Aluminium content in leaf and root of oat (Avena sativa L.) grown on pseudogley soil

Abstract

Acid soils are not suitable for cultivation of agricultural crops as increased concentrations of hydrogen ions hinder the uptake of most nutrients. The adverse effects of increased soil acidity also include release of aluminium (Al) ions from the adsorption complex and hence, an increase in their concentration in the soil solution and plants. Aluminium ions block phosphorus and potassium uptake by the crop, thus leading to disturbance of plant growth and development, as well as to a substantial decline in crop yield and quality. This suggests that the use of such soils is not justified in terms of successful plant production. The objective of this study was to use liming to neutralise excess acidity of pseudogley soil under oat crop and evaluate the effect of soil pH improvement measures on the aluminium content of both the leaf and root of oat (Avena sativa L.) cv. Mediteran. Three liming treatments were employed [1.0, 3.0 and 4.0 t ha -1 calcium carbonate (CaCO 3 )]. The treatments with 3.0 and 4.0 t ha -1 CaCO 3 induced no Al presence in oat plants, suggesting that liming in these treatments was successful in terms of aluminium content.

Effects of long term exposure to aluminium stress on the accumulation and distribution of K+, Na+, Ca2+, Mg2+, Fe2+ and Clin rice and chickpea plants

“…Al ions blocked K + uptake in oat (6) and in soybean plants (7) . Al reduced the absorption of K + in four species of coffee (8) .…”

Aluminum in plant: Benefits, toxicity and tolerance mechanisms

“…Additionally, P deficiency is a major concern in acidic soils as Al has a high affinity to P and forms insoluble Al-P compounds in soils (Magalhaes et al, 2018). Numerous studies have reported that Al reduces P uptake and utilization in several plant species such as Eucalyptus (Teng et al, 2018), oat (Avena sativa) (Djuric et al, 2011), Citrus grandis (Guo et al, 2017) and soybean (Chen et al, 2019b). These studies indicate that Al toxicity results in plant nutritional imbalance, which can affect the growth and productivity of crops.…”

Soil fertility under different tillage systems in sugarcane expansion area

“…depths would be expected if gypsum (CaSO 4 ) was added to the soil (Shainberg et al, 1989), instead of only lime (CaCO 3 ). According to Djuric et al (2011), the main effect of soil acidity is Al 3+ toxicity, with the Al 3+ saturation (m) index being the best measure to assess this component of soil acidity and indicates the percentage of the effective soil cation exchange capacity (t) that is occupied by Al 3+ . Differences were found (p < 0.05) between treatments regarding Al 3+ saturation (Table 2) at 0-0.2 and 0.2-0.4 m soil depth.…”