Ionic Accumulation in Citrus as Influenced by Rootstock and Scion and Concentration of Salts and Boron in the Substrate

Cooper, William C.; Gorton, B S; Olson, E. O.

doi:10.1104/pp.27.1.191

Cited by 53 publications

(13 citation statements)

References 13 publications

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“…Such effect was also described for alfalfa (Wallace and Bear, 1949) and avocados (Jaime et al, 1992), even though no specific mechanism at the plant level was proposed to explain such results. Conversely, K uptake by plants is increased with B supply (Cooper et al, 1952;Schon et al, 1990;Obermeyer et al, 1996;Quaggio et al, 2003;Grassi et al, 2004). In this case, B facilitates K uptake probably because of increased hyperpolarization of the plasma membrane (Schon et al, 1990).…”

Section: Resultsmentioning

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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Section: Resultsmentioning

confidence: 99%

Sources and rates of potassium for sweet orange production

Quaggio

Mattos

Boaretto

2011

Sci. agric. (Piracicaba, Braz.)

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“…These differences usually reflect the plant's ability to restrict Cl − translocation from the roots to the shoots or scions. Salt tolerance of avocado, grapefruit, and orange is closely related to the Cl − accumulation properties of the rootstocks (Cooper et al, 1951;Cooper, 1961). In fact, Cl − toxicity can eventually overshadow citrus's general response to salinity, particularly in those rootstocks when Cl − is not excluded from the scion (Shalhevet and Levy, 1990).…”

Section: Citrus Tolerance To Chloridementioning

confidence: 98%

Assessing the suitability of saline wastewaters for irrigation of Citrus spp.: Emphasis on boron and specific-ion interactions

Grattan

Díaz

Pedrero

et al. 2015

Agricultural Water Management

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“…Trifoliate oranges belong to the Poncirus genus and their hybrids confer tolerance to CTV and they are considered to be poor Cl − excluders (Cooper, 1961), although they have a great capacity to exclude Na + at low salinity levels (Walker, 1986). 'Cleopatra' mandarin was shown to be a Cl − excluder (Cooper et al, 1952;Zekri and Parsons, 1992), which explains the salt-tolerant nature of this rootstock. According to Moya et al (2003), if Cl − absorption is not limited at the root level, these ions will be translocated to the leaves via transpiration and will cause necrosis and eventually defoliation.…”

Section: Introductionmentioning

confidence: 98%