252 results

CO2 emission affected by moisture content and aggregate sizes in a calcareous soil of Comarca Lagunera, Mexico

Santos Martínez-Santiago ORCID logo , Gerardo Sergio Benedicto-Valdés ORCID logo , Armando López-Santos ORCID logo , Hilda Victoria Silva-Rojas ORCID logo , Enrique Ojeda-Trejo ORCID logo , Elsa Marcela Ramírez-López ORCID logo

14/mar/2022

ABSTRACT Soil CO2 emissions are formed from biotic and abiotic processes related to organic carbon (SOC) and inorganic carbon (SIC), respectively. Calcareous soil has a high amount of SIC and occurs mainly in arid areas, and little is known about CO2 emissions from aggregates of this soil. This study aims to evaluate the emission of CO2 of aggregates from calcareous soil in the Comarca Lagunera, Mexico. Soil samples were taken from the layers of 0.00-0.15 and 0.15-0.30 m, and soil […]

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Effects of Meloidogyne incognita on the fungal community in tobacco rhizosphere

Chen Xiaolong ORCID logo , Gao Lingling ORCID logo , Deng Xiaopeng ORCID logo , Yang Yongfeng ORCID logo , Wang Jianwei ORCID logo , Zhang Zhan ORCID logo , [...]

04/mar/2022

ABSTRACT The often widespread and serious Root-Knot Nematode (RKN) disease is an important soil-borne disease affecting tobacco production. This study aimed to understand micro-ecological changes caused by RKN disease and interactions between disease and rhizosphere soil fungal communities. The 18S rRNA gene sequencing was used to study changes in rhizosphere fungal community of tobacco plants having RKN disease. In June 2018, a paired comparison was performed between rhizosphere fungal community structures of healthy tobacco plants and those with RKN disease […]

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Best tillage practices for eucalyptus growth and productivity: A review on the Brazilian experience

Kristiana Fiorentin dos Santos ORCID logo , José Miguel Reichert ORCID logo

02/fev/2022

ABSTRACT Commercial eucalyptus forestry has significantly increased in the last decades to supply the growing demand for forest goods (pulp, paper, sawmill, by-product industries, and biomass for bioenergy and biofuels). Among factors most influencing forest productivity, the soil physical environment is very important and can be harmful or beneficial to trees. In the effort to increase environmental and economic sustainability of commercial plantations, in this literature review, we summarize relationships between soil type and properties, forest rotation, and forest growth […]

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Soil-plant-microbiota interactions to enhance plant growth

Camila Gazolla Volpiano ORCID logo , Bruno Britto Lisboa ORCID logo , Jackson Freitas Brilhante de São José ORCID logo , Anelise Beneduzi ORCID logo , Camille Eichelberger Granada ORCID logo , Luciano Kayser Vargas ORCID logo

28/jan/2022

ABSTRACT The nature of the soil is shaped by the presence of roots and the soil microbiota. Bacteria, archaea and fungi profoundly alter plant growth and, in turn, depend on root exudation of carbon-rich and energy-yielding compounds. The microbial communities act as facilitators of plant processes by secreting plant growth regulators, solubilizing minerals, providing N for plant growth, altering plant immune responses and competing with plant pathogens. Characterizing and engineering the processes driven by the multiple microbial taxa that make […]

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Soil physical change and sugarcane stalk yield induced by cover crop and soil tillage

Camila Viana Vieira Farhate ORCID logo , Zigomar Menezes de Souza ORCID logo , Maurício Roberto Cherubin ORCID logo , Lenon Henrique Lovera ORCID logo , Ingrid Nehmi de Oliveira ORCID logo , Wellingthon da Silva Guimarães Júnnyor ORCID logo , [...]

28/jan/2022

ABSTRACT Conventional tillage and intensive machinery traffic are the major causes of physical soil degradation in sugarcane fields. This study evaluates the impact of adopting conservation management practices during sugarcane planting on soil physical properties and stalk yield of sugarcane in the municipality of Ibitinga, state of São Paulo, Brazil. The experimental design (split-block) included four cover crops and three soil tillage systems, with three repetitions. For comparison purposes, a control treatment was also included (without cover crop and under […]

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Brazilian scenario of inoculant production: A look at patents

Augusto Matias de Oliveira ORCID logo , Márcia Regina da Costa ORCID logo , Paulo Henrique Grazziotti ORCID logo , Caique Menezes de Abreu ORCID logo , Nicarla da Silva Bispo ORCID logo , Juan Pedro Bretas Roa ORCID logo , [...]

10/jan/2022

ABSTRACT Technological advances have demonstrated the need for intellectual property rights, and patent granting is one of its most widespread forms. This includes the protection of inoculant formulations for agriculture, in which Brazil is a leader. This study aimed to analyze the number of patents for formulations of biological inoculants for agriculture in Brazil and the microorganisms used. An advanced search was performed in the National Institute of Industrial Property database, using the title and abstract fields. The indexers included […]

Interplays between Atta ants (Formicidae: Attini), soils and environmental properties in the Brazilian Neotropics: a preliminary assessment

Carlos Ernesto Gonçalves Reynaud Schaefer ORCID logo , Renata Jordan Henriques ORCID logo , Lhoraynne Pereira Gomes ORCID logo , Rodrigo Gomes Gorsani ORCID logo , Michel Filiphy Silva Santos ORCID logo , Daniela Pinto de Souza Fernandes ORCID logo

30/nov/2021

ABSTRACT Leaf-cutting ants are the most important herbivore in the neotropics, represent active agents of pedobioturbation, and are regarded as ecosystem engineers. These ants have a wide variety of ecological functions, such as pollination, seed dispersal, and tree-growing control. Despite this importance, little is known on their distribution in relation to possible soil and environmental conditions that affect Atta ants occurrence. This study aimed to spatialize the main occurrences of Atta species in the Brazilian territory and evaluate the main […]

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Contribution of enzymes to soil quality and the evolution of research in Brazil

Lisiane Sobucki ORCID logo , Rodrigo Ferraz Ramos ORCID logo , Leonardo Arocha Meireles ORCID logo , Zaida Inês Antoniolli ORCID logo , Rodrigo Josemar Seminoti Jacques ORCID logo

30/nov/2021

ABSTRACT Extracellular soil enzymes are fundamental for the functioning of ecosystems. Several processes in the soil depend on the activity of these enzymes, including plant decomposition, soil organic matter formation/mineralization, and nutrient cycling. Moreover, extracellular enzyme activity occurs in the soil and is therefore influenced by environmental factors. Due to the high sensitivity to these factors, extracellular enzymes are used for monitoring soil quality. This review aimed to present the main contributions of soil enzymes to agriculture, emphasizing the dynamics […]

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Use of nuclear techniques in soil science: A literature review of the Brazilian contribution

Luiz Fernando Pires ORCID logo , Fábio Augusto Meira Cássaro ORCID logo , Vladia Correchel ORCID logo

24/nov/2021

ABSTRACT This review presents the basic research and some applications of the gamma-ray attenuation, neutron gauges, and 137Cs fallout techniques for studying soil physical processes and properties. The selected studies aimed to give the readers a general idea of the use of these nuclear techniques carried out by Brazilian researchers in the past decades. It is expected to assist future researchers by identifying knowledge gaps and opportunities for applying the methods presented here. Around 100 studies were selected for this […]

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Hierarchical feedbacks of vegetation and soil carbon pools to climate constraints in Brazilian ecosystems

Ivan Francisco de Souza ORCID logo , Lucas de Carvalho Gomes ORCID logo , Elpídio Inácio Fernandes Filho ORCID logo , Ivo Ribeiro da Silva ORCID logo

24/nov/2021

ABSTRACT: It remains unclear whether temperature and precipitation exert independent control on tropical vegetation and soil C pools. Likewise, it is unknown whether the feedbacks of tropical C pools to climate constraints vary with nutrient availability. These aspects are critical to improving our ability to predict the response of tropical C pools to climate dynamics. This review aimed to assess climate data and the spatial distribution of vegetation and soil C pools across the Brazilian territory to investigate i) whether […]

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