Which one of the following is cultivated by transplanting seedlings ?

Transplanting seedlings means raising young plants in a nursery and then moving them to the main field. Textbook excerpts show transplanting is the established method for paddy—seedlings are raised in nurseries and then transplanted into waterlogged fields to improve survival and yield [2]. Among the options, maize, sorghum and soybean are predominantly direct‑seeded crops (sown directly into the field). Onion, a vegetable crop, is commonly established by transplanting seedlings or sets in many production systems to ensure uniform stands and earlier maturity. Hence, onion is the crop from the list most typically cultivated by transplanting seedlings.

Sources

1. [1] THEMES IN INDIAN HISTORY PART I, History CLASS XII (NCERT 2025 ed.) > Chapter 2: Kings, Farmers and Towns > The Sudarshana (beautiful) lake in Gujarat > p. 38
2. [2] Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 12: Major Crops and Cropping Patterns in India > Systems of Rice Cultivation > p. 15