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Organic fertilization and crop load in yield and quality of organic nectarines in Italy
- Source :
- Revista Brasileira de Fruticultura, Vol 43, Iss 5 (2021)
- Publication Year :
- 2021
- Publisher :
- Sociedade Brasileira de Fruticultura, 2021.
-
Abstract
- Abstract Organic fertilization in orchards aims at increasing soil fertility, at impacting plant productivity and environmental sustainability. This study aimed at verifying the effects of organic fertilization and fruit load on two nectarine cultivars with high and low fruit loads. The experiment was carried out in an orchard under organic management in Fratta Terme, Po valley, in northeastern Italy. Nectarine cultivars Big Top and Carene, implemented in 2017 and grafted onto GF677, were used. Three levels of compost (0, 20 and 40 t dw ha-1) were combined with two fruit loads (low and high) to set up a factorial experimental design with two factors and four randomized replicates. Compost was incorporated at 20 cm depth. The following parameters were evaluated: nitrate- and ammonium- N concentrations in soil at 20 - 40 cm depth, macro and micronutrients in leaves, tree yield, number of fruits, fruit mass and diameter, soluble solids and pulp firmness. The supply of compost enhanced nitrate-N release in soil. In both cultivars, macro- and micronutrient concentrations in leaves were not affected by organic fertilization or fruit load, except for iron, which increased as a consequence of the compost supply. Low crop load induced higher fruit size in both varieties, a fact that was observed after pit hardening. However, the organic fertilization rate did not influence tree yield, fruit mass and soluble solids.
- Subjects :
- nitrate-N
ammonium-N
compost
production indexes
leaf nutrients
Plant culture
SB1-1110
Subjects
Details
- Language :
- English, Spanish; Castilian, Portuguese
- ISSN :
- 18069967 and 01002945
- Volume :
- 43
- Issue :
- 5
- Database :
- Directory of Open Access Journals
- Journal :
- Revista Brasileira de Fruticultura
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.57c5af0c9fbd42b3858af0122095b5b0
- Document Type :
- article
- Full Text :
- https://doi.org/10.1590/0100-29452021016