Artigo

Effect of sequential nicosulfuron and chlorpyrifos application on seed bank and soil microbial characteristics

In the period of competition of weeds and the incidence of fall armyworm in the corn crop there is a need for herbicide and insecticide such as nicosulfuron and chlorpyrifos application within short time intervals. The aim of this study was to evaluate the effect of sequential applications of nicosu...

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Autor principal: Oliveira, Taciane Almeida de
Outros Autores: Santos, J. B., Camelo, Gessimar Nunes, Botelho, Rafael Grossi, Lázari, Thiago Magalhães de
Grau: Artigo
Idioma: pt_BR
Publicado em: Revista Brasileira de Ciencia do Solo 2020
Assuntos:
Commelina
Commelina Benghalensis
Spodoptera Frugiperda
Zea Mays
Acesso em linha: https://repositorio.inpa.gov.br/handle/1/18438
id oai:repositorio:1-18438
recordtype dspace
spelling oai:repositorio:1-18438 Effect of sequential nicosulfuron and chlorpyrifos application on seed bank and soil microbial characteristics Efeito da interação do nicosulfuron e chlorpyrifos sobre o banco de sementes e os atributos microbianos do solo Oliveira, Taciane Almeida de Santos, J. B. Camelo, Gessimar Nunes Botelho, Rafael Grossi Lázari, Thiago Magalhães de Commelina Commelina Benghalensis Spodoptera Frugiperda Zea Mays In the period of competition of weeds and the incidence of fall armyworm in the corn crop there is a need for herbicide and insecticide such as nicosulfuron and chlorpyrifos application within short time intervals. The aim of this study was to evaluate the effect of sequential applications of nicosulfuron and chlorpyrifos on the emergence of seedlings of the seed bank in the soil, the basal CO2 emission rate, and the microbial biomass carbon (MBC) of soil. Sequential applications of nicosulfuron (doses from 0 to 64 g ha-1) with or without chlorpyrifos (0 and 240 g ha-1) were performed. At 20, 40 and 60 days after application (DAA) of the products, the species of all seedlings that emerged from the seed bank were identified, and the frequency, density and abundance estimated, as well as the importance value IV. Sixty DAA the CO2 emission rate and CBM were were also determined, and based on the relationship between the accumulated CO2 and total soil MBC the metabolic coefficient (qCO2) was estimated. The application of nicosulfuron rates of over 20 g ha-1 severely affected the seedling dry weight and number of species. In the presence of the herbicide, the species with highest IV were Boehavia diffusa and Commelina bengalensis. There was a decrease in the basal soil respiration rate with increasing nicosulfuron doses, in the presence as well as in the absence of the insecticide chlorpyrifos. There was a linear decrease in MBC in all cases regardless of the chlorpyrifos application, although the reduction was 4.5 times greater in soil that received the combined application of the insecticide and nicosulfuron. The qCO2 confirmed the negative effect of the application of insecticide and herbicide. It was concluded that the application of chlorpyrifos + nicosulfuron causes a negative impact on the seeds in the soil and the soil microbial activity. 2020-06-15T21:55:01Z 2020-06-15T21:55:01Z 2009 Artigo https://repositorio.inpa.gov.br/handle/1/18438 pt_BR Volume 33, Número 3, Pags. 563-570 Restrito Revista Brasileira de Ciencia do Solo
institution Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection INPA-RI
language pt_BR
topic Commelina
Commelina Benghalensis
Spodoptera Frugiperda
Zea Mays
spellingShingle Commelina
Commelina Benghalensis
Spodoptera Frugiperda
Zea Mays
Oliveira, Taciane Almeida de
Effect of sequential nicosulfuron and chlorpyrifos application on seed bank and soil microbial characteristics
topic_facet Commelina
Commelina Benghalensis
Spodoptera Frugiperda
Zea Mays
description In the period of competition of weeds and the incidence of fall armyworm in the corn crop there is a need for herbicide and insecticide such as nicosulfuron and chlorpyrifos application within short time intervals. The aim of this study was to evaluate the effect of sequential applications of nicosulfuron and chlorpyrifos on the emergence of seedlings of the seed bank in the soil, the basal CO2 emission rate, and the microbial biomass carbon (MBC) of soil. Sequential applications of nicosulfuron (doses from 0 to 64 g ha-1) with or without chlorpyrifos (0 and 240 g ha-1) were performed. At 20, 40 and 60 days after application (DAA) of the products, the species of all seedlings that emerged from the seed bank were identified, and the frequency, density and abundance estimated, as well as the importance value IV. Sixty DAA the CO2 emission rate and CBM were were also determined, and based on the relationship between the accumulated CO2 and total soil MBC the metabolic coefficient (qCO2) was estimated. The application of nicosulfuron rates of over 20 g ha-1 severely affected the seedling dry weight and number of species. In the presence of the herbicide, the species with highest IV were Boehavia diffusa and Commelina bengalensis. There was a decrease in the basal soil respiration rate with increasing nicosulfuron doses, in the presence as well as in the absence of the insecticide chlorpyrifos. There was a linear decrease in MBC in all cases regardless of the chlorpyrifos application, although the reduction was 4.5 times greater in soil that received the combined application of the insecticide and nicosulfuron. The qCO2 confirmed the negative effect of the application of insecticide and herbicide. It was concluded that the application of chlorpyrifos + nicosulfuron causes a negative impact on the seeds in the soil and the soil microbial activity.
format Artigo
author Oliveira, Taciane Almeida de
author2 Santos, J. B.
Camelo, Gessimar Nunes
Botelho, Rafael Grossi
Lázari, Thiago Magalhães de
author2Str Santos, J. B.
Camelo, Gessimar Nunes
Botelho, Rafael Grossi
Lázari, Thiago Magalhães de
title Effect of sequential nicosulfuron and chlorpyrifos application on seed bank and soil microbial characteristics
title_short Effect of sequential nicosulfuron and chlorpyrifos application on seed bank and soil microbial characteristics
title_full Effect of sequential nicosulfuron and chlorpyrifos application on seed bank and soil microbial characteristics
title_fullStr Effect of sequential nicosulfuron and chlorpyrifos application on seed bank and soil microbial characteristics
title_full_unstemmed Effect of sequential nicosulfuron and chlorpyrifos application on seed bank and soil microbial characteristics
title_sort effect of sequential nicosulfuron and chlorpyrifos application on seed bank and soil microbial characteristics
publisher Revista Brasileira de Ciencia do Solo
publishDate 2020
url https://repositorio.inpa.gov.br/handle/1/18438
_version_ 1787143562199040000
score 11.755432

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