Environmental aspects of agriculture chemicalization with resource-saving technology of cultivation of soy

Suleimenova, Naziya; Filipova, M.; Zharaspayeva, S.M.

doi:10.26577/eje-2016-2-872

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“…2). These are such heavy metals as cadmium -no more than 0.5 mg•kg -1 (with maximum permissible concentration (MPC) 0.01 ±0.005 mg•m -3 ), cobalt -5.0 mg•kg -1 (0.05 ±0.01 mg•m -3 ), arsenic -not more than 2.0 mg•kg -1 (0.04 ±0.01 mg•m -3 ), nickel -not more than 4.0 mg•kg -1 (0.05 mg•m -3 ), lead -not more than 32 mg•kg -1 (0.01 ±0.005 mg•m -3 ), copper -not more than 33 mg•kg -1 (1 ±0.05 mg•m -3 ), and zinc -not more than 55 mg•kg -1 [SULEIMENOVA et al 2016b].…”

Section: Resultsmentioning

confidence: 98%

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Journal of Water and Land Development

2022

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The article presents the results of monitoring the aftereffect of the use of excessive zonal doses of mineral fertilisers on soil contamination with heavy metals (HM). With traditional soybean cultivation technology, the level of soil contamination when applying excessive doses (N 60 P 180 K 90 ) of fertilisers is quite high and indicates violations of the ecological balance of the agroecosystem. By the nature of the accumulation of heavy metals in meadow-chestnut soil, depending on the application of the studied doses (P 60 K 30 , N 30 P 60 K 30 , N 60 P 180 K 90 ) of fertiliser, the content of HM (Pb, Zn, Cd) increases. The greatest contamination of the soil with Cu was revealed, the content of which increases to 3.2 mg•kg -1 of soil, which is higher than the threshold of the maximum permissible concentration (MPC) -3.0 mg•kg -1 . According to the level of contamination of the soil with copper, it belongs to the highly dangerous classes. In a comparative assessment of the level of soil contamination with HM, optimal norms of mineral fertilisers have been established, namely, against the background of effective resource-saving technology for growing soybeans. The application of fertilisers at a dose of P 60 K 30 and N 30 P 60 K 30 does not significantly affect the level of soil contamination with HM, optimises the ecological state and nutrient regime of the soil, preserves and restores soil fertility indicators, and increases soybean productivity. This resource-saving technology provides a safe environment for soybean cultivation and a significant increase of 34.5-38.6% in crop productivity (0.53-0.76 Mg•ha -1 ) and yield (2.57 Mg•ha -1 ).

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Section: Resultsmentioning

confidence: 98%

“…It should be noted that the content of the mobile form of heavy metals in the soil is dynamic over time. The reasons for the changes can be different, in most cases, fluctuations are explained by age-related changes in plants in the intensity of absorption of chemical elements [SULEIMENOVA et al 2016a].…”

Section: Resultsmentioning

confidence: 99%

Journal of Water and Land Development

2022

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Environmental aspects of agriculture chemicalization with resource-saving technology of cultivation of soy

Cited by 1 publication

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Journal of Water and Land Development

Journal of Water and Land Development

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