Loading…
Do stimulate® and acadian® promote increased growth and physiological indices of Hymenaea courbaril seedlings?
Abstract Products that have biostimulant action on forest seedlings, such as those based seaweed Acadian® and hormones, have been used due to their beneficial effect on the physiology and growth of plants, in order to improve the quality of forest seedlings. The present study establishes as research...
Saved in:
Published in: | Revista Brasileira de Fruticultura 2022-01, Vol.44 (2) |
---|---|
Main Authors: | , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Summary: | Abstract Products that have biostimulant action on forest seedlings, such as those based seaweed Acadian® and hormones, have been used due to their beneficial effect on the physiology and growth of plants, in order to improve the quality of forest seedlings. The present study establishes as research problem: Can doses of Acadian® algae extract and Stimulate® be effective for the initial growth and physiological indices of jatobá seedlings? The variables evaluated were: shoot height (H), stem diameter (SD), increments in stem diameter (?SD) and shoot height (?H), shoot dry mass (SDM, g plant-1), root dry mass (RDM, g plant-1) and total dry mass (TDM, g plant-1), and Dickson quality index, net assimilation rate (EA, g.m-2.day), leaf relative growth rate (RA, g.m-2.day), leaf area ratio (FA, m2.g-1), specific leaf area (SA, cm2.g-1), leaf mass ratio (Fw, g/g-1) as well as nitrogen balance index (NBI) and chlorophylls. The plant growth regulators (Acadian®) at the dose of maximum technical efficiency of 0.28 ml L-1 promotes an increase in stem diameter in Hymenaea courbaril. Acadian® increases chlorophyll a and b contents in Hymenaea courbaril seedlings. The tested doses of Stimulate® do not increase chlorophyll a and b contents in H. courbaril seedlings.
Resumo Produtos que apresentam ação bioestimulante em mudas florestais, como a base de alga Acadian® e hormônios, vêm sendo utilizados pelo efeito benéfico na fisiologia e crescimento de plantas, com o intuito de melhorar a qualidade de mudas florestais. O presente estudo estabelece como problema de pesquisa: Doses de Acadian® e Stimulate® podem ser eficazes no crescimento inicial, bem como nos índices fisiológicos de mudas de jatobá? As variáveis avaliadas foram: comprimento da parte aérea (H), diâmetro do caule (DC), incremento do diâmetro do caule (?DC) e da altura da parte aérea (?H), massa seca da parte aérea (MSPA, g plant-1), massa seca das raízes (MSR, g plant-1) e massa seca total (MST, g plant-1), e índice de qualidade de Dickson, taxa de assimilação líquida (EA, g.m-2.dia), taxa de crescimento relativo foliar (RA, g.m-2.dia ); razão de área foliar (FA, m2 .g-1), área foliar específica (SA, cm2.g-1), razão da massa foliar (Fw, g/g-1) e o índice de balanço de nitrogênio (IBN) e de clorofilas. O regulador de crescimento de plantas (Acadian®) na dose de máxima eficiência técnica, 0.28 ml L-1, promove incremento em diâmetro do caule em mudas de Hymenaea courbaril. O Acadian® promove incremento no conteú |
---|---|
ISSN: | 0100-2945 1806-9967 1806-9967 |
DOI: | 10.1590/0100-29452022872 |