For oilseed rape crops, wet weather is one of the biggest risk factors for boron deficiency, with the micronutrient easily leaching out of soils.
This is according to Chris Bond, FMC commercial technical manager, who advises growers to monitor for micronutrient deficiencies following the wet winter.
Mr Bond says the first step to prevent micronutrient deficiencies should be tissue testing in the early spring when crops are coming out of dormancy.
“Even though farmers are aware of the requirement for boron in OSR, our tissue testing results commonly highlight this mineral to be deficient in many OSR crops,” he says.
“For boron deficiencies, liquid applications of boron should be applied at stem extension typically between February and April.”
“It is important for growers to remember that micronutrient deficiencies are often easily remedied through nutritional applications but getting on top of the issue as early as possible before visual symptoms develop will help ensure yield targets are reached later down the line.”