Effects of K-Mg ratio on growth and cation nutrition of<i>Vitis vinifera</i>L. cv. “Dattier de Beiruth” grafted on SO4 rootstock

Toumi, Mohamed; Nedjimi, Bouzid; Halitim, Amor; Garcia, M.

doi:10.1080/01904167.2015.1087564

Cited by 10 publications

(14 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Antagonistic effects of K on Mg, especially under inadequate Mg supply conditions, are a crucial factor influencing Mg-related functions in several crops, including tomato [42,44], green bean [45], potato [46], rice [47], grape [48], and apple [49]. The present study showed that an increasing K concentration in solution adversely affected the leaf Ca and Mg concentrations.…”

Section: K Application Influenced Cherry Tomato Growth By Regulating mentioning

confidence: 57%

“…Another study reported that rice shoot DW decreased by 12.9% at high K/Mg ratios in solution, whereas root DW increased by 12.1% as sugar partitioning and root morphological parameters changed [53]. Toumi et al (2016) also reported that Mg uptake was inhibited by an increase in K/Mg in the nutrient solution in Vitis vinifera, but no significant differences in leaf Ca concentration were detected among treatments [48].…”

Section: K Application Influenced Cherry Tomato Growth By Regulating mentioning

confidence: 99%

See 1 more Smart Citation

Critical Leaf Magnesium Concentrations for Adequate Photosynthate Production of Soilless Cultured Cherry Tomato—Interaction with Potassium

et al. 2020

View full text Add to dashboard Cite

Magnesium (Mg) is essential to many plant physiological and biochemical processes; however, understanding how Mg nutrition quantitatively affects the production, partitioning, and utilization of photoassimilates is still lacking, especially in soilless culture systems. We focused on the roles of Mg in yield formation and interactions with potassium (K) nutrition of cherry tomato. Cherry tomato yield, photosynthetic parameters, dry matter weight, and K, Mg, and calcium (Ca) uptake were investigated in two soilless experiments with seven Mg levels and five K levels. The results showed that low (<1 mM) and high (>4 mM) Mg supply limited cherry tomato yield by decreasing dry matter accumulation by 22.6–78.1% and harvest index by 13.9–40.7%. The critical leaf Mg concentrations required for adequate photosynthate production in the first and second harvest periods were 4.67 and 5.52 g·kg−1, respectively. However, over-supply of Mg reduced leaf K and Ca concentrations and limited plant uptake of K and Ca. Moreover, adjusting K concentrations in solution could influence plant Mg functions in photosynthesis and, therefore, cherry tomato growth. Overall, balanced Mg and K application increased Mg, K, and Ca uptake, as well as Mg concentrations in leaves, which could maintain a sustainable photosynthetic rate and plant dry matter formation.

show abstract

Section: K Application Influenced Cherry Tomato Growth By Regulating mentioning

confidence: 57%

Section: K Application Influenced Cherry Tomato Growth By Regulating mentioning

confidence: 99%

Critical Leaf Magnesium Concentrations for Adequate Photosynthate Production of Soilless Cultured Cherry Tomato—Interaction with Potassium

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Antagonistic effects of K on Mg, especially under inadequate Mg supply conditions, are a crucial factor influencing Mg-related functions in several crops, including tomato [26], sugarbeet [41], green bean [42], potato [43], rice [44], grape [45] and apple [46]. The present study showed that an increasing K concentration in solution adversely affected the leaf Ca and Mg concentrations.…”

Section: K Application Influenced Cherry Tomato Growth By Regulating mentioning

confidence: 61%

“…Another study reported that rice shoot DW decreased by 12.9% at high K/Mg ratios in solution, whereas root DW increased by 12.1% as sugar partitioning and root morphological parameters changed [44]. Toumi et al (2016) also reported that Mg uptake was inhibited by increase of K/Mg in the nutrient solution in Vitis vinifera, but no significant differences in leaf Ca concentration were detected among treatments [45].…”

Section: K Application Influenced Cherry Tomato Growth By Regulating mentioning

confidence: 99%

Magnesium supply regulate leaf nutrition and plant growth of soilless cultured cherry tomato - interaction with potassium

Guan

Wang

Bin

et al. 2020

Preprint

View full text Add to dashboard Cite

Background: Magnesium (Mg) is essential to many plant physiological and biochemical processes; however, a quantitative understanding of how Mg nutrition affects the production, partitioning and utilization of photoassimilates is still lacking, especially for soilless culture system. We focused on the roles of Mg in yield formation and interactions with potassium (K) nutrition of cherry tomato. Cherry tomato yield, leaf Mg concentration, photosynthetic parameters, dry matter weight and K, Mg and calcium (Ca) uptake were investigated in two soilless experiments with seven Mg levels and five K levels.Results: Low (<1 mM) and high (>4 mM) Mg supply limited cherry tomato yield by decreasing 22.6-78.1% dry matter accumulation and 13.9-40.7% harvest index. The critical leaf Mg concentrations required for adequate photosynthate production in the first and second harvest periods were 4.67 and 5.52 g kg –1 , respectively. But over-supply of Mg disturbed leaf K and Ca concentrations, limiting the plant K and Ca content. Moreover, adjusting K concentrations in solution is a crucial factor influencing plant Mg functions, and therefore cherry tomato growth.Conclusion: Balanced Mg and K application increased Mg, K, and Ca uptake by cherry tomato, as well as Mg concentrations in leaves which could maintain a sustainable photosynthetic rate and plant dry matter formation.

show abstract

“…However, the best K dose applied to increase the K content 20 cm down the soil (close to the sufficiency level of young vines), as well as the impact of such dose on K contents in the leaves and on plant growth parameters, mainly in sandy-texture soils presenting low cation exchange capacity (CEC), remain poorly know. On the other hand, magnesium (Mg) deficiency symptoms can be observed in the leaves of young vines grown in soil presenting high exchangeable K content, and even in leaves presenting rachis desiccation, which is a physiological disorder affecting producing vines (Coombe, 1987;Christensen, 1991;Hall, 2011;Bachteler et al, 2013;Toumi et al, 2016). However, there is insufficient knowledge about whether the application of K doses to the soil, and the use of limestones capable of unbalancing the Ca: Mg ratio in it, can cause Mg deficiency in the tissue of plants grown in the soil and under climatic conditions of Campanha Gaúcha region.…”

Section: Introductionmentioning

confidence: 99%

Plant growth and nutritional status of leaves from young grapevines grown in soil subjected to potassium and limestone applications

Ciotta

Ceretta

Oliveira

et al. 2020

Idesia

View full text Add to dashboard Cite

show abstract

Effects of K-Mg ratio on growth and cation nutrition ofVitis viniferaL. cv. “Dattier de Beiruth” grafted on SO4 rootstock

Cited by 10 publications

References 10 publications

Critical Leaf Magnesium Concentrations for Adequate Photosynthate Production of Soilless Cultured Cherry Tomato—Interaction with Potassium

Critical Leaf Magnesium Concentrations for Adequate Photosynthate Production of Soilless Cultured Cherry Tomato—Interaction with Potassium

Magnesium supply regulate leaf nutrition and plant growth of soilless cultured cherry tomato - interaction with potassium

Plant growth and nutritional status of leaves from young grapevines grown in soil subjected to potassium and limestone applications

Contact Info

Product

Resources

About