©2023 International Society of Arboriculture Arboriculture & Urban Forestry 49(4): July 2023 159 Arboriculture & Urban Forestry 2023. 49(4):159–169 https://doi.org/10.48044/jauf.2023.015 Scientifi c Journal of the International Society of Arboriculture Infl uence of Different Protected Environments and Refl ector Material on Cultivated Oiti (Licania tomentosa [Benth.] Fritsch) Seedlings By Vitória Carolina Dantas Alves, Abimael Gomes da Silva, Edilson Costa, Thaise Dantas, Flávio Ferreira da Silva Binotti, Murilo Battistuzzi Martins, Eduardo Pradi Vendruscolo, and Gustavo Haralampidou da Costa Vieira characterization of fruits, seeds, and post-seminal development (Monteiro et al. 2012). In the production of seedlings of forest species, for the most part, structures covered with plastic fi lms and/or screens are used that provide some protection against solar radiation, rain, intense winds, and inter- ference from biotic factors such as pathogens and predators. These structures are called greenhouses, screenhouses, nurseries, or protected environments; they aim to improve the growing environment in order to produce plants with satisfactory biometric traits that will ensure adequate survival of the seed- lings once they have been transplanted to the fi nal place of cultivation (de Paula et al. 2017; Costa et al. 2020b; da Silva et al. 2021a). INTRODUCTION The species Licania tomentosa (Benth.) Fritsch, also known by the common name oiti or oitizeiro, is widely used in the ornamentation or afforestation of Brazilian cities (Alves et al. 2018; Lafetá et al. 2020) as well as in air quality monitoring (Maioli et al. 2008), wood production, and recovery of degraded areas. It is necessary to obtain high-quality seedlings for the various uses of this species. Studies on the seeds, emergence, and seedlings of this species are scarce in the literature. A few studies have been conducted on the use of compost and vermicompost from urban waste in substrates (Alves and Passoni 1997), the emergence of seedlings and the storage of endocarps (da Silva et al. 2018), and the morphological Abstract. Background: Oiti (Licania tomentosa [Benth.] Fritsch) is an option for urban forestation and rural environments that require shading by plants, so studying the plant environment to obtain quality seedlings is essential. The present study aimed to evaluate oiti seedlings in differ- ent protected environments with or without refl ective material on a cultivation bench. Methods: The following protected environments were evaluated: an agricultural greenhouse covered with a low-density polyethylene fi lm and a thermo-refl ective screen with 42%/50% shading under the fi lm; an agricultural screenhouse with an aluminized screen with 35% shading; an agricultural screenhouse with a black screen with 30% shading; and an agricultural screenhouse with a black screen with 18% shading. Production systems with and without photosynthetically active radiation-refl ecting material (aluminized screen, Aluminet®) on the cultivation bench were assessed in each protected environment. Results: There was no interaction between the environmental factors; however, the environments infl uenced height, stem diameter, root dry matter, and total biometric relationships and growth rates. The refl ective material did not improve the quality of oiti seedlings. The ratio of shoot and root dry matter was, on average, 71% for the shoots and 29% for the roots. The photosynthetically active radiation received by oiti seed- lings ranged from 600 to 1,100 µmol m−2 s−1. Conclusions: The greenhouse with 42%/50% shading screen under the fi lm and the black screen with 30% shading were the best environments for the formation of Licania tomentosa seedlings. The refl ective material on the cultivation bench did not result in better quality oiti seedlings. Keywords. Chrysobalanaceae; Greenhouse; Luminosity; Screenhouse.
July 2023
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