Abstract
Abstract Nutritional balance interferes positively in obtaining high-quality seedlings of wood species. This study aimed to evaluate nitrogen fertilization during the production of L. divaricata seedlings. The experiment was conducted in a shade house located at 24°33’S and 54°04’W, in a randomized block design formed by two forms of fertilization plus a control applied during three months, totaling nine applications, with seven replicates of five seedlings each. Both exponential and conventional fertilization regimes supported the hypothesis of growth induction of L. divaricata seedlings in relation to the control during the growth phase, with exponential fertilization as a valid option to reduce initial nutrient loss by leaching.
Highlights
The productive sector of native forest essences in Brazil has aroused interest in the production of seedlings destined for commercialization, and you must guarantee the quality respecting the particularities of each species
The experiment was conducted in a shade house located at 24°33’S and 54°04’W, in a randomized block design formed by two forms of fertilization plus a control applied during three months, totaling nine applications, with seven replicates of five seedlings each. Both exponential and conventional fertilization regimes supported the hypothesis of growth induction of L. divaricata seedlings in relation to the control during the growth phase, with exponential fertilization as a valid option to reduce initial nutrient loss by leaching
L. divaricata seedlings were propagated by seeds, collected from fifteen trees located in areas of native vegetation in the West Region of Paraná by collectors from the Nucleus of Experimental Stations of UNIOESTE, in 120 cm3 plug filled with commercial substrate (Mecplant®) without basic fertilization, distributed in plastic trays with 96 cells placed on a metal frame 1,0 m from the ground
Summary
The productive sector of native forest essences in Brazil has aroused interest in the production of seedlings destined for commercialization, and you must guarantee the quality respecting the particularities of each species. The species present a variable demand in the different growth phases, mainly in relation to light, nutrients and humidity, and the way of management in nursery fertilization can strongly influence the morphology and physiology of the seedlings and, the postplanting performance (Scremin-Dias et al 2006). Li et al (2016) emphasized that mineral nutrition of plants is among the most important attributes for obtaining quality seedlings for planting of temperate forests. Villar-Salvador et al (2012) have argued in favor of the importance of mineral nutrition for the survival and growth of seedlings, supporting eco-physiological relationships between seedlings and post-planting responses. According to Uscola et al (2015), an optimal fertilization regime promotes seedling growth and nutrient loading without toxic effects
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