Additional nitrogen fertilization affects salt tolerance of lemon trees on different rootstocks

Gimeno, Vicente; Syvertsen, James P.; Nieves, Manuel; Simón, I.; Martı́nez, Vicente; Garcı́a-Sánchez, Francisco

doi:10.1016/j.scienta.2009.02.019

Cited by 57 publications

(23 citation statements)

References 36 publications

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“…In this way, supplementary application of N can increase NO 3 absorption, in detriment to the Cl -, reducing the Cl -/N ratio in the leaves, which can reestablish the ionic homeostasis, favoring consequently the decrease of the effect of the saline stress in the plants. However, the results of studies involving salinity x nitrogen interaction are controversial, and in some cases no beneficial effect of N was observed in plants under salt stress (GIMENO et al, 2009;LACERDA et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Water salinity and nitrogen fertilization in the production and quality of guava fruits

Bezerra¹,

Gheyi²,

Nobre³

et al. 2019

Biosci. J.

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Using nitrogen (N) to increase plant tolerance to salinity has been tested in many species. However, in addition to controversial results, most studies are conducted with annual species and/or in the initial growth stage and there are almost no studies with perennial fruit crops in the production stage. Thus, this study aimed to evaluate the production components and post-harvest quality of 'Paluma' guava irrigated with water of increasing salinity in soil fertilized with N. The experiment was carried out for two years in drainage lysimeters in an experimental area of the Federal University of Campina Grande (UFCG), Pombal, PB, Brazil. The experimental design was in randomized blocks, in 5 x 4 factorial scheme, with of five levels of water salinity-ECw (NaCl) (0.3, 1.1, 1.9, 2.7 and 3.5 dS m-1) and four N doses (ureia) (70, 100, 130 and 160% of the recommended dose-541.1 mg of N dm-3 of soil per year), with three replicates. Number of fruits, mean fruit weight, production per plant, polar and equatorial diameters of fruit and contents of soluble solids and ascorbic acid (vitamin C) decreased linearly with the increase in irrigation water salinity from 0.3 dS m-1. The interaction between water salinity and N doses and the isolated action of N did not interfere statistically with the studied variables.

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Section: Introductionmentioning

confidence: 99%

Water salinity and nitrogen fertilization in the production and quality of guava fruits

Bezerra¹,

Gheyi²,

Nobre³

et al. 2019

Biosci. J.

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“…Cl ‐ concentration in leaves can be reduced by the presence of NO 3 ‐ in the growth medium (Abdolzadeh et al. 2008; Gimeno et al. 2009; Song et al.…”

Section: Introductionmentioning

confidence: 99%

“…Fricke, Leigh & Tomos 1994;Frachisse et al 1999) and many anion channels are more selective to NO3than to Cl - (Roberts 2006). Clconcentration in leaves can be reduced by the presence of NO3in the growth medium (Abdolzadeh et al 2008;Gimeno et al 2009;Song et al 2009). NO3 -/Clinteractions are also analogous to the focus on K + /Na + interactions and selectivity when considering Na + exclusion mechanisms.…”

Section: Introductionmentioning

confidence: 99%

Mechanisms of Cl^‐ transport contributing to salt tolerance

Teakle¹,

Tyerman²

2010

Plant Cell & Environment

401

330

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Mechanisms of Cl-transport in plants are poorly understood, despite the importance of minimizing Cl -toxicity for salt tolerance. This review summarizes Cl -transport processes in plants that contribute to genotypic differences in salt tolerance, identifying key traits from the cellular to whole-plant level. Key aspects of Cl -transport that contribute to salt tolerance in some species include reduced net xylem loading, intracellular compartmentation and greater efflux of Cl -from roots. We also provide an update on the biophysics of anion transport in plant cells and address issues of charge balance, selectivity and energy expenditure relevant to Cl -transport mechanisms. Examples are given of anion transport systems where electrophysiology has revealed possible interactions with salinity. Finally, candidate genes for anion transporters are identified that may be contributing to Cl -movement within plants during salinity. This review integrates current knowledge of Cl -transport mechanisms to identify future pathways for improving salt tolerance.

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“…Fruit yield and quality of citrus trees depends largely on nitrogen (N) and potassium (K) fertilization Alva et al, 2006), elements which represent the greatest quantity of nutrients exported through harvest (Bataglia et al, 1977;Mattos Jr. et al, 2003). Furthermore, under abiotic stress conditions as salinity or drought, N and K may contribute to reduce excess absorption of sodium (Na) and chloride (Cl) by citrus trees because of the competitive root uptake observed between NO 3 -/Cl -and K + /Na + (Gimeno et al, 2009). Potassium also affects external fruit characteristics, since those become larger and coarser as the K supply increases; on the other hand, K deficiency reduces number and fruit size of all citrus varieties and decreases soluble solids content of juice (Alva et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Sources and rates of potassium for sweet orange production

Quaggio

Mattos

Boaretto

2011

Sci. agric. (Piracicaba, Braz.)

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Fruit yield and quality of citrus trees (Citrus spp.) is markedly affected by potassium (K) fertilization. Potassium chloride is the major source of K, even though other sources are also available for agricultural use when crops are sensitive to chloride or where potential for accumulation of salts in soils exists. Only few studies addressed the effect of K sources on yield and quality of citrus fruits. Therefore, the present study was conducted to evaluate K 2 SO 4 and KCl fertilizer sources at 0, 100, 200, and 300 kg ha -1 per year K 2 O on fruit yield and quality of 'Pêra' and 'Valencia' sweet orange trees in the field. The experiments were carried out in a 4 × 2 factorial design under randomized complete blocks, with four replicates from 2001 to 2004. Fruit yield increased with increased K fertilization. Nutrient rate for maximum economic yield of 'Pêra' was 200 kg ha -1 of K 2 O and for 'Valencia', 270 kg ha -1 of K 2 O. Differences were attributed to higher production and K exportation by fruits of 'Valencia'. Fruit mass also increased with increased K fertilization what decreased total soluble solids in juice, and which correlated with leaf K concentrations for 'Valencia' (r = 0.76; p < 0.05). Leaf Ca, Mg and B concentrations decreased with K rates. Additionally, leaf Cl increased up to 440 mg kg -1 with KCl rates, even though no negative effects occurred either on fruit yield or quality of trees.

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Additional nitrogen fertilization affects salt tolerance of lemon trees on different rootstocks

Cited by 57 publications

References 36 publications

Water salinity and nitrogen fertilization in the production and quality of guava fruits

Water salinity and nitrogen fertilization in the production and quality of guava fruits

Mechanisms of Cl^‐ transport contributing to salt tolerance

Sources and rates of potassium for sweet orange production

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Additional nitrogen fertilization affects salt tolerance of lemon trees on different rootstocks

Cited by 57 publications

References 36 publications

Water salinity and nitrogen fertilization in the production and quality of guava fruits

Water salinity and nitrogen fertilization in the production and quality of guava fruits

Mechanisms of Cl‐ transport contributing to salt tolerance

Sources and rates of potassium for sweet orange production

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Mechanisms of Cl^‐ transport contributing to salt tolerance