Which one of the following is cultivated by transplanting seedlings?

Correct Option

Onion cultivation commonly involves the method of transplanting seedlings. Initially, onion seeds are sown in a nursery bed to raise young seedlings. Once these seedlings reach an appropriate stage of growth, they are carefully transplanted into the main field. This practice offers several advantages, including better management of initial growth conditions, promotion of uniform plant stand and maturity, and efficient utilization of resources and pest control during the early stages.

Incorrect Options

Maize (a), Sorghum (b), and Soyabean (d) are typically cultivated by direct sowing of seeds into the main field, rather than by transplanting seedlings. Maize is generally direct-sown. Sorghum is commonly propagated through direct seeding, either by broadcasting or in lines. Soyabean is also primarily planted by direct seeding, often utilizing methods like seed drilling.