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Idesia (Arica)

On-line version ISSN 0718-3429

Abstract

SESSA FIALHO, Gustavo et al. BEHAVIOR  OF  COFFEA ARABICA  L.  PLANTS EXPOSED  TO  WATER  DEFICITS  IN DIFFERENT  PHASES OF THEIR  INITIAL DEVELOPMENT. Idesia [online]. 2010, vol.28, n.3, pp.35-39. ISSN 0718-3429.  http://dx.doi.org/10.4067/S0718-34292010000300005.

The objective of this work was to study the influence of water deficits on the initial development of a coffee field, applied at different times: 30, 60, 90 and 120 days after transplanting. The experiment was conducted in a greenhouse, with a completely randomized design, with five treatments and three repetitions. Treatments consisted of submission of transplanted seedlings to water deficits of fixed duration of 30 days, with D0 = without water deficit, D1 = plants submitted to water deficits between 30 and 60 days after transplanting, D2 = plants submitted to water deficits between 60 and 90 days after transplanting, D3 = plants submitted to water deficits between 90 and 120 days after transplanting and, D4 = plants submitted to water deficits between 120 and 150 days after transplanting. At 180 days after transplanting we evaluated aerial and root system dry mater, leaf area, canopy diameter, and plant height. The effect of water deficit was especially important on the variables studied when applied 30, 60 or 90 days after transplanting and did not significantly influence the variables leaf area, canopy diameter, and plant height, when applied 120 days after transplanting.

Keywords : Water stress; arabica coffee; irrigated coffee production.

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