Abstract
Intensity and spectral quality of the radiation can be manipulated with the use of neutral or color shading screens in growing plants, and it can promote physiological and morphological changes. Therefore, the purpose was evaluating the effects of different shading levels, screens spectral quality, and spacing in the development of cv. Jungle King and cv. Jungle Queen gingers. Rhizomes were planted in 5 cultivation environments (full sun, black screen 50%, black screen 30%, blue screen 50% and red screen 50% shading) and 2 spacing (0.8 x 1.0 m and 0.8 x 1.5 m). The experimental design was completely randomized in a factorial 5x2x2x7, with 5 environments of cultivation, 2 cultivars, 2 spacing between plants and 7 times of evaluation (55, 120, 200, 255, 285, 335 e 370 days after planting (DAP)). The evaluations were shooting index, number of shoots per plant, shoot height and number of leaves per shoot. Shooting of cv. Jungle Queen was earlier compared to cv. Jungle King. Spacing did not influence in the initial development of plants. Screens with 50% shading, in blue or red colors, enhanced alpinia development.
Highlights
spectral quality of the radiation can be manipulated with the use
the purpose was evaluating the effects of different shading levels
Rhizomes were planted in 5 cultivation environments
Summary
Dentre as espécies de flores tropicais, a alpínia (Alpinia purpurata) se destaca devido ao grande potencial produtivo, no entanto não há informações precisas sobre condições de cultivo em algumas regiões, sobretudo aquelas mais promissoras (LANDGRAF e PAIVA, 2009a, LANDGRAD e PAIVA, 2009b). A manipulação das propriedades da radiação pode ser realizada com uso de malhas neutras ou fotoconversoras, em diferentes níveis de sombreamento (KITTAS et al, 1999). As malhas fotoconversoras combinam proteção física e filtragem diferencial da radiação, em que a intensidade e a qualidade espectral transmitida são alteradas, com mudanças ópticas da dispersão e reflectância (OREN-SHAMIR et al, 2001; SHAHAK et al, 2004). O plantio mais adensado tende a aumentar a produção de hastes, no entanto, o tamanho dessas pode não atingir o padrão comercial. O plantio mais espaçado promove a produção de hastes de melhor qualidade, pois as plantas possuem maior disponibilidade de espaço, água e nutrientes para o seu desenvolvimento. Objetivou-se avaliar os efeitos de diferentes níveis de sombreamento, qualidade espectral de malhas e espaçamentos no desenvolvimento de alpínias cv.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
