Transforming a home refrigerator into a BOD prototype for statice vernalization

Abstract Vernalization, natural or artificial, is a physiological requirement of some plants to meet the need for low temperatures for its complete development to occur. The objective of this article is to describe a protocol of transforming a domestic refrigerator into a BOD (Biochemical Oxygen Dem...

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Veröffentlicht in:Ornamental Horticulture (Campinas) 2021-12, Vol.27 (4), p.575-588
Hauptverfasser: Buffon, Paola Ana, Schwab, Natalia Teixeira, Streck, Nereu Augusto, Uhlmann, Lilian Osmari, Lima, Elton Ferreira, Marcks, Paulo, Tomiozzo, Regina
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Sprache:eng
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Zusammenfassung:Abstract Vernalization, natural or artificial, is a physiological requirement of some plants to meet the need for low temperatures for its complete development to occur. The objective of this article is to describe a protocol of transforming a domestic refrigerator into a BOD (Biochemical Oxygen Demand) prototype aimed at vernalizing propagating materials statice crop. The first step is to install a temperature controller to maintain a constant temperature inside the refrigerator (10 °C). Thinking of seedling vernalization, it is still necessary to install a system of lights inside the refrigerator. The control of the time that the lights remain on inside the prototype is carried out by installing a Timer adjusted so that the lights remained on, uninterruptedly, for 10 hours. To test the effective ness of the prototype, an on-farm experiment was carried out with the statice (Limonium sinuatum L.) crop at 5 locations in Rio Grande do Sul, Brazil. The seedlings were vernalized at an internal temperature of 10 °C and photoperiod of 10 hours for 3 weeks. The duration of this experiment was 8 months and at the end of this observed that statice plants were correctly vernalized because the plants emitted flower stems and showed satisfactory development throughout the growing cycle. Therefore, that the adaptation of a domestic refrigerator as a BOD economically viable and easy mounting prototype is possible. Being an excellent alternative to small producers. Resumo A vernalização, natural ou artificial, é uma exigência fisiológica de algumas espécies para suprir a necessidade por baixas temperaturas para que ocorra o seu completo desenvolvimento. O objetivo deste artigo é descrever um protocolo da transformação de uma geladeira doméstica em um protótipo de BOD (Biochemical Oxygen Demand) visando à vernalização de materiais propagativos da cultura da estatice. O primeiro passo consiste na instalação de um controlador de temperatura para que se mantenha uma temperatura constante no interior da geladeira (neste caso 10 °C). Pensando em vernalização de mudas, ainda é necessário à instalação de um sistema de luzes no interior da geladeira. O controle de tempo em que as luzes permanecem acesas no interior do protótipo é realizado através da instalação de um Timer ajustado para que as luzes permaneçam ligadas, ininterruptamente, por 10 horas. Para testar a eficácia do protótipo foi realizado um experimento on farm com a cultura da estatice (Limonium sinuatum L.) em 5 loc
ISSN:2447-536X
2447-536X
DOI:10.1590/2447-536x.v27i4.2401