted in a greenhouse in a completely randomized design with four replications. The 26 treatments consisted of the rhizobacteria Bacillus sp. (BRM 32109, BRM 32110 and 1301), Azospirillum sp. (1381), Azospirillum brasilense (Ab-V5), Pseudomonas sp. (BRM 32112), Pseudomonas fluorescens (BRM 32111), Burkholderia pyrrocinia (BRM 32113), Serratia sp. (BRM 32114), and a fungal genus formed by a pool of Trichoderma asperellum (T-06, T-09, T-12, and T-52), applied alone or in mix, plus a control treatment without microorganism application. The most effective treatments were the mixes of microorganisms 1301 + Ab-V5 and BRM 32114 + pool of Trichoderma asperellum, as they provided an average increase of 123 and 88% in the number of panicles and 206 and 167% in the grain yield of upland rice plants, respectively. Mixes of 1301 + Ab-V5, BRM 32114 + Trichoderma asperellum pool, BRM 32110 + BRM 32114, BRM 32110 + Ab-V5, 1301 + BRM 32110 and 1381 + Trichoderma asperellum pool also provided better morphophysiological performance in rice plants (photosynthetic rate, carboxylation efficiency, number of tillers, shoot dry biomass and nutrient content in shoot and root). Therefore, the use of multifunctional microorganisms in the management of upland rice was efficient in its ability to provide better development of plants.

Desenvolvimento inicial de arroz de terras altas inoculado e coinoculado com rizobactérias multifuncionais

“…This is important because better plant growth leads to more efficient absorption of nutrients and water from the soil, increases tolerance to drought and pest and disease attacks, improves plant support and fixation in the soil, and hence increases productivity. J. P. T. Fernandes et al (2020) also found that rice plants treated with multifunctional microorganisms had greater root development, photosynthetic rates, carboxylation efficiency, number of tillers, shoot and root dry biomasses, and absorption of nutrients, reflecting higher grain yields.…”

Upland rice grain yield and plant improvement by single and combined beneficial microorganisms

“…On the other hand, a signi cantly lower root weight by 8.23 g was observed for upland rice in the control plants. Also Sousa et al (2019), in lowland rice, and Fernandes et al (2020), in upland rice, reported increases in root development when using bene cial microorganisms in relation to the control plants (no microorganisms). According to Filippi et al (2011), multifunctional microorganisms can control harmful microorganisms by producing antibiotics and enzymes that degrade the cell wall, favoring the root development of plants.…”

“…Latter, Nascente et al (2017a) reported that the use of mix of PGPMs allowed increasing more upland rice grain yield. Fernandes et al (2020) also reported that coinoculation with two microorganisms provided better development of rice plants.…”

Cafezais Arborizados E Geadas: Um Estudo De Caso Para O Estado Do Paraná - Revisão

“…e Pseudomonas sp. tiveram maior acúmulo de nutrientes na parte aérea(Nascente et al, 2017a) Fernandes et al (2020). verificaram aumento significativo no número de panículas e na produtividade de grãos do arroz de terras altas inoculado com mixes de RPCV e Trichoderma asperellum.…”