Balanço hídrico do solo em diferentes densidades de Pinus taeda no Sul do Brasil

Translated title of the contribution: Soil water balance in different densities of Pinus taeda in Southern Brazil

Jorge Luiz Moretti de Souza, Kharyn Freitas Fezer, Bruno César Gurski, Daniela Jerszurki, Paulo Eugênio Pachechenik

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

This study aimed to quantify and compare water balance components over the course of a year for different Pinus taeda planting densities in an oxisol in southern Brazil. This experiment was conducted on 6-year-old trees in a clay oxisol at the Monte Alegre Farm, a property of the Klabin Company. The experimental design was a randomized block with four replicates and five treatments with different amounts of soil coverage: T100 (100% coverage - standard planting coverage); (T75, 75; T50, 50; and T25, 25%), and; T0 (without cover - clearcutting). The soil water storage and actual evapotranspiration under non-standard conditions were determined in a weekly estimated soil water balance (SWB) with measured components. By the end of the year, the treatments had not reached field capacity or wilting point storage. The average value of total downward drainage was 100.2 mm, and the highest values occurred in the T75 and T100 treatments. The lowest population density (T25) had the highest actual evapotranspiration (ETr), due to the growth of the remaining Pinus taeda trees. The highest evapotranspiration occurred in September, due to the resumption of Pinus taeda growth.

Translated title of the contributionSoil water balance in different densities of Pinus taeda in Southern Brazil
Original languagePortuguese
Pages (from-to)265-271
Number of pages7
JournalActa Scientiarum - Agronomy
Volume38
Issue number2
DOIs
StatePublished - 1 Apr 2016
Externally publishedYes

Keywords

  • Exotic forest
  • Hydric consumption
  • Hydric relations
  • Soil water storage
  • Spacing

ASJC Scopus subject areas

  • Agronomy and Crop Science

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