African Mahogany responses cultivated without water restriction to Goiânia-GO micrometeorological conditions

  • Derblai Casaroli Federal University of Goias
  • Gislene Pinheiro da Silva Federal University of Goias
  • Lucas Melo Vellame Federal University of Bahia Reconcavo
  • José Alves Júnior Federal University of Goias
  • Adão Wagner Pêgo Evangelista Federal University of Goias
  • Pedro Henrique de Souza Federal University of Goias

Abstract

African Mahogany (Khaya ivorensis A. Chev.) planting is spreading in Brazil as to re-forest as to obtain hardwood. This work aimed to evaluate the growing of young African Mahogany plants to micrometeorological conditions of Goiânia-GO, without water restriction. Experiments were carried out in greenhouse (pots) and lysimeters. In greenhouse, number of leaves and leaf area showed an increase in its averages until 120 days after the first evaluation (DA1ª), tending to stabilize, however, number of leaflets, plants height and steam diameter have an increasing trend until the last evaluation. The greatest rates ware to 30 DA1ª, except to plants height rates (46 DA1ª) and leaf area (59 DA1ª). In lysimeters, the greatest rates to plants height, steam diameter and leaf area were observed after 75 DA1ª. The greatest water use per leaf area per day (ke day-1) was also determined to 35 DA1ª (1.863 L m-2 day-1). Growth variables showed positive and significant correlations with solar radiation (RG) and the total water consumption per period, and negative with the wind speed (v) and ET0 (Penman-Monteith). The ke day-1 had positive and significant correlation with RG, v, vapor pressure deficit (VPD), evaporation of the Class-A pan (ECA) and ET0, and negative for air relative humidity (RH%). It was concluded that the growth of young African Mahogany plants, without water restriction, suffer influence of micrometeorological variables of Goiânia-GO, Brazil, however, this response were smoothed due to the plants are in ideal conditions as in terms of water necessity as climatic requeriment.

Keywords: evapotranspiration, growth rate, Khaya ivorensis A. Chev., Brasilian Savanna

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Author Biographies

Derblai Casaroli, Federal University of Goias
graduate at Agronomia from Federal University of Santa Maria (2002), master's at Plant Production from Federal University of  Santa Maria (2005) and Dr. at Agricultural Environmental Physics from University of Sao Paulo (2008). Has experience in Agronomy, acting on the following subjects: Enviromental Physics, plant physiological and ecology, and water stress
Gislene Pinheiro da Silva, Federal University of Goias
PROCON Scholarship of 2010-2014, working in the forestry area, Management and Production Forest Ecology. TCC argued in the area of Agrometeorology
Lucas Melo Vellame, Federal University of Bahia Reconcavo
Associate professor at the Federal University of Bahia Reconcavo. Graduated in Agronomic Engineering from the Federal University of Bahia (2005), master's degree in Agricultural Sciences from the Federal University of Bahia Reconcavo (2007) and a PhD in Irrigation and Drainage from the University of São Paulo (2010). He has experience in Agricultural Engineering with emphasis on Irrigation and Drainage, acting on the following topics: irrigation, sap flow, agricultural instrumentation
José Alves Júnior, Federal University of Goias
bachelor's at Agronomy - Agronomia from São Paulo State University - State University Paulista - Ilha Solteira (2001) and doctorate at Irrigation and Drainage - Irrigação e Drenagem from São Paulo University - University of São Paulo - ESALQ (2006). He is currently professor (permanent position) at Federal University of Goiás. Has experience in Agronomy, focusing on Agronomy, acting on the following subjects: irrigation, water management, and water stress
Adão Wagner Pêgo Evangelista, Federal University of Goias
graduate at Agricultural Engineering from Universidade Federal de Lavras (1989), master's at Agricultural Engineering from Universidade Federal de Lavras (1999) and ph.d. at Agricultural Engineering from Universidade Federal de Viçosa (2003). Has experience in Agricultural Engineering, focusing on Agricultural Engineering, acting on the following subjects: irrigation management, fertilization, coffe and agricultural drainage
Pedro Henrique de Souza, Federal University of Goias
Graduating student in agronomy in Federal University of Goias. Scholarship by PIBIC/CNPq

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Published
2016-08-01
Issue
Vol 59 No 1 (2016): RCA
Section
Scientific Articles

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