Alternative for potassic fertilization of vegetables in organic management in low fertility natural soil of the humid tropics
| Autor: | dos Santos, Aline Moreno Ferreira [UNESP], dos Santos, Valter Barbosa [UNESP], de Araújo, Ana Maria Silva, Ferraz Junior, Altamiro Souza de Lima, de Souza Rolim, Glauco [UNESP], Lazo, Ronald Alvarez, Carvalho, Mary Jane Nunes [UNESP] |
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| Přispěvatelé: | Universidade Estadual Paulista (Unesp), Universidade Estadual de Maringá (UEM) |
| Rok vydání: | 2020 |
| Předmět: |
Biofertilizer
Crop yield Wood ash Applied Microbiology and Biotechnology Humid tropics Potassium sulfate Natural (archaeology) chemistry.chemical_compound Human fertilization Agronomy chemistry Potassium Organic farming Environmental science Animal Science and Zoology Agronomy and Crop Science Alternative sources Food Science |
| Zdroj: | Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| ISSN: | 2079-0538 2079-052X |
| DOI: | 10.9755/ejfa.2020.v32.i3.2085 |
| Popis: | Made available in DSpace on 2020-12-12T01:24:37Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-03-01 The organic food production and mainly the demand for these products have been growing much worldwide, and with this rising demand there is need for more adequate soil management. Organic fertilization is one of the points to improve and the alternative sources of nutrients should be better evaluated. Potassium is an essential nutrient required in large quantities by greenery and fruit, but according to the legislation of organic production, it can only be used as crushed rocks such as potassium sulfate. The objective of this work was to evaluate the efficiency of potassium sulfate (soluble source), wood ash and marble powder as alternative sources of potassium in organic system, using hybrid maize AG 1051 as the indicator crop. The experimental design applied was in randomized blocks in the 3×4×2 factorial scheme, consisting of three potassium sources applied in four doses (0, 60, 90 and 120 kg ha-1 K2O) in the presence and absence of Biofertilizer, with four repetitions. The data were submitted to analysis of variance (ANOVA) and the averages were compared by the Tukey test (p < 0.05). Both wood ash and marble powder tested can be used as complementary potassium fertilization in organic production systems. Marble powder proved to be the most efficient among the treatments and the Biofertilizer did not have a significant effect on the evaluated characteristics. UNESP-Jaboticabal, Path of Access Prof. Paulo Donato Castellane, s/n UNESP-Jaboticabal, Address: Path of Access Prof. Paulo 8 Donato Castellane, s/n UEMA Paulo VI University City, Lourenço Vieira da Silva Avenue, n, 1000 UNESP-Jaboticabal, Path of Access Prof. Paulo Donato Castellane, s/n UNESP-Jaboticabal, Address: Path of Access Prof. Paulo 8 Donato Castellane, s/n |
| Databáze: | OpenAIRE |
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