Spatial variability of chemical attributes of the soil, plant and yield in a pear orchard

For fruiting trees, fertilization is usually recommended based on the analyses of soil and leaves, adopting a standard value for the whole orchard. This management can lead to undesirable imbalances to the plants and local agroecosystem. Thus, this trial aimed at mapping the spatial variability of p...

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Bibliographic Details
Published in:Journal of plant nutrition 2016-02, Vol.39 (3), p.323-336
Main Authors: Konopatzki, Marcia R. S, Souza, Eduardo G, Nóbrega, Lúcia H. P, Bazzi, Claudio L, Rocha, Davi M
Format: Article
Language:English
Subjects:
agroecosystems
crop yield
fruiting
leaves
localized fertilization
orchards
pears
precision horticulture
soil analysis
soil properties
thematic maps
trees
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Summary:For fruiting trees, fertilization is usually recommended based on the analyses of soil and leaves, adopting a standard value for the whole orchard. This management can lead to undesirable imbalances to the plants and local agroecosystem. Thus, this trial aimed at mapping the spatial variability of properties of soil, plant and yield in a commercial area of pears production and investigating the yield response to a distinguished fertilization. The trial was carried out in Nova Laranjeiras, Paraná, where 36 trees were selected to receive conventional fertilization (CF) and other 36 trees received a site-specific fertilization (SSF). All variables (chemical and physical attributes of soil, leaf tissue, and yield) showed some spatial dependence. For all years, yield variability was considered very high. The yield of SSF system was slightly higher (2,625 kg ha ⁻¹) and took up a larger area (59%) when compared to SF system (2,548 kg ha ⁻¹ at 41% area).
ISSN:1532-4087
0190-4167
1532-4087
DOI:10.1080/01904167.2015.1014562