Consider the following statements regarding the Integrated Plant Nutrient and Pest Management program which forms a holistic part of sustainable agriculture:

1. The program primarily focuses on the zero usage of inorganic fertilisers.

2. It adopts improved rainwater management practices to increase the effectiveness of the seasonal rainfall.

3. It aims to maintain soil organic matter levels at levels of at least 50-75% of those under natural vegetation.

Which of the above statements is/are correct?