Abstract
The ecological restoration of Cerrado ecosystems involves challenges pertinent to the fertilization of the substrate for seedlings in nursery, which are often produced by a single type of substrate. However, habitat heterogeneity suggests that the species may have different nutritional requirements. The objective was to assess the effect of substrate fertilization and nutritional supplementation by leaf in developing seedlings of Kielmeyera coriacea Mart. & Zucc. Eugenia dysenterica (Mart.) and DC Handroanthus impetiginosus (Mart. ex DC.) Mattos. The experiment was implemented in a 3x3 factorial completely randomized design (three types of substrates x three levels of foliar fertilization), with ten replicates. The treatments were tested by analysis of variance. For K. coriacea and H. impetiginosus, it is recommended to use a substrate composed of Soil + Manure (2:1), for E. dysenterica , it is recommended to use the complete substrate. Foliar fertilization is not recommended for all species. Regarding the soil analysis, organic matter, phosphorus and calcium were determinants in the formation of fertility groups for each of the major components of the Principal Component Analysis.
Highlights
As native ecosystems worldwide become degraded by the expansion of human activities, the demand for ecological restoration increases (Pilon, Buisson, & Durigan, 2018)
In view of the above, the present study aimed to evaluate the effect of substrate fertilization and nutritional supplementation via leaf on the development of seedlings of tree species native to the Cerrado: Eugenia dysenterica (Mart.) DC, Handroanthus impetiginosus (Mart ex DC.) Mattos and Kielmeyera coriacea Mart. & Zucc. and determine which nutrients available in the substrate have a greater correlation with the growth of these seedlings
For K. coriacea, there was no significant difference in stem diameter but significant difference in shoot height, with better results in the Soil + Manure and Complete substrates, being recommended the Soil + Manure substrate
Summary
As native ecosystems worldwide become degraded by the expansion of human activities, the demand for ecological restoration increases (Pilon, Buisson, & Durigan, 2018). The Cerrado, as well as forests, is undergoing a rapid transformation and is undeniable the need for more information on the nutritional status of their species in different soil types (Haridasan & Araújo, 2005). Such information is of great importance during period of the seedlings in nursery
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