USE OF BIOSTIMULANTS AND MICROORGANISMS IN MITIGATION OF WATER DEFICIT IN BEAN CULTIVATION
DOI:
https://doi.org/10.15809/irriga.2024v29p368-381Keywords:
Bacillus aryabhattai, Bacillus subtilis, Trichoderma asperellum, Ascophyllum nodusum, Kappaphycus alvareziiAbstract
UTILIZAÇÃO DE BIOESTIMULANTES E MICRORGANISMOS NA MITIGAÇÃO DO DÉFICIT HÍDRICO EM CULTIVO DE FEIJÃO
JOSÉ GOMES MARTINS NETO1; NELMÍCIO FURTADO DA SILVA1; WENDSON SOARES DA SILVA CAVALCANTE1; PEDRO HENRYQUE FERNANDES CABRAL1; FERNANDO NOBRE CUNHA2 E MARCONI BATISTA TEIXEIRA2
1Departamento de Agronomia, Universidade de Rio Verde – UniRV, Campus Rio Verde – GO, Fazenda Fontes do Saber - Campus Universitário, CEP: 75.901-970, Rio Verde GO, Brasil, jose.g.m.neto@academico.unirv.edu.br, nelmicio@unirv.edu.br, wendsonbfsoarescvt@gmail.com, pedro.h.f.cabral@academico.unirv.edu.br; ORCID (https://orcid.org/0000-0003-1970-4959, https://orcid.org/0000-0001-7055-8075, https://orcid.org/0000-0002-5224-5486, https://orcid.org/0000-0002-6401-9929).
2Departamento de Hidráulica e Irrigação, Instituto Federal de Educação, Ciência e Tecnologia Goiano – Campus Rio Verde, Rodovia Sul Goiana, km 01, Zona Rural, CEP: 75.901-970, Rio Verde GO, Brasil, fernandonobrecunha@hotmail.com, marconibt@gmail.com; ORCID (https://orcid.org/0000-0001-8489-7625, https://orcid.org/0000-0002-0152-256X).
1 RESUMO
Os bioestimulantes são substâncias que conferem benefícios fisiológicos e morfológicos às plantas. Objetivou-se com este estudo avaliar a resposta da cultura do feijão à aplicação de bioestimulantes, onde receberam uma dose de uma formulação de bioestimulantes via tratamento de sementes à base de extrato de alga (Ascophyllum nodusum + Kappaphycus alvarezii) + complexo de aminoácidos contendo (Prolina + arginina) na dose de 2 mL kg-1 de semente, e verificar seu efeito nas condições edafoclimáticas da região do Cerrado. O experimento foi conduzido com plantas de feijão em vasos, em casa de vegetação. Foi utilizado um delineamento inteiramente casualizado (DIC), em esquema fatorial de 4 x 4, sendo 4 tratamentos de sementes (Microrganismos, bioestimulantes, microrganismos + bioestimulantes e testemunha) e 4 níveis de reposição hídrica (25%, 50%, 75% e 100% da capacidade de campo – CC), com 5 repetições, totalizando 16 tratamentos e 80 unidades experimentais (Vasos). Foram determinadas as seguintes variáveis: altura de planta (AP), diâmetro de caule (DC), número de folhas (NF) e área foliar (AF). Os dados encontrados indicam que a aplicação via tratamento semente dos bioestimulantes + microrganismos podem efetivamente aumentar a capacidade de defesa das plantas de feijão contra os danos induzidos pelo déficit hídrico imposto.
Palavras-chave: Bacillus aryabhattai; Bacillus subtilis; Trichoderma asperellum, Ascophyllum nodusum; Kappaphycus alvarezii.
MARTINS NETO, J. G.; SILVA, N. F.; CAVALCANTE, W. S. S.; CABRAL, P. H. F.; CUNHA, F. N.; TEIXEIRA, M. B.
USE OF BIOSTIMULANTS AND MICROORGANISMS IN MITIGATION OF WATER DEFICIT IN BEAN CULTIVATION
2 ABSTRACT
Biostimulants are substances that provide physiological and morphological benefits to plants. The aim of this study was to evaluate the response of bean crops to the application of biostimulants, where they received a dose of a biostimulant formulation via seed treatment based on seaweed extract (Ascophyllum nodusum + Kappaphycus alvarezii) + an amino acid complex containing proline + arginine at a dose of 2 mL kg -1 of seed, and to verify its effect on the edaphoclimatic conditions of the Cerrado region. The experiment was conducted with bean plants in pots in a greenhouse. A completely randomized design (CRD) was used in a 4 x 4 factorial scheme, with 4 seed treatments (microorganisms, biostimulants, microorganisms + biostimulants and control) and 4 levels of water replacement (25%, 50%, 75% and 100% of field capacity - CC), with 5 replicates, totaling 16 treatments and 80 experimental units (Pots). The following variables were determined: plant height (AP), stem diameter (DC), number of leaves (NF) and leaf area (AF). These findings indicate that the application of biostimulants + microorganisms via seed treatment can effectively increase the defense capacity of bean plants against damage induced by imposed water deficit.
Keywords: Bacillus aryabhattai; Bacillus subtilis; Trichoderma asperellum, Ascophyllum nodusum; Kappaphycus alvarezii.
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