Efficiency of Magnesium Use by Common Bean Varieties Regarding Yield, Physiological Components, and Nutritional Status of Plants

Abstract

The magnesium (Mg) use efficiency in the selection of common bean (Phaseolus vulgaris L.) varieties may contribute to increased nutritional status and grain yield. Therefore, the present study aimed to assess common bean varieties following the application of Mg regarding productivity (yield), soil fertility, physiological components, and nutritional status. The experiment was conducted in a completely randomized design in a 5 × 2 factorial scheme with three replicates. Five common bean varieties [BRS Estilo, IPR Tangará, IPR Campos Gerais (CG), IAPAR 81, and BRS Ametista] supplemented with two Mg concentrations [low (0 mg kg −1 ) and high (100 mg kg −1 )] using magnesium chloride (MgCl 2 ) as a source in an Ustoxix Quatzipsamment were assessed. The yield of shoot dry weight (SDW) and grains varied significantly between varieties and Mg rates. The high Mg concentration has negatively affected the yield of SDW and grains of variety IPR Tangará, and the opposite was observed for the other varieties. The physiological components associated with photosynthesis are directly related to the yield of SDW and grains. The concentrations of phosphorus (P), calcium (Ca), sulfur (S), and boron (B) in leaves and of S, B, iron (Fe), and manganese (Mn) in grains differed among the varieties and interactions of rates and varieties for B, indicating the presence of genetic factors in nutrient uptake.

Critical Leaf Magnesium Thresholds and the Impact of Magnesium on Plant Growth and Photo-Oxidative Defense: A Systematic Review and Meta-Analysis From 70 Years of Research

“…Mg directly affects Rubisco activity and activation by binding to the carbamylated Rubisco side chain and to the catalytic chaperone Rubisco activase (Hazra et al, 2015), hence less Mg supply decreases net CO 2 assimilation rates. Numerous reports emphasize the positive effect of Mg supply on net CO 2 assimilation of various species and under various growing conditions, for instance, in hydroponic systems (Laing et al, 2000; Ding et al, 2006; Tränkner et al, 2016; Samborska et al, 2018), soil or sand filled pots (Yang et al, 2012; Canizella et al, 2015; Peng et al, 2015) or in the field (Tang et al, 2012). Only in cases where very early Mg deficiency symptoms were studied was there no effect of Mg on net CO 2 assimilation or photosynthetic capacity (Chen C. T. et al, 2018; Koch et al, 2018).…”

Root phenotypes for improved nutrient capture: an underexploited opportunity for global agriculture

“…Despite longstanding reports of crop genotypic variation in response to suboptimal Mg availability (Canizella et al ., ), mechanisms underlying this variation are virtually unknown. As with Ca, the majority of Mg acquired by roots is transported via transpiration‐driven mass flow (Barber, ).…”

Evaluation of the agricultural potential of the serpentinite rock as a soil remineralizer

“…In their work, comparing the effect of Mg fertilization in five common bean varieties, Canizella et al (2015) reported that the BRS Estilo was included in the group of varieties with the greatest content of Mg, regardless of the rate applied. There was no effect of the type of Mg source in the plant dry matter weight, and this element was not the limiting factor.…”