Boron Deficiency in Kola
Boron deficiency causes dieback of the growing point, and the loss of apical dominance results in profuse lateral bud break and multiple, stubby shoot formation. The malformed leaves are often broad, very small, thick and twisted. Internodes are short. Boron deficiency causes profuse flowering, increases the flower size and results in a preponderance of female flowers. Typically these female flowers do not set fruit and they fail to abscise. Fruit set is reduced and there is an increased incidence of parthenocarpic fruit.