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- Title
Desenvolvimento inicial de mudas de caroba sob influência de sombreamento.
- Authors
de FREITAS, Gilson Araújo; da SILVA, Rubens Ribeiro; de FARIA, Álvaro José Gomes; da Silva CARNEIRO, Jefferson Santana; dos SANTOS, Antônio Carlos Martins
- Abstract
Due to the devastation of cerrado areas, native species are threatened with extinction. In this sense, studies on the light requirement in the early stages of tree species become necessary. The present work had as objective to evaluate the initial development of Jacaranda brasiliana seedlings at different levels of shading. The experiment was conducted in a randomized complete block design with three levels of shading and 15 replicates. At the end of the 50 days after emergence, the seedlings were submitted to shade levels: full sun, 50% artificial shading and natural shade (under trees in a native cerrado). Data were evaluated at 21 days interval at 60, 82, 103, 124 and 145 days after emergence. At 145 days the seedlings submitted to full sun growth presented promising results for the diameter (7.61 mm), leaf dry mass (10.75 g), stem dry mass (24.62 g), root dry mass (12.38 g), total dry matter (47.75 g), aerial part / root ratio (2.86 g) and Dickson quality index (6.75) being the most recommended condition for seedling production in Large scale at zero cost. For the natural shade condition the results were lower compared to full sun treatments and 50% shading.
- Publication
Nativa, 2017, Vol 5, Issue 6, p396
- ISSN
2318-7670
- Publication type
Article
- DOI
10.5935/2318-7670.v05n06a03