Soil & Water Res., 2024, 19(3):168-175 | DOI: 10.17221/43/2024-SWR

Impact of intercrops on soil loss and surface runoff from sloping maize fieldsOriginal Paper

Jan Gregar1*, Jan Petrů1, Jana Kalibová1, Věra Ürge1, David Kincl1,2, Jan Vopravil1,2
1 Department of Land Use and Improvement, Faculty of Environmental Sciences,Czech University of Life Sciences Prague, Prague, Czech Republic
2 Research Institute for Soil and Water Conservation, Prague-Zbraslav, Czech Republic

Water erosion poses a significant threat to more than 50% of agricultural land in the Czech Republic. Maize (Zea mays L.) is particularly susceptible to soil erosion, with the bare soil space between maize rows exposed to erosive agents. Intercropping has emerged as a potential solution to mitigate soil erosion risks in maize cultivation. A series of soil erosion field experiments were conducted from 2022 to 2023 using natural rainfall to investigate the influence of selected intercrop mixtures during the growing season on sediment yields and surface runoff volume. The results revealed a gradual decrease in surface runoff volume and sediment yields over the growing season. Significantly reduced surface runoff volume and soil loss were observed in two tested intercropped plots S2 – rye (Secale cereale) and incarnate clover (Trifolium incarnatum); S3 – ryegrass only (Lolium)), compared to a control plot managed conventionally with maize (S1). Surface runoff volume and soil loss from S2 and S3 reached 2.57–43.5% and 1.26–11.65% of the control plot, respectively. These findings highlight the soil conservation effect of intercrop technologies (S2 and S3) in mitigating soil erosion in maize cultivation. The importance of vegetation cover in reducing soil erosion intensified over time. Intercropping holds promise as a sustainable agricultural management strategy for sloping maize fields.

Keywords: agricultural management; corn; maize; soil conservation; soil erosion; water erosion

Received: May 2, 2024; Revised: July 31, 2024; Accepted: August 28, 2024; Prepublished online: September 9, 2024; Published: September 25, 2024  Show citation

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Gregar J, Petrů J, Kalibová J, Ürge V, Kincl D, Vopravil J. Impact of intercrops on soil loss and surface runoff from sloping maize fields. Soil & Water Res. 2024;19(3):168-175. doi: 10.17221/43/2024-SWR.
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