EFFECT OF SOIL COMPACTION ON AERIAL AND ROOT GROWTH OF Tabebuia caraiba MART. BUR.

ARAUJO LUAN HENRIQUE BARBOSA DE¹, SILVA GUALTER GUENTHER COSTA DA², NOBREGA CAMILA COSTA DA³, OLIVEIRA ERMELINDA MARIA MOTA⁴, PIMENTA ALEXANDRE SANTOS⁵*
¹Agricultural Sciences Unit, Federal University of Rio Grande do Norte, Brazil
²Agricultural Sciences Unit, Federal University of Rio Grande do Norte, Brazil
³Agricultural Sciences Unit, Federal University of Rio Grande do Norte, Brazil
⁴Agricultural Sciences Unit, Federal University of Rio Grande do Norte, Brazil
⁵Agricultural Sciences Unit, Federal University of Rio Grande do Norte, Brazil
* Corresponding Author : aspimenta@ufrnet.br

Received : 21-02-2018     Accepted : 28-03-2018     Published : 30-03-2018
Volume : 10     Issue : 6       Pages : 5589 - 5592
Int J Agr Sci 10.6 (2018):5589-5592

Keywords : Root system, soil density, soil management
Academic Editor : Neyton Miranda
Conflict of Interest : None declared
Acknowledgements/Funding : Authors are thnakful to Agricultural Sciences Unit, Federal University of Rio Grande do Norte, Brazil
Author Contribution : All author equally contributed

Soil compaction is one of the main factors affecting forest productivity, hence research is necessary in order to identify species that are capable of breaking compacted layers. This study aimed to evaluate the initial aerial and root growth of Tabebuia caraiba in a soil sampleput through different levels of compaction. The experiment was carried out in a green house at the Federal University of Rio Grande do Norte (UFRN), Brazil. A sample of yellow Latosol with sandy texture was collected from the Agricultural School of Jundiaí and set in columns by using three overlapping 10-cm diameter and 25-cm height PVC rings, and the amount of soil in the central ring was compacted. A randomized complete block design with six replicates was used and four levels of soil compaction (1.35, 1.45, 1.60, and 1.80 kg.dm-³) were tested. The following variables were evaluated: diameter, height, number of leaves, and dry mass of aerial and root system in each layer of the columns. The physical impediment in subsurface did not alter the aerial growth of the seedlings. Compaction changed root system growth more significantly at soil densities greater than 1.60 kg.dm-3.

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