Qualidade de frutos do coqueiro-anão verde fertirrigado com nitrogênio e potássio
Open accessAbstract
Em um pomar de coqueiro-anão verde (Cocos nucifera L.) com três anos de idade, um experimento de campo foi desenvolvido no período de abril/2000 a maio/2002, em Parnamirim, Rio Grande do Norte, para avaliar os efeitos do nitrogênio e do potássio aplicados via fertirrigação sobre o peso médio dos frutos, o volume, o pH, o teor de sólidos solúveis e a condutividade elétrica da água de coco. Os tratamentos consistiram da combinação através da matriz experimental de Plan Puebla, de cinco doses de N e cinco doses de K, ambos variando de 135 a 2.565 g planta-1 ano-1. O delineamento experimental foi o de blocos ao acaso, com quatro repetições. As doses de N e K afetaram o peso médio dos frutos, sendo que o maior peso médio, 2,23 kg, foi obtido com as doses de 881,31 g de N planta-1 ano-1 e 1.689,48 g de K planta-1 ano-1 . Também se observou efeito no volume da água de coco para os dois nutrientes. A dose de máxima eficiência física foi 818,94 g de N planta-1 ano-1 e 1.487,38 g de K planta-1 ano-1, atingindo 417,81mL de volume. Apenas as doses de K influíram no pH da água de coco. As doses de N e K aplicadas afetaram o teor de sólidos solúveis da água de coco de maneira linear, decrescente e crescente, respectivamente. As doses de N tiveram efeito linear decrescente, e as doses de K, efeito quadrático sobre a condutividade elétrica da água de coco.
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Electrical conductivity was negatively correlated with N supplementation.
“Electrical conductivity was negatively correlated with N supplementation.”
From Coconut water uses, composition and properties: a review (2012) · cites this paper as [67]
The effect of phosphorus supplementation appeared to be similar to that of potassium supplementation.
“The effect of phosphorus supplementation appeared to be similar.”
From Coconut water uses, composition and properties: a review (2012) · cites this paper as [67]
The investigations of the effects of NPK and NP supplementation on coconut water quality were only carried out on 3-year-old coconut palms.
“However, it should be noted that the investigations were only carried out on 3-year-old coconut palms [67].”
From Coconut water uses, composition and properties: a review (2012) · cites this paper as [67]
Unlike potassium, nitrogen supplementation is expected to have a negative effect on the water volume, weight and number of fruits per bunch.
“Unlike potassium, nitrogen supplementation is expected to have a negative effect on the water volume, weight and number of fruits per bunch.”
From Coconut water uses, composition and properties: a review (2012) · cites this paper as [67]
Potassium supplementation had an effect on the potassium content of coconut water and the amount of soluble solids in 7-month-old nuts.
“It appeared that potassium supplementation had an effect on the potassium content of coconut water and the amount of soluble solids in 7-month-old nuts.”
From Coconut water uses, composition and properties: a review (2012) · cites this paper as [67]
The sensory analysis of coconut water in nuts from fields fertilised with NPK was normal.
“The sensory analysis of coconut water in nuts from fields fertilised with NPK was normal.”
From Coconut water uses, composition and properties: a review (2012) · cites this paper as [67]
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References 10 · Cited by 16
- Authors
- Silva, R. A. D., Cavalcante, L. F., Holanda, J. S. D., Pereira, W. E., Moura, M. F. D., & Ferreira Neto, M.
- Affiliations
- Universidade Federal do Rio Grande do Norte (BR)
- Universidade Federal da Paraíba (BR)
- Embrapa (BR)
- Venue
- Revista Brasileira de Fruticultura
- Publisher
- FapUNIFESP (SciELO)
- Published
- 2006-08
- Volume
- 28
- Issue
- 2
- Pages
- 310-313
- ISSN
- 0100-2945 (ISSN-L)
- OpenAlex
- W1972945615
- Cited by
- 16
- References
- 10
- Citations by year
- 2024: 1 · 2022: 1 · 2021: 1 · 2018: 2 · 2017: 2 · 2013: 1 · 2012: 2
- FWCI
- 0.94
- Type
- journal article
- Language
- pt
- Open access
- gold
- doi.org
- Licence
- cc-by-nc
- Locations
- Revista Brasileira de Fruticultura (publishedVersion, cc-by-nc)
- LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (publishedVersion, other-oa)
- Americanae (AECID Library) (submittedVersion, cc-by-nc)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Topics
- Physical Sciences › Chemistry › Inorganic Chemistry › Coconut Research and Applications
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Growth and nutrition in plants
- Life Sciences › Agricultural and Biological Sciences › Soil Science › Plant Growth and Agriculture Techniques
- Keywords
- dwarf coconut, Cocos nucifera, fertigation, nitrogen fertilization, potassium fertilization, fruit quality, fruit weight, coconut water, soluble solids, electrical conductivity, water pH, dose-response relationship
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