Controlled-Release Fertilizer and Container Volume to Produce Inga laurina Seedlings

Gerhard Valkinir Cabreira,Wilbert Valkinir Cabreira,Jorge Makhlouta Alonso,Alexander Silva De Resende,Thasso José Silva E Sousa,Paulo Sérgio Dos Santos Leles

doi:10.1590/2179-8087-floram-2019-0057

Abstract

This study evaluated the production of Inga laurina (Sw.) Willd seedlings in 110 and 280 cm3 tube containers and growing doses (0, 3, 6 and 12 kg m-3) of controlled-release fertilizer (CRF) (15-09-12) and their performance at 5 and 12 months after outplanting. The experiment was conducted using a randomized split-plot design, in a 2 x 4 arrangement (tube volumes x CRF doses). Stabilized sewage sludge from urban origin was used as substrate. It was assessed growth and biomass of the seedlings in nursery, as well as survival and growth after outplanting. Containers of 280 cm3 and doses between 6 to 12 kg m-3 produced seedlings in less time, with higher growth and biomass. At 12 months after outplanting, seedlings presented acceptable growth and mortality rate with doses equal or greater than 6 and 3 kg m-3 of CRF, respectively, for the 110 and 280 cm3 tube.

Highlights

AND OBJECTIVESThe most usual technique for restoration of the Atlantic Forest is the planting of seedlings from native species
This study evaluated the production of Inga laurina (Sw.) Willd seedlings in 110 and 280 cm3 tube containers and growing doses (0, 3, 6 and 12 kg m-3) of controlled-release fertilizer (CRF) (15-09-12) and their performance at 5 and 12 months after outplanting
This study evaluated the effect of four doses (0, 3, 6 and 12 kg m-3) of controlled-release fertilizer (15-09-12) and two

Summary

Introduction

AND OBJECTIVESThe most usual technique for restoration of the Atlantic Forest is the planting of seedlings from native species. Polypropylene tubes are between the most used containers to produce forest seedlings, they can have different shapes and sizes and present the advantages of being reusable, light and easy to handle, their use can improve ergonomics during nursery activities and allow the mechanization of some operations (Freitas et al, 2006). Fertilization is another factor that influences the final quality of seedlings. The use of CRF can reduce production costs, because of a shorter crop cycle, less operations, as well as the optimization of space, water and energy use (Gibson et al, 2019)

Methods

Results

Conclusion