Aclimatização de mudas de cana-de-açúcar em ambiente protegido sob dois tipos de malha de sombreamento

Abstract

Based on the fact that the sugar-alcohol sector is a growing activity, driven by investments in production technology, the State of Pernambuco has excelled in this scenario, as the use of technique of in vitro propagation. Accordingly, this work sought to analyze the microclimate and evaluate the growth and development of sugarcane seedlings in acclimatization under two types of roofs in protected environment. The survey was conducted by the experimental area of Usina São José, in the municipality of Igarassú-PE, latitude of 7° 48' 37.32 "S, longitude 34° 59' 49.23"O and height of 34 m. The protected environment was covered with milky plastic and divided into two environments, an associated shading mesh termorreflective (TA) and the other associated with black shading mesh (TB). The variables studied were: meteorological variables (solar radiation, air temperature, relative humidity) and crop variables (stem length, diameter of the stem, leaf length, number of leaves, plant height and leaf area). 12 trays with 108 tubes each, were employed both for TA and TB, being randomly chosen for the biometric monitoring 4 tubes. The experimental design used was entirely casualized (DIC) and Tukey test (p<0.05) for comparing the averages. The production environment under TA provided the best biometric results of development of seedlings from sugarcane, as a result of the greater availability of solar radiation in the production environment.