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Silicon application could be a beneficial solution in combating cabbage stem flea beetle attacks on oilseed rape crops, according to two experienced agronomists. Cabbage stem flea beetle is a significant pest for oilseed rape, known for causing damage to newly established plants. By increasing silicon levels in the plants, a physical barrier is created against pests and pathogens, making the plants more resilient to attacks. One agronomist has observed success in reducing feeding damage from cabbage stem flea beetle by applying two to three rounds of silicon treatments.

Sustainable Ag Solutions’ Chris Coates, based in Yorkshire, has been advocating for silicon application instead of insecticides for the past three years. He recommends early application of silicon, preferably at the standard cotyledon stage, to enhance the plant’s ability to withstand pest attacks. It is important to note that silicon is not a control for flea beetle, so applications should be made preventatively. The cost-effective nature of silicon treatment makes it a viable option for pest control without relying on insecticides.

Another agronomist, Dan Lievesley from DJL Agriculture, supports the use of silicon for enhancing crop resilience against various stress factors, including pest and disease pressures. By utilizing potassium silicate, Dan has successfully managed flea beetle attacks, lodging, and Nutrient Management in crops. He suggests a regimen of three applications of Zeme before Christmas for optimal results.

Dr. David Marks, co-founder of Levity Crop Science, emphasizes the multiple benefits of silicon for crop health, including its role in stress hormone production, antioxidant properties, and nutrient transport. Silicon application not only improves crop resilience but also enhances nitrogen recovery, especially in low soil nitrogen conditions. Overall, incorporating silicon into pest management strategies can contribute to healthier and more resilient oilseed rape crops.

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