Translocação e compartimentalização de Zn em função de doses aplicadas em feijoeiro e cafeeiro via radicular

Martínez, Herminia; Zabini, André Vinicius; Franco, Ivan Alencar de Lima; Novais, Roberto Ferreira

doi:10.1590/s0103-84782005000300001

Cited by 11 publications

(8 citation statements)

References 8 publications

(9 reference statements)

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“…Furthermore, under conditions of low nutrient supply, remobilization can occur from older and mature tissues to those that are undergoing development [ 37 ]. Thus, in addition to the new leaves, the stems and branches are important reserve organs for Zn, as a high content of this element was observed in the aboveground parts of the plants ( Table 6 ), similarly to verified in other crops like as coffee and beans [ 40 , 42 ]. However, there is also no strong evidence regarding plant capacity for nutrient remobilization through the phloem among different plant species, analogous as reported for boron with species that accumulated polyols [ 43 ].…”

Section: Discussionsupporting

confidence: 60%

Uptake and Distribution of Soil Applied Zinc by Citrus Trees—Addressing Fertilizer Use Efficiency with 68Zn Labeling

Hippler¹,

Boaretto²,

Quaggio

et al. 2015

PLoS ONE

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The zinc (Zn) supply increases the fruit yield of Citrus trees that are grown, especially in the highly weathered soils of the tropics due to the inherently low nutrient availability in the soil solution. Leaf sprays containing micronutrients are commonly applied to orchards, even though the nutrient supply via soil could be of practical value. This study aimed to evaluate the effect of Zn fertilizers that are applied to the soil surface on absorption and partitioning of the nutrient by citrus trees. A greenhouse experiment was conducted with one-year-old sweet orange trees. The plants were grown in soils with different textures (18.1 or 64.4% clay) that received 1.8 g Zn per plant, in the form of either ZnO or ZnSO4 enriched with the stable isotope 68Zn. Zinc fertilization increased the availability of the nutrient in the soil and the content in the orange trees. Greater responses were obtained when ZnSO4 was applied to the sandy loam soil due to its lower specific metal adsorption compared to that of the clay soil. The trunk and branches accumulated the most fertilizer-derived Zn (Zndff) and thus represent the major reserve organ for this nutrient in the plant. The trees recovered up to 4% of the applied Zndff. Despite this relative low recovery, the Zn requirement of the trees was met with the selected treatment based on the total leaf nutrient content and increased Cu/Zn-SOD activity in the leaves. We conclude that the efficiency of Zn fertilizers depends on the fertilizer source and the soil texture, which must be taken into account by guidelines for fruit crop fertilization via soil, in substitution or complementation of traditional foliar sprays.

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Section: Discussionsupporting

confidence: 60%

Uptake and Distribution of Soil Applied Zinc by Citrus Trees—Addressing Fertilizer Use Efficiency with 68Zn Labeling

Hippler¹,

Boaretto²,

Quaggio

et al. 2015

PLoS ONE

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“…However, the effectiveness of foliar application depends on processes of nutrients penetration through the cuticle, foliar uptake by cells and transport via phloem for preferential drains (RODRIGUES et al, 1997). For this reason, Zn uptake by leaves will depend on several factors such as: leaves characteristics, particularly regarding the cuticle thickness; spraying techniques; climatic conditions; chemical characteristics of the applied solution and also, the plant's internal ionic state (MARTINEZ et al, 2005). Significant increases in grain yield with foliar Zn application have been reported in other crops such as rice (CAKMAK, 2008), triticale (CAKMAK et al, 1997), common beans (TEIXEIRA et al, 2004) and maize (POTARZYCKI & GRZEBISZ, 2009).…”

mentioning

confidence: 99%

“…Such effects of foliar Zn application may be due to its role in crop growth (CAKMAK, 2008), involving processes of photosynthesis, nitrogen assimilation, respiration and activation of other biochemical and physiological processes and hence their importance in obtaining greater yields. It is noteworthy also that Zn translocation applied to leaves depends on the plant nutritional status (MARTINEZ et al, 2005). Thus, it can be inferred that due to the high micronutrient availability in the soil, there was greater use and Zn translocation applied to wheat leaves.…”

mentioning

confidence: 99%

Response of wheat to foliar application of zinc

et al. 2012

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“…Oliveira et al (2003) reported significantly positive responses of two rice cultivars to Zn, and Barbosa Filho et al (1994) and Leão (1990) found that seedling shoot height was significantly increased for seeds that had been treated with zinc. Studies involving the seeds of other species have identified zinc as an enhancer of radicle growth, for example, in rice (Ohse et al, 2000), maize (Roselan and Franco, 2000), sorghum (Yagi et al, 2006), common bean (Martinez et al, 2005) and wheat (Prado et al, 2007). However, Fungueto et al (2010) observed no difference in shoot growth at various zinc doses; however, increased boron concentrations decreased root weight/length.…”

Section: Effect Of Znso 4 Dose On Nutritional Efficiencymentioning

confidence: 99%

Response of wheat seeds to zinc application during storage

et al. 2015

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109-119. Seed coating is among the most potentially beneficial treatments to enhance seed performance, contributing to the improvement of crop stands due to its role in improved seedling development. Thus, micronutrients such as zinc exhibit potential for use in seed coatings. The objective of this research is to evaluate the effect of coating wheat seeds with zinc sulfate on traits that are related to seed quality during storage and nutrition efficiency during seedling growth. The levels of ZnSO 4 used were 0, 1, 2, 3 and 4 mL kg -1 seed. After 0, 3 and 6 months of storage, the germination percentage, mean root length, root dry mass, seedling emergence, nutritional efficiency (absorption, transport and use) and zinc content in the seeds were evaluated. Seed coating with ZnSO 4 increased seedling dry weight and zinc content in roots, which are the primary sink for this nutrient. Higher rates of ZnSO 4 coating resulted in higher absorption efficiency and a concomitant decrease in Zn transport and use efficiency. Thus, the application of appropriate doses of zinc to seeds increases the accumulation of this nutrient, resulting in well-nourished plants that present improved initial development under adverse conditions.

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Translocação e compartimentalização de Zn em função de doses aplicadas em feijoeiro e cafeeiro via radicular

Cited by 11 publications

References 8 publications

Uptake and Distribution of Soil Applied Zinc by Citrus Trees—Addressing Fertilizer Use Efficiency with 68Zn Labeling

Uptake and Distribution of Soil Applied Zinc by Citrus Trees—Addressing Fertilizer Use Efficiency with 68Zn Labeling

Response of wheat to foliar application of zinc

Response of wheat seeds to zinc application during storage

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