Accumulation of macronutrients in cowpea and weeds in competition and under soil water deficit

  • Fernando Sarmento de Oliveira Universidade Federal Rural do Semi-Árido
  • Erivanessa Costa Sousa Sarmento
  • Jeferson Luiz Dallabona Dombroski Universidade Federal Rural do Semi-Árido
  • Daniel Valadão Silva Universidade Federal Rural do Semi-Árido
  • Claudia Daianny Melo Freitas
  • Matheus Freitas Souza Universidade Federal Rural do Semi-Árido
  • Maiara Pinheiro da Silva Borges
  • Lindomar Maria da Silveira
Keywords: Vigna unguiculata, Commelina benghalensis, Waltheria indica, Interference, Water stress, Mineral nutrition

Abstract

The ability of a plant species to succeed in colonization of agroecosystem depends on its efficiency in the use of growth resources even in deficient conditions. The present study aimed to evaluate the effects of competition and water deficit in the soil on the accumulation of macronutrients of Vigna unguiculata L. Walp., Commelina benghalensis L. and Waltheria indica L. The study was conducted in a greenhouse, in randomized block design, with four replications. The treatments were arranged in a 5 × 2 factorial, with the first factor corresponding to types of interaction among species (V. unguiculata + C. benghalensis; V. unguiculata + W. indica; V. unguiculata in monoculture, C. benghalensis in monoculture and W. indica in monoculture), and the second of water regimes (irrigated and water deficit). The water deficit differently affects macronutrient content on the species, with decreased of K, Ca and Mg in cowpea, and N, P, K and Ca in W. indica. For C. benghalensis, the water deficit does not reduce the macronutrient contents on the plant. The competition between plants intensifies the effects of water deficit only on C. benghalensis, with a decreased on the content of all macronutrients studied. Under irrigated conditions, competition between plants was more damaging the weeds compared to cowpea. The C. benghalensis specie, free from interference, has a high potential for nutrient extraction under irrigated and water deficit regimes.

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Author Biographies

Fernando Sarmento de Oliveira, Universidade Federal Rural do Semi-Árido

Doutorando em Fitotecnia, Centro de Ciências Vegetais/Departamento de Ciências Agronômicas e Florestais, Universidade Federal Rural do Semi- Árido, Mossoró-RN, e-mail: fernandosarmentho@hotmail.com

Erivanessa Costa Sousa Sarmento

Mestre em Fitotecnia, Centro de Ciências Vegetais/Departamento de Ciências Agronômicas e Florestais, Universidade Federal Rural do Semi-Árido/ Mossoró, RN, e-mail: vanessac.sousa@hotmail.com

Jeferson Luiz Dallabona Dombroski, Universidade Federal Rural do Semi-Árido

Professor, Centro de Ciências Agrárias/Departamento de Ciências Agronômicas e Florestais, Universidade Federal Rural do Semi-Árido, Mossoró-RN, e-mail: jeferson@ufersa.edu.br

Daniel Valadão Silva, Universidade Federal Rural do Semi-Árido

Professor, Centro de Ciências Agrárias/Departamento de Ciências Agronômicas e Florestais, Universidade Federal Rural do Semi-Árido, Mossoró-RN, e-mail: daniel.valadao@ufersa.edu.br

Claudia Daianny Melo Freitas

Mestre em Fitotecnia, Centro de Ciências Vegetais/Departamento de Ciências Agronômicas e Florestais, Universidade Federal Rural do Semi-Árido/ Mossoró, RN, e-mail: claudiamelof@hotmail.com

Matheus Freitas Souza, Universidade Federal Rural do Semi-Árido

Doutorando em Fitotecnia, Centro de Ciências Vegetais/Departamento de Ciências Agronômicas e Florestais, Universidade Federal Rural do Semi- Árido, Mossoró-RN, e-mail: matheus_mafs10@hotmail.com

Published
2019-10-16
How to Cite
Oliveira, F. S. de, Sousa Sarmento, E. C., Dombroski, J. L. D., Silva, D. V., Freitas, C. D. M., Souza, M. F., Borges, M. P. da S., & Silveira, L. M. da. (2019). Accumulation of macronutrients in cowpea and weeds in competition and under soil water deficit. Bioscience Journal - ISSN 1981-3163 , 35(6). https://doi.org/10.14393/BJ-v35n6a2019-42432
Section
Agricultural Sciences