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Effects of low-till parabolic subsoiling frequency and furrow irrigation frequency on maize in the Yazoo-Mississippi Delta

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  • Rix, Jacob P.
  • Lo, Tsz Him
  • Gholson, Drew M.
  • Pringle, H.C. (Lyle)
  • Spencer, G. Dave
  • Singh, Gurbir

Abstract

Naturally forming or mechanically induced hardpans limit water infiltration and crop productivity in many agricultural regions including the Mid-South U.S. This research was conducted to determine whether low-till parabolic subsoiling and furrow irrigation interact to influence soil water dynamics and maize production in the Mid-South. The factorial effects of subsoiling frequency (no subsoiling, NS; subsoiling only before cotton, CS; subsoiling only before maize, MS; and subsoiling every year, ES) × irrigation frequency (no irrigation, NI; low-frequency irrigation, LI; and high-frequency irrigation, HI) on infiltration, grain yield, and profit over specified costs were investigated for the maize portion of a maize-cotton rotation experiment in a silty clay loam soil near Tribbett, Mississippi. Subsoiling before maize improved the infiltration of irrigation (p < 0.05) but not the infiltration of in-season rainfall for irrigated treatments. By subsoiling before maize, high-frequency irrigation maximized grain yield in just one—rather than three—out of five years. Subsoiling before maize also increased non-irrigated yield in all five years. Overall, the combination of subsoiling only before maize and low-frequency irrigation achieved the largest average profit and a relatively small risk. These findings support the practice of low-till parabolic subsoiling before maize as a hydrologically effective and economically viable strategy to conserve freshwater resources in the Mid-South.

Suggested Citation

  • Rix, Jacob P. & Lo, Tsz Him & Gholson, Drew M. & Pringle, H.C. (Lyle) & Spencer, G. Dave & Singh, Gurbir, 2022. "Effects of low-till parabolic subsoiling frequency and furrow irrigation frequency on maize in the Yazoo-Mississippi Delta," Agricultural Water Management, Elsevier, vol. 274(C).
    • Handle: RePEc:eee:agiwat:v:274:y:2022:i:c:s0378377422004929
    DOI: 10.1016/j.agwat.2022.107945
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    References listed on IDEAS

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    1. Kuang, Naikun & Tan, Dechong & Li, Haojie & Gou, Qishu & Li, Quanqi & Han, Huifang, 2020. "Effects of subsoiling before winter wheat on water consumption characteristics and yield of summer maize on the North China Plain," Agricultural Water Management, Elsevier, vol. 227(C).
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    Cited by:

    1. Feng, Zhuangzhuang & Miao, Qingfeng & Shi, Haibin & Feng, Weiying & Li, Xianyue & Yan, Jianwen & Liu, Meihan & Sun, Wei & Dai, Liping & Liu, Jing, 2023. "Simulation of water balance and irrigation strategy of typical sand-layered farmland in the Hetao Irrigation District, China," Agricultural Water Management, Elsevier, vol. 280(C).

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