VERMICOMPOST APPLICATION IMPROVING SEMIARID-GROWN CORN GREEN EAR AND GRAIN YIELDS

Authors

  • Paulo Sérgio Lima e Silva Department of Plant Science, Universidade Federal Rural do Semi-Árido, Mossoró, RN
  • Paulo Igor Barbosa e Silva Department of Plant Science, Universidade Federal Rural do Semi-Árido, Mossoró, RN
  • Vianney Reinaldo de Oliveira Department of Plant Science, Universidade Federal Rural do Semi-Árido, Mossoró, RN
  • Fábio Henrique Tavares de Oliveira Department of Environmental and Technological Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN
  • Lucas Ramos da Costa Department of Plant Science, Universidade Federal Rural do Semi-Árido, Mossoró, RN

DOI:

https://doi.org/10.1590/1983-21252017v30n302rc

Keywords:

Humus. Earthworm. Zea mays. Eisenia fetida. Cultivars.

Abstract

Intensive corn farming quickly depletes soil organic matter in the nutrient-poor soils of the Brazilian semiarid region. Application of vermicompost, an excellent organic fertilizer, could help solve that problem. This study evaluated the effect of applying Eisenia fetida vermicompost in the seeding furrows, at 0, 2, 4, 6, 8, and 10 Mg.ha-1 application rates, on the green ear yield and grain yield of two corn cultivars. Treatments were replicated five times with split-plots (vermicompost application rates within plots) in a completely randomized block design. The number of mature ears, number of kernels per ear (cultivar BR 106), and 100-kernel weight (cultivar AG 1051) were not affected by vermicompost application rate. However, vermicompost application increased total number and weight of unhusked and husked marketable green ears as well as grain yield. Total number of green ears was higher in cultivar BR 106 than in cultivar AG 1051. Conversely, grain yield and total ear weight and marketable weight of unhusked and husked green ears was higher in cultivar AG 1051, but responses in the latter two traits were dose-dependent.

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Author Biographies

Paulo Sérgio Lima e Silva, Department of Plant Science, Universidade Federal Rural do Semi-Árido, Mossoró, RN

Departamento de Ciências Vegetais (DCV)

Paulo Igor Barbosa e Silva, Department of Plant Science, Universidade Federal Rural do Semi-Árido, Mossoró, RN

DCV

Vianney Reinaldo de Oliveira, Department of Plant Science, Universidade Federal Rural do Semi-Árido, Mossoró, RN

DCV

Fábio Henrique Tavares de Oliveira, Department of Environmental and Technological Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN

DCAN

Lucas Ramos da Costa, Department of Plant Science, Universidade Federal Rural do Semi-Árido, Mossoró, RN

DCAN

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Published

21-03-2017

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Section

Agronomy