Which of the following statements is NOT true with regard to system of rice intensification (SR

• I ? i. It follows the principle of careful planting of single seedlings rather than in clumps. ii. It follows alternate wetting and dry method rather than continuous flooding in the field. iii. Young seedlings between 20-25 days old are transplanted. iv. It follows wider spacing at 25 cm × 25 cm in square planting rather than in rows.