Copper supply and fruit yield of young Citrus trees: fertiliser sources and application methods
| Autor: | Franz Walter Rieger Hippler, José Antonio Quaggio, Rodrigo Marcelli Boaretto, Luiz Antonio Junqueira Teixeira, Dirceu Mattos-Jr |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
Fertigation fertigation Materials Science (miscellaneous) Orange (colour) 01 natural sciences chemistry.chemical_compound Nutrient Nitrate citriculture Yield (wine) micronutrient lcsh:Agriculture (General) Phytosanitary certification food and beverages 04 agricultural and veterinary sciences lcsh:S1-972 nutritional status Horticulture chemistry foliar application 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Environmental science Phytotoxicity Orchard General Agricultural and Biological Sciences 010606 plant biology & botany |
| Zdroj: | Bragantia, Volume: 77, Issue: 2, Pages: 365-371, Published: 22 MAR 2018 Bragantia, Issue: ahead, Published: 22 MAR 2018 Bragantia, Iss 0 (2018) Bragantia v.77 n.2 2018 Bragantia Instituto Agronômico de Campinas (IAC) instacron:IAC |
| ISSN: | 1678-4499 0006-8705 |
| DOI: | 10.1590/1678-4499.2017125 |
| Popis: | This study aimed to evaluate the fertiliser sources and application methods of copper (Cu) in citrus trees during the first years of fruit production. Two experiments were set up in an orchard with 3-year-old sweet orange trees, which were applied with three sources of Cu (nitrate, sulfate or EDTA) either via fertigation (Experiment 1) or via foliar sprays (Experiment 2). Regardless of the fertiliser source, Cu application via fertigation was not efficacious to increase the micronutrient concentration in leaves and, consequently, did not affect fruit yield. Conversely, foliar application of Cu, either as nitrate or sulfate, increased this nutrient level in leaves but when applied as copper nitrate, visual phytotoxicity symptoms were verified in leaves due to salt accumulation in the plant canopy, which reduced the fruit yield. Considering the plant growth and intensified phytosanitary management of the orchard with the application of copperbased products after the third year of the experiment, the effects of Cu treatments on fruit yield are expected to be negligible as the trees age. |
| Databáze: | OpenAIRE |
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