IMPACT OF GLYPHOSATE ON MICROBIAL ATTRIBUTES OF SOIL PLANTED WITH TWO SPECIES OF PASSION FRUIT

Authors

  • Erika Valente de Medeiros Universidade Federal Rural de Pernambuco, Unidade Acadêmica de Garanhuns
  • Krystal de Alcantara Notaro Universidade Federal Rural de Pernambuco, Unidade Acadêmica de Garanhuns
  • Cidney Barbosa Bezerra Universidade Federal Rural de Pernambuco, Unidade Acadêmica de Garanhuns
  • Antônio Ricardo Santos de de Andrade Universidade Federal Rural de Pernambuco, Unidade Acadêmica de Garanhuns
  • Gustavo Pereira Duda Universidade Federal Rural de Pernambuco, Unidade Acadêmica de Garanhuns

Keywords:

Passiflora alata. Passiflora edulis. Herbicide. Non-target organisms.

Abstract

Glyphosate is one of best known agrochemicals and is used to prevent the spread of weeds. However, little is known about the impact of this chemical on non-target organisms such as the soil microbial community. Therefore, the objective of this study was to evaluate the effect of glyphosate on the microorganism population and the microbial attributes of soils cultivated with yellow and sweet passion fruits. The experimental design used was complete randomized blocks in a 3 x 2 factorial scheme with the times of soil sample collection (0, 5 and 47 days after herbicide application- DAH) and the two species of passion fruit yellow (Passiflorae dulis f. flavicarpa O. Deg.) and sweet (Passiflora alata Dryand) as the factors,with three replications. No impact of the glyphosate herbicide was foundon the bacterial communities of soil. However, a mild and transitory impact was observedon the fungal populations, encouraging these populationsat 47 DHA. Glyphosate changed the carbon microbial biomass and soil microbial attributes, except for total organic carbon. Multivariate, principal component analysis revealed that the total bacteria, endospore-forming bacteria, total fungi, carbon microbial biomass and metabolic quotient attributes of soil are the most sensitive factors for predicting the impact of glyphosate on biological indicators of soil planted with two species of passion fruit yellow (P. edulis f. Flavicarpa) and sweet (P. alata).

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Author Biographies

Erika Valente de Medeiros, Universidade Federal Rural de Pernambuco, Unidade Acadêmica de Garanhuns

Professora Adjunta

Krystal de Alcantara Notaro, Universidade Federal Rural de Pernambuco, Unidade Acadêmica de Garanhuns

Mestre em Produção Agrícola

Cidney Barbosa Bezerra, Universidade Federal Rural de Pernambuco, Unidade Acadêmica de Garanhuns

Graduando em Agronomia

Antônio Ricardo Santos de de Andrade, Universidade Federal Rural de Pernambuco, Unidade Acadêmica de Garanhuns

Professor Adjunto

Gustavo Pereira Duda, Universidade Federal Rural de Pernambuco, Unidade Acadêmica de Garanhuns

Professor Associado

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Published

31-03-2014

Issue

Section

Agronomy