Early applications of boron and molybdenum key for OSR establishment this autumn

Written by Charlotte Cunningham from CPM Magazine

After 40% of oilseed rape crops in 2020 were reportedly lacking in the micronutrient boron, growers are being urged to make early applications this autumn to support crop establishment. Charlotte Cunningham reports. FMC commercial technical manager for crop nutrition, Chris Bond, explains that ongoing FMC tissue and soil analysis has identified micronutrition deficiencies, in particular boron and molybdenum, are increasing. He warns, without these vital elements, crops could be compromised. “Boron plays a crucial role in cell wall production, so deficiency will reduce cell wall integrity and impact disease resistance, whereas molybdenum is essential for nitrogen assimilation. “If OSR crops are deficient in boron and molybdenum, they are much more susceptible to issues. Yield can be significantly affected because pod and seed numbers can be reduced.” Chris explains that OSR is most vulnerable in the infant stages of growth, so making foliar micronutrient applications early on should be a priority. “If early deficiencies aren’t avoided, this could potentially hold crops back from reaching the highest market prices at harvest,” he adds. To prevent deficiencies and to achieve robust establishment, applications of Bo-La, which contains molybdenum and boron, should be applied at the four to six leaf stage. This will give…
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