Volume 47, 2023
Inoculation effects of growthpromoting bacteria on corn root architecture: influence of nitrogen levels, bacterial populations, and plant genotypes
Albiane Carvalho Dias 
, Gabriela Cavalcanti Alves , Thamires Ferreira Rodrigues da Silva , Veronica Massena Reis
07/Dec/2023
ABSTRACT Inoculating corn with diazotrophic bacteria as growth promoters has been demonstrated to be an efficient agricultural practice in Brazil, mainly due to the root stimulation they provide to plants. This study investigates the corn (Zea mays L.) root architecture in a greenhouse assay where A. baldaniorum Sp245 and H. seropedicae ZAE94 strains were inoculated and evaluated for 22 days under two N levels: 0.6 and 6 mmol L-1 of N. Short-term bioassays were conducted to assess the plant’s response […]
Estimation of soil organic carbon content by Vis-NIR spectroscopy combining feature selection algorithm and local regression method
Baoyang Liu , Baofeng Guo , Renxiong Zhuo , Fan Dai
07/Dec/2023
ABSTRACT Soil organic carbon (SOC) content is a critical parameter for evaluating soil health. However, high redundancy and invalid information in soil hyperspectral data can reduce the accuracy and stability of SOC prediction models. This study developed a global partial least squares regression (PLSR) model and a local PLSR model for agricultural soils in the LUCAS 2015 database. Some variable selection methods were combined with the regression models and their effects on prediction accuracy were explored. In addition, when the […]
Edaphic properties in a eucalyptusforest ecotone in the Nova Baden State Park, Southeastern Brazil
Ariovaldo Machado Fonseca Júnior , Luiz Alberto Silva Rodrigues Pinto , Cristiane Figueira da Silva , Robert Ferreira , Igor de Sousa Morais , Rodrigo Camara , [...]
07/Dec/2023
ABSTRACT State parks are integral protection units created to protect ecosystems. However, anthropic activities may have been previously performed before their creation, forming transitional areas. Studies that evaluate the modifications of edaphic properties in these environments are scarce. The aim of this study was to evaluate the changes in soil properties and litter stock in areas of eucalyptus-forest ecotones. Litter stock (Stocklitter) and total soil organic carbon content and stock (TOCsoil), weighted mean diameter (MWD), origin of aggregates (biogenic or […]
