Question

Brown heart disease is caused due to the deficiency of
a. Boron
b. Iron
c. Molybdenum
d. Phosphorous

Answer 1

Hint: This element is a micronutrient that is required in very minor quantities by most of the vegetable crops and other vegetation, however, affects the plant’s growth greatly if it is lacked. The deficiency of one particular micronutrient results in the structural weakness of the plant and can lead to broken trunk and branches.

Complete answer:
Due to the involvement of the element boron in the growth of the plant’s cell, indications of deficiency of boron are articulated at developing tips of the root or shoot.

Generally, this also includes impeding and alteration of the progressing tips that can lead to the demise of these tips, stiff verdure, and staining of lower leaf tips.

Flowering and fruiting are condensed and developing fruits may often be distorted due to the deficiency of boron in plants. In brassicas, shortage of boron can be the source of root crops, particularly in rutabaga, in order to progress soft brown centers, a disorder called “brown heart”.

The Broccoli and cauliflower can progress echoing trunks with the discolored matter. Hollow stems are frequently accredited to boron deficit. Thus, option A is the correct answer.

Additional Information:
- On the other hand, not all the cases of the hollow stem are triggered by boron deficiency, the complaint can be instigated by quick development due to widespread plant layout, unwarranted element nitrogen or potassium requests, and high soil humidity.
- The deficiency of iron can cause anemia.
- The deficiency of molybdenum can cause severe brain damage, which results in early death.
- The deficiency of phosphorus can cause bone diseases like rickets in children and osteomalacia in adults.

Note: The element Boron controls the path of pentose phosphate, upsurges the translocation of sugar in plants. Due to a shortage of boron, the progression of roots breaks, and the ailment ' brown heart' is produced in sugar beet.
The further lack of boron may affect the vegetative and propagative development of plants, which may result in the embarrassment of cell extension, death of meristem, and condensed fertility.