Desempenho de morangueiro frente a diferentes espectros de radiação artificial complementar em cultivo sem solo

Abstract

The strawberry (Fragaria x ananassa) is characterized by its high added value for the area and for the high response the use of external inputs. Artificial radiation supplementary technique has been used in many countries, both for strawberry and other crops that have high added value. In Brazil to complement artificial radiation is already used tool in plant propagation, however there are few studies using radiation in crops. The strawberry plants physiologically respond differently according to the spectral range of the incident light and photosynthetically active which are subjected. The objective of this study was to evaluate the physiological behavior of strawberry submitted to artificial radiation complementary, using lamps with the issuance of photosynthetically active light in different spectral bands. The experiment was conducted at the Universidade Federal da Fronteira Sul, Campus Cerro Largo, on benches, sheltered by tunnels. The experimental design was completely randomized with five treatments and eight replicates per treatment. The emission of light in different spectral bands composed the treatments being used for this fluorescent bulbs white, blue, red, a combination of blue and red lamps, and without additional radiation witness. They were evaluated physiological development parameters, morphological and phonological. The different spectrums of light incident in strawberry have an effect on vegetative development. Treatment using blue and red, has a significant effect on the contents of chlorophyll a, induces increase in leaf area of the plant, with a higher early flowering. The light emitted in the red spectra, increase chlorophyll content however to delay full bloom.