Apples

Symptoms of Boron Deficiency

• Fruit becomes corky

"Bitter-pit is associated with boron metabolism of the plant, and it can be effectively reduced by boron sprays. Boron sprays applied during the blossoming period resulted in the following:



a. Significant reduction of the percent of fruits showing deep-pit and the number of deep-pits per fruit at harvest as well as the development of deep-pit in stored fruits.

b. Striking development of good red color and smooth finish.

c. Reduced skin cracking." 1

1- Dunlop, Donald, Thompson, Arthur. "Effect of Boron Sprays on the Development of Bitter-Pit in the York Imperial Apple, Bulletin A-102. Univ. of Maryland Agricultural Experiment Station.