Incidência e severidade do "furo de bala" em folhas da ameixeira sob doses de nitrogênio e potássio

Tutida, Inês; Mio, Louise Larissa May De; Motta, Antônio Carlos Vargas; Rosa, Joatan Machado da

doi:10.1590/s0103-84782007000500002

Cited by 11 publications

(6 citation statements)

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“…This orchard produced an average of 32.9 ton/ ha over 3 years, without any differences between N and K rates, explained by the orchard´s good soil properties and plant management (DOLINSKI et al, 2007), however fertilizer rates applied affected brown rot, caused by Monilinia fructicola (MAY-DEMIO et al, 2008), and shot hole, caused by Wilsonomyces carpophilus (TUTIDA et al, 2007), important plum's diseases.…”

Section: Resultsmentioning

confidence: 94%

Nitrogen and potassium fertilization affecting the plum postharvest quality

Cuquel

Motta

Tutida³

et al. 2011

Rev. Bras. Frutic.

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-The goal of this research was evaluated the effects of potassium and nitrogen fertilization on the plum (Prunus salicina) fresh fruit quality and after cold storage. The experiment was carried out in a five year-old plum orchard 'Reubennel', located at Araucaria County, Parana State, Southern Brazil, in a Haplumbrept Soil. Potassium fertilizer was applied at 55 and 110 kg/ha/year of K 2 O, as KCl. Nitrogen fertilizer was applied at 40, 80, 120, 160 and 200 kg/ha/year of N, as urea. It was used a split-plot design in a factorial scheme (2x5). One hundred plum fruits were harvested from each plot, in the same day, when 25 to 50% of the peel presented yellow-reddish color. At harvest and after 17, 27 and 37 days of storage at 0 ± 0.5 ºC, the flesh firmness, the total soluble solids, and the titratable acidity were assessed. Fresh fruit quality was affected by N application, with the best results obtained by applying 40 kg/ha/year of N. The N and K rate of 40 and 110 kg/ha/year, respectively, kept superior fruit quality during the storage. 'Reubennel' cold storage can not exceed 27 days. Fresh and stored 'Reubennel' plum fruit qualities depend on the N and K fertilizer rates. Index terms: Prunus salicina, stone fruit, storage, nutrition, fertilizer. ADUBAÇÃO COM NITROGÊNIO E POTÁSSIO

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Section: Resultsmentioning

confidence: 94%

Nitrogen and potassium fertilization affecting the plum postharvest quality

Cuquel

Motta

Tutida³

et al. 2011

Rev. Bras. Frutic.

Self Cite

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“…O excesso de nitrogênio pode favorecer doenças fúngicas, principalmente nos casos onde P e K estiverem em baixos níveis. A alta concentração de nitrogênio reduz a produção de compostos fenólicos (Fungistáticos) e de lignina nas folhas, diminuindo a resistência aos patógenos obrigatórios, mas não aos facultativos (Tutida et al, 2007). Já o potássio é o elemento que apresenta consistentes resultados positivos na redução da incidência de pragas e doenças, devido a resistência mecânica dos tecidos (Guimarães et al, 2010).…”

Section: Discussionunclassified