Bacterial community associated with the cultivation of maize fertilized with fermented compost and green manures, Cajanus cajan and Tephrosia sinapou, under different spatial arrangements

The inclusion of green manures in maize (corn) cultivation systems provides several benefits,mainly those related to the management of nitrogen-rich phytomass, which makes itpossible to reduce the use of nitrogen fertilizers for the subsequent crops. This studyaimed to characterize the bacterial community associated with maize fertilized with afermented bran compound and the fabaceous shrubs: pigeon pea (Cajanus cajan) andtephrosia (Tephrosia sinapou), cultivated in different spatial arrangements, underorganic management. The experimental design was in three randomized blocks,whose treatments were arranged in a factorial design of maize with two green manure plants (Cajanus cajan and Tephrosia sinapou) and three spatial arrangements (monoculture, intercropped with maize in the same row and intercropped with maize between rows). The rhizospheric microbiomes of maize and green manure plants were analyzed.Maize variety BRS Caatingueiro was sown at a spacing of 0.8 x 0.20 m between plants.After the plants had fully developed, rhizospheric soil samples were collected.Participants: Luc Felicianus Marie Rouws, Jhonatan Marins Goulart, Jose Guilherme Marinho Guerra, Norma Gouvea Rumjanek, Marcia Reed Coelhor, Gustavo Ribeiro Xavier, Ederson da Conceicao Jesus, Marcos Bacis Ceddia, Ednaldo da Silva Araujo e Luiz Augusto Aguiar.

在玉米（maize）栽培体系中纳入绿肥（green manure）可带来多重益处，核心益处与富氮植物量（nitrogen-rich phytomass）的管理相关，能够降低后续作物的氮肥施用量。本研究旨在解析有机管理模式下，施用发酵麸皮复合物的玉米，以及以不同空间配置种植的两种豆科灌木——木豆（*Cajanus cajan*）与灰毛豆（*Tephrosia sinapou*）——所关联的细菌群落（bacterial community）特征。本实验采用三重复随机区组（randomized block）设计，处理组采用因子设计（factorial design），涵盖玉米与两种绿肥作物的组合，以及三种空间配置模式：单作、与玉米同行间作、与玉米行间作。研究对玉米与绿肥作物的根际微生物组（rhizospheric microbiome）进行了分析。供试玉米品种为BRS Caatingueiro，种植株行距设置为0.8 m × 0.20 m。待供试作物充分生长后，采集根际土壤（rhizospheric soil）样品。参与研究人员：Luc Felicianus Marie Rouws、Jhonatan Marins Goulart、Jose Guilherme Marinho Guerra、Norma Gouvea Rumjanek、Marcia Reed Coelhor、Gustavo Ribeiro Xavier、Ederson da Conceicao Jesus、Marcos Bacis Ceddia、Ednaldo da Silva Araujo 与 Luiz Augusto Aguiar。