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 setts 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 setts are directly planted, single-budded setts 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?

Using 'bud chip settlings' raised in a nursery and then transplanted to the main field results in significant savings in seed material. These bud chips are less bulky, easier to transport, and more economical. Hence statement 1 is correct.

Research indicates that three-bud setts have a higher germination percentage than setts with more or fewer buds. Single-bud setts have a very low germination percentage due to moisture loss from the cut ends. Planting an entire stalk without cuts also results in low germination, as only the top end germinates. Hence statement 2 is not correct.

When directly planting setts under adverse weather conditions, larger setts demonstrate better survival rates compared to single-budded setts. Hence statement 3 is not correct.

Tissue culture is a modern technique that uses meristem to clone the mother plant, enabling the rapid production and supply of disease-free seed cane for existing commercial varieties. The cane and sugar yield from tissue culture plants is comparable to conventionally propagated plants. Hence statement 4 is correct.

Therefore, statements 1 and 4 are correct.