Cadmium Accumulation in a Tropicalized Lettuce Variety Under Overfertilization Simulation

Nunes, Ellen Aparecida; Kiyota, Eduardo; Andrade, Sara Adrián López de

doi:10.1002/clen.202100065

Cited by 2 publications

(3 citation statements)

References 82 publications

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“…When the concentration of Cd in the soil exceeds a certain limit, it can inhibit the growth of plants [16][17][18]. As a type of vegetable that is widely consumed around the world, lettuce (Lactuca sativa) can be enriched in Cd and have a high tolerance to Cd in the soil [15,[18][19][20][21][22][23][24][25][26][27], which results in plants that can contain excessive amounts of hidden Cd. Cd easily accumulates in human tissues through the food chain, and this can endanger the health of the population.…”

Section: Introductionmentioning

confidence: 99%

“…Typical agricultural practices, such as plowing and covering the soil, can reduce the content of Cd contaminants on the soil surface, thereby mitigating the risk of Cd accumulation in vegetables [28]. Appropriate fertilization measures can decrease the risk of the pollution of soil with Cd by regulating its bioavailability in the soil [19,27,[29][30][31]. The addition of conditioners to the soil can also mitigate the risk of soil becoming polluted with Cd.…”

Section: Introductionmentioning

confidence: 99%

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Impact of Physical Interventions, Phosphorus Fertilization, and the Utilization of Soil Amendments on the Absorption of Cadmium by Lettuce Grown in a Solar-Powered Greenhouse

Zhang,

Hao,

Xiong

et al. 2024

Biology

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This study aimed to evaluate the effects of physical measures and the applications of phosphorus fertilizer and soil conditioner on the growth of lettuce (Lactuca sativa) and its uptake of cadmium (Cd). In a solar greenhouse that contained soil enriched with cadmium (Cd) (1.75 ± 0.41 mg/kg) with lettuce used as a test plant, field experimental methods were utilized to explore the influence of physical measures, such as deep plowing and soil covering, and the applications of phosphorus fertilizer, including diammonium phosphate (DAP), calcium magnesium phosphate (CMP), and calcium superphosphate (SSP), and soil conditioners, such as biochar, attapulgite clay, and nano-hydroxyapatite, on the uptake of Cd in lettuce. The results indicated that the concentrations of Cd in the aboveground parts of lettuce were 1.49 ± 0.45, 1.26 ± 0.02, 1.00 ± 0.21, and 0.24 ± 0.13 mg/kg when the soil was plowed 30, 40, and 50 cm deep, respectively, and when the soil was covered with 15 cm, this resulted in reductions of 27.5%, 38.3%, 51.4%, and 88.4%, respectively, compared with the control treatment that entailed plowing to 15 cm. When 75, 150, and 225 kg/ha of phosphorus pentoxide (P2O5) were applied compared with the lack of application, the contents of Cd in the aboveground parts of lettuce increased by 2.0%, 54.5%, and 73.7%, respectively, when DAP was applied; by 52.5%, 48.5%, and 8.1%, respectively, when CMP was applied; and by 13.1%, 61.6%, and 90.9%, respectively, when SSP was applied. When the amounts of biochar applied were 0, 2, 4, 6, 8, 10, and 12 t/ha, the contents of Cd in the aboveground parts of lettuce were 1.36 ± 0.27, 1.47 ± 0.56, 1.80 ± 0.73, 1.96 ± 0.12, 1.89 ± 0.52, 1.44 ± 0.30, and 1.10 ± 0.27 mg/kg, respectively. Under concentrations of 0, 40, 80, 120, 160, and 200 kg/ha, the application of nano-hydroxyapatite resulted in Cd contents of 1.34 ± 0.56, 1.47 ± 0.10, 1.60 ± 0.44, 1.70 ± 0.21, 1.31 ± 0.09, and 1.51 ± 0.34 mg/kg, respectively. The concentrations of Cd in the aboveground parts of lettuce treated with attapulgite clay were 1.44 ± 0.48, 1.88 ± 0.67, 2.10 ± 0.80, 2.24 ± 0.75, 1.78 ± 0.41, and 1.88 ± 0.48 mg/kg, respectively. In summary, under the conditions in this study, deep plowing and soil covering measures can reduce the concentration of Cd in the aboveground parts of lettuce. The application of phosphorus fertilizer increased the concentration of Cd in the aboveground parts of lettuce. The application of higher amounts of DAP and SSP led to greater concentrations of Cd in the aboveground parts of lettuce. The application of higher amounts of CMP caused a lower concentration of Cd in the aboveground parts of lettuce. When biochar, attapulgite clay, and nano-hydroxyapatite were applied, the concentration of Cd in the aboveground parts of lettuce increased in parallel with the increase in the concentration of application when low amounts were applied. In contrast, when high amounts were applied, the concentration of Cd in the aboveground parts of lettuce began to decrease.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Impact of Physical Interventions, Phosphorus Fertilization, and the Utilization of Soil Amendments on the Absorption of Cadmium by Lettuce Grown in a Solar-Powered Greenhouse

Zhang,

Hao,

Xiong

et al. 2024

Biology

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“…The addition of high rates of potassium chloride (KCl) modifies the soil solution pH , and increases the ionic strength, which could increase the solubilization of nutrients and undesired elements Lagas et al, 1984;Nunes et al, 2022). Additionally, prolonged potassium overfertilization has been associated with a reduction of Ca and Mg accumulation in the soil and its consequent lower uptake by the plants (Gransee and Führs, 2013;Hogg, 1960;Jakobsen, 1993;Ohno and Grunes, 1985).…”

Section: General Introductionmentioning

confidence: 99%

Fertilizer interactions with micronutrients in tropical volcanic soils

Corrales¹

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Background information for the development of this research:Around the year 2010, we studied nutrient management for papaya (Carica papaya L.) production systems in Costa Rica. The main reason to study these production systems was that papaya is principally grown by small farmers in Costa Rica, who generally operated under low input conditions and limited technical assistance. In addition, there was a general lack of essential information about the correct management of this crop. Firstly, we characterized the nutrient uptake for a high-yielding papaya hybrid (Figure 1.1) . As a result, we found that papaya absorbed amounts of nutrients that exceed the quantities typically applied by farmers, and the fertilizer amounts previously applied were not compensating for total plant nutrient uptake. The application of lower quantities of fertilizer compared to the plant nutrient uptake have several consequences for growers and for the soil system, for instance low productivity per unit area, and depletion of nutrients. Additionally, the nutrient management in papaya production systems is difficult because of the variation of the nutrient requirements over time. Papaya nutrient uptake is concentrated in short periods of time (Figure 1.1), which complicates the correct supply of highly demanded nutrients according to their uptake by the plant. Excessive input of a specific fertilizer in the soil could produce side effects like competition with other ions and increased leaching rates.According to previous observations of the high nutrient demand for the papaya production systems, the growers have increased the addition of fertilizer rates (basically N-P-K) considerably, but this decision lacked agronomical and environmental evidence that justify this practice. Consequently, we have developed field experiments to evaluate the agronomical effects (possible decreasing of yield gaps) of the application of increased N and K fertilizer rates in papaya. The results of this experiment for a dystric volcanic soil are shown in Figure 1.2. From these experiments we observed a noticeable increase in the number of fruits per plant when adding high rates of N and K. These results thus support the use of high fertilizer rates in papaya production systems.The decision to apply increased fertilizer rates for papaya production systems, however, did not consider the environmental consequences of the movement of concentrated solutions through these soils mainly because the possible consequences were not completely understood. Concerned about potential environmental implications due to increased nutrient management in papaya production systems, we realized that the addition of high fertilizer rates is a common practice in other large-scale agricultural production systems and is common for intensive production systems developed in permeable volcanic soils.For instance, more than 43.000 hectares are currently cultivated with bananas in Costa Rica (CORBANA, 2022), receiving high rates of N-P-K fertilizers to account for the high yields required by...

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Cadmium Accumulation in a Tropicalized Lettuce Variety Under Overfertilization Simulation

Cited by 2 publications

References 82 publications

Impact of Physical Interventions, Phosphorus Fertilization, and the Utilization of Soil Amendments on the Absorption of Cadmium by Lettuce Grown in a Solar-Powered Greenhouse

Impact of Physical Interventions, Phosphorus Fertilization, and the Utilization of Soil Amendments on the Absorption of Cadmium by Lettuce Grown in a Solar-Powered Greenhouse

Fertilizer interactions with micronutrients in tropical volcanic soils

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