Question

The brown color of leaves of cabbage is due to the deficiency of
A.Boran
B.Calcium
C.Nitrogen
D.Sulphur

Answer 1

Acidic, sandy, or coarse soils often contain less calcium. Uneven soil moisture and overuse of fertilizers can also cause calcium deficiency. At times, even with sufficient calcium in the soil, it can be in an insoluble form and is then unusable by the plant or it could be attributed to a “transport protein”.

Complete answer:
Soils containing high phosphorus are particularly susceptible to creating insoluble forms of calcium.Calcium deficiency symptoms appear initially as localized tissue necrosis leading to stunted plant growth, necrotic leaf margins on young leaves or curling of the leaves, and eventual death of terminal buds and root tips.
The mature leaves are rarely if ever affected because calcium accumulates to high concentrations in older leaves.Calcium deficiencies in plants are associated with reduced height, fewer nodes, and less leaf area. There is some evidence that plants like lettuce are more likely to experience tipburn (burned edges of leaves) if they’re experiencing a deficiency of calcium.Several common and damaging diseases will cause cabbage plants to wilt. Fusarium and yellow wilt infections will result in the lower leaves turning yellow and brown. Water the plants heavily and regularly to keep the soil consistently moist.
Pour the water at the base of the plants and add a layer of mulch around the base of each plant to help limit evaporation and keep the soil cool. Cabbage plants have been transplanted into a prepared garden bed, continue applying cabbage fertilizer every 3 to 4 weeks until heads begin to form. As mentioned before, cabbage plants are heavy feeders and will do well with a couple of doses of fertilizer throughout the growing season.
We can add fertilizer to the soil just before transplanting cabbage seedlings.

Hence, option B is correct.

Note:
A healthy cabbage plant has a higher chance of surviving problems with little to no damage than cabbage plants that are not healthy. You can achieve healthy plants by providing the proper amount of water and sunlight as well as feeding the cabbage with an all-natural fertilizer.