Question: What is the cause of cavity spot formation in carrots? (RJ Supervisor 2012)
Options:
Low absorption of nitrogen and high absorption of calcium
High absorption of phosphorus and low absorption of calcium
High absorption of sulfur and calcium
High absorption of potassium and low absorption of calcium
-Cavity spot is a physiological disorder in carrots characterized by small, sunken lesions on the roots.
-It is primarily caused by an imbalance in calcium uptake and distribution within the carrot plant.
-High levels of potassium in the soil can interfere with calcium absorption, leading to calcium deficiency in the developing roots and the formation of cavity spots.
🔴Additional information::
-Cavity spot in carrots is caused by a calcium deficiency that leads to a localized infection by the Pythium fungus.
-The fungi that cause cavity spot, Pythium sulcatum and P. violae, grow best in cool temperatures and moist soil.
-Symptoms of cavity spot become visible on carrots after 12 weeks, when they are mature and ready to be sold.