Monoammonium phosphate (MAP) can be used in various ways in agriculture. Here are some general guidelines on how to use MAP:

1. Soil Application: Before planting, MAP can be incorporated into the soil to provide an initial supply of phosphorus. The fertilizer can be broadcast or applied in rows based on the specific crop's recommended application rate. Mixing it into the soil can help ensure even distribution.

2. Starter Fertilizer: MAP is often used as a starter fertilizer for young plants. It can be applied during planting by placing the fertilizer near the seed or seedling. This helps provide a readily available source of phosphorus for the developing roots and promotes early growth.

3. Fertigation: MAP is suitable for fertigation, which involves applying fertilizers through irrigation systems. It can be dissolved in water and injected into the irrigation system to deliver a controlled supply of nutrients directly to the plants' roots. The concentration and frequency of application can be adjusted based on crop needs and soil conditions.

4. Foliar Spray: MAP can be dissolved in water and sprayed onto the leaves of plants as a foliar spray. This method is particularly useful when there is a phosphorus deficiency or when plants have difficulty absorbing nutrients from the soil. Foliar application allows for quick nutrient uptake through the leaves.

5. Blending with Other Fertilizers: MAP can be blended with other fertilizers or micronutrients to create custom nutrient blends that cater to specific crop requirements. Mixing it with other fertilizers allows for a balanced nutrient supply and ensures that the specific needs of the plants are met.