With reference to the current trends in the cultivation of sugarcane in India, consider the following statements:
1. A substantial saving in seed material is made when 'bud chip settlings' are raised in a nursery and transplanted in the main field.
2. When direct planting of seeds is done, the germination percentage is better with single-budded setts as compared to setts with many buds.
3. If bad weather conditions prevail when seeds are directly planted, single-budded seeds have better survival as compared to large setts.
4. Sugarcane can be cultivated using settlings prepared from tissue culture.
Which of the statements given above is/are correct?