What is the ideal water-to-air ratio in the pores of soil?

The ideal water-to-air ratio in the pores of soil is typically around 50% air and 50% water. This balance is essential for healthy plant growth, as it allows for adequate oxygen to be available for root respiration while also providing sufficient moisture for nutrient uptake.

In well-aerated soils, the air in the pores supports the microbial activity necessary for soil health and ensures that plant roots receive the oxygen they need. Conversely, too much water can lead to waterlogged conditions, causing roots to suffocate due to lack of oxygen, while too much air can dry out the soil and hinder moisture availability for the plants. Achieving a 50-50 ratio helps create a favorable environment that optimally supports plant growth and development.