Microbial community and its relationship with the suppression of nematodes in a crop-livestock integration system

• Grant number: 21/10823-0
• Support Opportunities: Regular Research Grants
• Start date: September 01, 2022
• End date: August 31, 2024
• Field of knowledge: Agronomical Sciences - Agronomy - Soil Science
• Principal Investigator: Fabio Fernando de Araujo
• Grantee: Fabio Fernando de Araujo
• Host Institution: Faculdade de Ciências Agrárias. Universidade do Oeste Paulista (UNOESTE). Campus de Presidente Prudente. Presidente Prudente , SP, Brazil
• Associated researchers: Claudia Regina Dias Arieira ; Eliana Guedes Stehling ; Lucas William Mendes
• Associated scholarship(s): 24/02747-0 - Assessment of biological activity and nematode community in a crop-livestock integration system, BP.TT; 22/14418-6 - Evaluation of biological activity and nematode community in an integrated crop-livestock system, BP.TT

Abstract

The proposition of more sustainable agricultural systems has been a priority for Brazilian agriculture, in view of the exhaustion of the conventional cultivation model, the increase in the costs of chemical inputs and society's search for healthier foods. In this context, biologically-based agriculture has advanced as a model that grows in rural areas and has demanded new scientific studies. In agricultural areas with a predominance of sandy textured soils, low levels of organic matter and a history of monocultures such as pastures and sugar cane, there is a need for studies that seek to assess how new cropping systems can increase agricultural sustainability under these conditions. In this sense, the integration-crop-livestock system, with the cultivation of soybeans in the summer and pastures in the off-season, has gained prominence in recent years as a management strategy that achieves improvements in soil properties, with greater sustainability. However, some phytosanitary challenges have deserved greater care, such as the control of phytonematodes in soybean cultivation, as well as other soil pathogens. The investigation of the microbiome, in sandy textured soils, in crop-livestock integration systems, can reveal important changes in the composition of the microbial community in the soils. This can support new proposals for agricultural management in soybean growing areas, aiming to reduce costs with chemical inputs and increase crop yields, as well as support studies of environmental risks, such as the increase in antibiotic resistance, found in the bacterial community. It is assumed that pastures can harbor a diverse microbial community in their rhizosphere or endophytic form, and in integrated systems this microbiome can interact with other crops, such as soybeans, providing benefits such as the control of phytonematodes. In this sense, this project is justified by the need to generate unprecedented and important results regarding changes in the soil microbiome within the livestock farming integration system, implemented in sandy soils, which can assess agricultural and environmental impacts, by adopting this system. Establishing, in this context, the main objectives: to evaluate the composition, structure and diversity of the microbial community in the rhizosphere of soybean and Brachiaria, in succession in SILP and the potential of nematode suppression. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

ARAUJO, FABIO FERNANDO; SALVADOR, GABRIELA LOZANO OLIVERIO; LUPATINI, GELCI CARLOS; PEREIRA, ARTHUR PRUDENCIO DE ARAUJO; COSTA, ROMARIO MARTINS; DE AVIZ, RHAIANA OLIVEIRA; DE ALCANTARA NETO, FRANSCISCO; MENDES, LUCAS WILLIAM; ARAUJO, ADEMIR SERGIO FERREIRA. Exploring the diversity and composition of soil microbial communities in different soybean-maize management systems. MICROBIOLOGICAL RESEARCH, v. 274, p. 9-pg., 2023-06-16. (21/10823-0)

LIMA, B. C.; CRUZ, T. R.; RIBAS, A. F.; SANTOS, T. B.; CACEFO, V.; ARAUJO, F. F.. Gene expression and biochemical profiling in the mitigation of heat stress in common bean using Bacillus subtilis. Biologia Plantarum, v. 67, p. 11-pg., 2023-01-01. (17/16202-2, 21/10823-0)