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OBJECTIVE: Prevent weed development

  • Controlling weeds on plots is a key issue. Indeed, soybean is a plant that covers the soil slowly and certain weeds can affect productivity and the quality of the harvest. There are several ways to control weeds:
    • First, crop rotation can break the cycle of certain weeds by alternating spring crops and autumn crops.
    • Soil preparation techniques can also influence the presence of weeds. Ploughing and the stale seed bed method can reduce weed seed stocks.
    • Finally, there are chemical (post sowing, pre and postemergence)
      and mechanical solutions to eliminate weeds.
  • As some varieties are sensitive and may show signs of phytotoxicity, the following recommendations should be followed:
    • Metobromuron: to avoid lack of selectivity, never spray more than 4 days after sowing and adapt the dosage to the soil composition. Molecule recommended for Ambrosia.
    • Pendimethalin: a lack of selectivity can occur especially in sandy soils.
    • Pulsar 40®: in cases of heavy rain, high temperature or excessive plant development, yellow marks may appear but they disappear quickly.
    • Be careful: Pulsar® and CORUM® can cause molecules from previously used herbicide to be released from the sprayer and filter, leading to soybean phytotoxicity. Sprayers must be carefully cleaned with suitable products before using Pulsar®.

To find out more, download our soybean technical guide: click here.