What should I do if rapeseed only blooms? In some poor soil plots, there may be a phenomenon in which rapeseed is only flowering, which is often said to be unrealistic. In fact, this is probably due to the lack of boron in rapeseed. When rapeseed is deficient in boron in the soil and cannot supplement boron in time, it will cause its normal growth and development, and the formation of flowers will be unreal, resulting in a significant decrease in rapeseed yield.
The symptoms of boron deficiency in different stages of rapeseed are different. Boron deficiency in seedling stage can lead to poor root development, slow growth, less roots, severe browning of the epidermis, cracking and even necrosis of the cortex, and easy death. In the bud stage, the boron-deficient leaves are thick and fragile, the leaf edges are re-rolled, the leaf surface is uplifted, the unevenness is uneven, the leaves are chlorotic and turn into blue-purple spots, the flower-deficient boron flower is degraded, the pollen development is abnormal, and the flowers are formed.
Boron deficiency in rapeseed requires timely supplementation of boron. A single element of boron fertilizer can be used. It is best to spray it on the foliar surface. Foliar spray can be quickly absorbed by the plant to quickly relieve the symptoms of boron deficiency. At present, there are more commercial single-element fertilizers on the market. Rape growers can make reasonable adjustments according to local soil conditions, and take measures as early as possible to minimize losses.
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