Doses of controlled release fertilizers in the chlorophyll content and production of seedlings of grapia

Authors

  • Osmar Henrique de Castro Pias Universidade Federal de Santa Maria, Campus de Frederico Westphalen
  • Edison Bisognin Cantarelli Universidade Federal de Santa Maria, Campus de Frederico Westphalen
  • Juliano Berghetti Universidade Federal de Santa Maria, Campus de Frederico Westphalen
  • Rogério Leschewitz Universidade Federal de Santa Maria, Campus de Frederico Westphalen
  • Elizandro Ricardo Kluge Universidade Federal de Santa Maria, Campus de Frederico Westphalen
  • Lucindo Somavilla Universidade Federal de Santa Maria, Campus de Frederico Westphalen

DOI:

https://doi.org/10.4336/2013.pfb.33.73.419

Keywords:

Caesalpinoideae, Apuleia leiocarpa, Nutrition

Abstract

The objective of this work was to define the best doses of Osmocote® for Apuleia leiocarpa seedling production for 60 and 90 days residence in the seedling nursery after the transplanting and to observe the chlorophyll index response of the seedlings
during the studying period. The experimental design used was completely randomized, with five treatments and ten repetitions. The treatments consisted of increasing doses of Osmocote® ( 0, 3, 6, 9 e 12 kg m-3 of substratum). There chlorophyll index, seedling
diameter and height at 60 and 90 days after transplantation, leaf area, aerial part dry mass, root length and dry mass at 90 days after transplantation. Considering the average values of the points of maximum technical efficiency, seedling diameter and height, it was concluded that the best dosage of Osmocote® for A. leiocarpa seedling production, in a period of 60 and 90 days after transplantation are 7.97 and 7.73 kg of Osmocote® m-3 of substratum, respectively. The chlorophyll index demonstrated quadratic behavior for Osmocote® doses and positive correlation with the variables height and seedling diameter.

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Author Biographies

Osmar Henrique de Castro Pias, Universidade Federal de Santa Maria, Campus de Frederico Westphalen

Ciências agronomicas e biológicas/ Ciências agrárias

Edison Bisognin Cantarelli, Universidade Federal de Santa Maria, Campus de Frederico Westphalen

Engenharia florestal/ Ciências agrárias

Juliano Berghetti, Universidade Federal de Santa Maria, Campus de Frederico Westphalen

Ciências agronomicas e ambientais/ Ciências agrárias

Rogério Leschewitz, Universidade Federal de Santa Maria, Campus de Frederico Westphalen

Ciências agronomicas e ambientais/ Ciências agrárias

Elizandro Ricardo Kluge, Universidade Federal de Santa Maria, Campus de Frederico Westphalen

Ciências agronomicas e ambientais/ Ciências agrárias

Lucindo Somavilla, Universidade Federal de Santa Maria, Campus de Frederico Westphalen

Ciências agronomicas e ambientais/ Ciências agrárias

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Published

2013-03-31

How to Cite

PIAS, Osmar Henrique de Castro; CANTARELLI, Edison Bisognin; BERGHETTI, Juliano; LESCHEWITZ, Rogério; KLUGE, Elizandro Ricardo; SOMAVILLA, Lucindo. Doses of controlled release fertilizers in the chlorophyll content and production of seedlings of grapia. Pesquisa Florestal Brasileira, [S. l.], v. 33, n. 73, p. 19–25, 2013. DOI: 10.4336/2013.pfb.33.73.419. Disponível em: https://pfb.sede.embrapa.br/pfb/article/view/419. Acesso em: 6 mar. 2026.

Issue

Vol. 33 No. 73 (2013): jan./mar.

Section

Articles

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