Nutrient accumulation and nutritional efficiency in eucalyptus

Eucalyptus accumulates large amounts of nutrients in its biomass and, in order to maintain high productivities, high doses of fertilizers are applied, mainly potassium. Adequate fertilization management requires information on nutrient contents in the various plant organs. This study aimed to use th...

Full description

Saved in:
Bibliographic Details
Published in:Journal of plant nutrition 2021-08, Vol.44 (16), p.2421-2434
Main Authors: de Lima Neto, Antonio João, Neves, Júlio César Lima, Martinez, Herminia Emilia Prieto, Sousa, Jailson Silva, Fernandes, Loane Vaz
Format: Article
Language:English
Subjects:
Accumulation
Boundary line
Calcium
Eucalyptus
Fertilization
Fertilizers
forest sustainability
Information management
Magnesium
Nitrogen
Nutrient content
Nutrients
nutritional management
Organs
Phosphorus
Potassium
Shoots
use efficiency
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!
Description
Summary:Eucalyptus accumulates large amounts of nutrients in its biomass and, in order to maintain high productivities, high doses of fertilizers are applied, mainly potassium. Adequate fertilization management requires information on nutrient contents in the various plant organs. This study aimed to use the boundary-line (BL) method to determine curves of nutrient accumulation in eucalyptus shoots. For this, a database containing information on yield and nutrient contents in the various plant organs was used. Scatter plots relating nutrient content in the areal part to trunk volume were constructed. In these graphs, points of the upper and lower edges of the cloud of points were selected, BLs were established and equations to quantify nitrogen (N), phosphorus (P), potassium (K), calcium (Ca) and magnesium (Mg) accumulation were obtained. Subsequently, the K content obtained in boundary plants was correlated with those of the other nutrients in the same plants. The relationship between nutrient content and trunk volume allowed establishing the maximum and minimum accumulations for the same volume produced. Plants with highest K accumulation had 4.6, 2.07 and 2.0 less accumulation of N, P and Mg, respectively, than those with lowest K accumulation, for the same trunk volume. At the end, it is concluded that plants with higher K accumulation showed reduction in the absorption of N, P and Mg and lower efficiency in the use of K, P, Ca and Mg.
ISSN:0190-4167
1532-4087
DOI:10.1080/01904167.2021.1899212