The correct answer is: A. Total precipitation minus the loss due to evaporation.
Effective precipitation is the amount of precipitation that is available for plant growth. It is calculated by subtracting the amount of precipitation that is lost due to evaporation from the total amount of precipitation.
Evaporation is the process by which water changes from a liquid to a gas. It is a natural process that occurs on Earth’s surface. Evaporation is important for the water cycle, as it helps to distribute water around the globe. However, evaporation can also be a problem for plants, as it can remove water from the soil that is needed for plant growth.
Infiltration is the process by which water moves into the soil. It is a physical process that is affected by the soil’s texture, structure, and organic matter content. Infiltration is important for plant growth, as it provides water for plant roots.
The total precipitation during the crop period is the total amount of precipitation that occurs during the time that the crop is growing. This amount of precipitation can be affected by climate change, as climate change can lead to changes in precipitation patterns.
The available water stored in soil within root zone of the crop is the amount of water that is available for plant roots to take up. This amount of water can be affected by soil type, soil depth, and irrigation practices.
Therefore, the
correct answer is A. Total precipitation minus the loss due to evaporation.