Spatial distribution of physical attributes of an Ultisol under papaya crop

  • Juliao Soares de Souza Lima Universidade Federal do Espírito Santo, Centro de Ciências Agrárias, Departamento de Engenharia Rural
  • Walas Permanhane Sturião Universidade Federal de Viçosa, doutorando em Fitotecnia.
  • Ivoney Gontijo CEUNES da UFES
  • Samuel Assis Silva
Keywords: geostatistic, soil bulk density, spatial variability

Abstract

The successful development of the root system of plants depends on the favorable conditions of soil physical attributes. The objective of this work was to study the spatial variability of physical attributes in an Ultisol cultivated with papaya. The soil was prepared mechanically plowing, harrowing, sulcal and subsoiler. In the center of the crop field was built a sampling grid with points spaced 5.7 m, totalizando129 georeferenced points. The soil samples at two depths (0 - 0.20 m, 0.20 - 0.40 m) were collected for four months after transplantation, to determine the total porosity (TP), soil moisture (Um), soil bulk density (BD) and soil penetration resistance in the planting row (PRPR) and in the traffic machines rows (PRRow). The soil penetration resistance in the planting row and in the traffic machines row was determined. The BD1 and BD2 showed the lowest CV values, and the data were fitted to the exponential and spherical models, respectively, with spatial dependence ranges of 20 and 28 m. At the layer of 0-0.20 m depth, the attributes showed the same spatial distribution pattern. At the layer of 0-0.20 m depth, the soil penetration resistance showed 7.5 times greater in the traffic machines region (rw spacing) than the value found in the planting row.

Downloads

Download data is not yet available.

Author Biographies

Juliao Soares de Souza Lima, Universidade Federal do Espírito Santo, Centro de Ciências Agrárias, Departamento de Engenharia Rural
Engenheiro Agrícola, Mestre em Engenharia Agrícola pela UNICAMP e Doutor pela UFV. prof. Titular, atua na área de máquinas e mecanização agrícola na graduação. No programa de Pós-Graduação em Produção Vegetal e Ciências Florestais ministra a disciplina Geoestatistica Aplicada.
Walas Permanhane Sturião, Universidade Federal de Viçosa, doutorando em Fitotecnia.
Eng. Agronomo (Unifenas, Mestre em produção Vegetal (UFES) e doutorando em Fitotecnia (UFV).
Ivoney Gontijo, CEUNES da UFES
Eng. Agronomo (UFU), prof. Adjunto II do CEUNES da Universidade Federal do Espirito Santo (UFES)
Samuel Assis Silva
Eng. Agronomo (UFES), doutor em Eng. Agrícola (UFV), prof. Adjunto i do departamento de Eng. Rural do CCA (UFES)
Published
12-04-2018
How to Cite
Lima, J. S. de S., Sturião, W. P., Gontijo, I., & Silva, S. A. (2018). Spatial distribution of physical attributes of an Ultisol under papaya crop. Comunicata Scientiae, 8(4), 526-536. https://doi.org/10.14295/cs.v8i4.1669
Section
Original Article