Citrus root distribution under water stress grown in sandy soil of central Florida
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Data
2012-12
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Resumo
The experiment was conducted in an orchard located in University of Florida (Citrus
Research and Education Center), Lake Alfred, Polk County, Florida, USA. The objective of this
study was to evaluate the effects of water stress in root distribution of ‘Valencia’ orange tree on
‘Swingle’ citrumelo rootstock. Three treatments were imposed on the trees: 1) normal irrigation
with microsprinklers, 2) no irrigation in winter (November through mid-March) and 3) rainfall
exclusion by placing a water repelling fabric (Tyvek) under the trees. Trees in treatments 1 and 2
received normal rainfall during the winter, but treatment 3 received no rain. Normal irrigation was
resumed on all treatments in mid March. Soil was collected using root auger head (0.09 m diameter
and height 0.25 m) in two opposing quadrants (West and East at 3 horizontal distances from tree
trunk (1, 2 and 3 m) and 4 depths (0.0-0.15; 0.15-0.30; 0.30-0.60 and 0.60-0.90 m). The results
from root sampling showed that there was a significant difference in root distribution between
irrigated treatment and non irrigated/non rainfall.
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Palavras-chave
Irrigation, Orange, Roots, Irrigação, Laranja, Raízes
Citação
ALVES JÚNIOR, José; BANDARANAYAKE, Wije; PARSONS, Larry R.; EVANGELISTA, Adão W. P. Citrus root distribution under water stress grown in sandy soil of central Florida. Engenharia Agrícola, Jaboticabal, v. 32, n. 6, p. 1109-1115, Nov./Dec. 2012.