Modern agricultural practices promoted in Manipur include:

The correct answer is: All of the above.

Modern agricultural practices promoted in Manipur include:

• Use of high-yielding varieties: High-yielding varieties (HYVs) are crop plants that have been bred to produce more food than traditional varieties. HYVs are often used in combination with other modern agricultural practices, such as irrigation and fertilizer, to increase crop yields.
• Integrated pest management (IPM): IPM is a system of pest control that uses a combination of biological, cultural, and chemical methods to reduce pest populations to levels that do not cause economic damage. IPM is often used in place of traditional chemical pesticides, which can be harmful to the environment and human health.
• Drip irrigation: Drip irrigation is a method of irrigation that delivers water directly to the roots of plants, using a network of small pipes or tubes. Drip irrigation is more efficient than traditional methods of irrigation, such as flood irrigation, because it reduces water loss due to evaporation and runoff.

These modern agricultural practices have been shown to increase crop yields and reduce the use of harmful pesticides. They are also more sustainable than traditional methods of agriculture, as they help to conserve water and soil resources.