Assessment on nutrient levels in the aerial biomass of irrigated guava in São Francisco Valley, Brazil

Maia, Joana; Bassoi, L. H.; Silva, Davi José; Lima, Maria Auxiliadora Coêlho de; Assis, J. S. de; Morais, Patrícia Lígia Dantas de

doi:10.1590/s0100-29452007000300054

Cited by 9 publications

(17 citation statements)

References 6 publications

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“…The balance ranges computed from Maia et al (2007) were outside the range of balances of our topmost yielding trees (Figure 2 Table 3.…”

Section: Critical Balance Rangesmentioning

confidence: 86%

“…The ilr computations and discriminant analyses were conducted in the R statistical computing environment and the compositions package (BOOGART; TOLOSANA-DELGADO, 2008). Critical balance ranges were derived from nutrient concentration standards of Natale et al (2002a) and Maia et al (2007). Briefly, concentration lower limits were rationed using the smallest values at numerator and the highest ones at denominator.…”

Section: Discussionmentioning

confidence: 99%

“…Natale et al (2002b) proposed concentration ranges of 20-23 g kg -1 of N, 1.4-1.8 g kg -1 of P, 14-17 g kg -1 of K, 7-11 g kg -1 of Ca, and 3.4-4.0 g kg -1 of Mg at full bloom. Maia et al (2007) of Ca, and 2.7-2.8 g kg -1 of Mg in leaves between bud break and fruit set.…”

Section: Discussionmentioning

confidence: 99%

“…Nutrient balance ranges obtained by combining nutrient concentration standards of Natale et al (2002b) and Maia et al (2007) are presented in Table 3. The balance ranges computed from Maia et al (2007) were outside the range of balances of our topmost yielding trees (Figure 2 Table 3.…”

Section: Critical Balance Rangesmentioning

confidence: 99%

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Balancing guava nutrition with liming and fertilization

Hernandes¹,

Parent

Natale

et al. 2012

Rev. Bras. Frutic.

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-Guava response to liming and fertilization can be monitored by tissue testing. Tissue nutrient signature is often diagnosed against nutrient concentration standards. However, this approach has been criticized for not considering nutrient interactions and to generate numerical biases as a result of data redundancy, scale dependency and non-normal distribution. Techniques of compositional data analysis can control those biases by balancing groups of nutrients, such as those involved in liming and fertilization. The sequentially arranged and orthonormal isometric log ratios (ilr) or balances avoid numerical bias inherent to compositional data. The objectives were to relate tissue nutrient balances with the production of "Paluma" guava orchards differentially limed and fertilized, and to adjust the current patterns of nutrient balance with the range of more productive guava trees. It was conducted one experiment of 7-yr of liming and three experiments of 3-yr with N, P and K trials in 'Paluma' orchards on an Oxisol. Plant N, P, K, Ca and Mg were monitored yearly. It was selected the [N, P, K | Ca, Mg], [N, P | K], [N | P] and [Ca | Mg] balances to set apart the effects of liming (Ca-Mg) and fertilizers (N-K) on macronutrient balances. Liming largely influenced nutrient balances of guava in the Oxisol while fertilization was less influential. The large range of guava yields and nutrient balances allowed defining balance ranges and comparing them with the critical ranges of nutrient concentration values currently used in Brazil and combined into ilr coordinates. Index terms: Psidium guajava, compositional data analysis, isometric log ratios (ilr), plant mineral nutrition, Aitchison geometry. EQUILÍBRIO NUTRICIONAL DE GOIABEIRAS A PARTIRDA CALAGEM E ADUBAÇÃO RESUMO -A resposta da goiabeira à calagem e à adubação pode ser monitorada por análises de tecido vegetal. O perfil nutricional é definido em relação a padrões de teores de nutrientes. No entanto, os teores de nutrientes-padrão são constantemente criticados por não considerarem as interações que ocorrem entre nutrientes e por gerarem tendências numéricas, decorrentes da redundância dos dados, da dependência de escala e da distribuição não normal. As técnicas de análise composicional de dados podem controlar esses dados tendenciosos, equilibrando os grupos de nutrientes, tais como os envolvidos na calagem e na adubação. A utilização das relações log isométricas (ilr) ortonormais, sequencialmente dispostas, evita tendências numéricas inerentes aos dados de composição. Os objetivos do trabalho foram relacionar o balanço de nutrientes dos tecidos vegetais com a produção de goiabeiras em pomares de 'Paluma' diferentemente corrigidos e adubados, e ajustar os atuais padrões de nutrientes com a faixa de equilíbrio das goiabeiras mais produtivas.

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“…The balance ranges computed from Maia et al (2007) were outside the range of balances of our topmost yielding trees (Figure 2 Table 3.…”

Section: Critical Balance Rangesmentioning

confidence: 86%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Critical Balance Rangesmentioning

confidence: 99%

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Balancing guava nutrition with liming and fertilization

Hernandes¹,

Parent

Natale

et al. 2012

Rev. Bras. Frutic.

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“…Em pesquisa realizada por Maia et al (2007) observou-se em goiabeiras cv. Paluma no Vale do São Francisco teores foliares de N entre 20 e 25 mg kg -1 desde a brotação até o início de maturação dos frutos.…”

Section: Resultsunclassified

Teores de macronutrientes em folhas de goiabeira fertirrigada com nitrogênio

Neto¹,

Maciel²,

Alves³

et al. 2013

Rev. bras. eng. agríc. ambient.

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RESUMOO objetivo deste estudo foi diagnosticar os teores de macronutrientes nitrogênio, fósforo, potássio, cálcio e magnésio nas folhas de goiabeira, em função de diferentes lâminas de irrigação (1144, 1465, 1785 e 2106 mm no primeiro ciclo, e 915, 1308, 1686 e 2093 mm no segundo ciclo produtivo) e níveis de fertilizantes nitrogenados (50, 100, 150 e 200 kg ha -1 ). Verificou-se efeito apenas isolado dos fatores lâminas de água e adubação nitrogenada sobre as concentrações dos macronutrientes estudados. A lâmina de água exerceu efeito linear positivo na concentração de fósforo e efeito quadrático na concentração de magnésio, nos dois ciclos produtivos, enquanto a adubação nitrogenada não influenciou os teores desses elementos. A concentração de potássio respondeu de forma quadrática à lâmina de água no primeiro ciclo produtivo e à adubação nitrogenada no segundo. A lâmina de água teve efeito linear positivo sobre o cálcio apenas no segundo ciclo; já o efeito da adubação nitrogenada foi quadrático e somente no primeiro ciclo. O efeito da adubação nitrogenada no teor de nitrogênio foi quadrático no primeiro ciclo produtivo e linear positivo no segundo; entretanto, a lâmina de água não exerceu efeito algum. Palavras-chave:Psidium guajava L., fruticultura brasileira, nutrição de plantas, irrigação localizada Macronutrient contents in guava leaves fertigated with nitrogen ABSTRACT This study aimed to diagnose the contents of macronutrients nitrogen, phosphorus, potassium, calcium and magnesium in the leaves of guava, under different irrigation depths (1144, 1465, 1785 and 2106 mm in the first cycle, and 915, 1308, 1686 and 2093 mm in the second productive cycle) and levels of nitrogen fertilizer (50, 100, 150 and 200 kg ha -1 ). Only isolated effects of the factors (water depths and nitrogen fertilization) were verified on the concentrations of the studied micronutrients. The water depth exercised positive linear effect on the phosphorus concentration and quadratic effect on the concentration of magnesium in both productive cycles, while the nitrogen fertilization did not influence the contents of these elements. The potassium concentration showed the quadratic effect of the water depth in the first cycle and of the nitrogen fertilization in the second one. The water depth had a positive linear effect on calcium just in the second cycle, whereas the effect of the nitrogen fertilization was quadratic only in the first cycle. The effect of the nitrogen fertilization on the concentration of nitrogen was quadratic in the first cycle and positive linear in the second one; however, the water depth did not exercise any effect.

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