The quantity of water required by crops to achieve their evapotranspiration rate for them to grow is known as their water demand. You’ll need to water to varying depths depending on the size and kind of plant. Because it has a vast root zone, a large tree requires more water than a small plant. When you water, make sure the root zone is saturated. Plant growth needs different amounts of water depending on a variety of aspects. The plant itself, depending on its type and stage of growth, are some factors to consider when determining the best time of day to water a garden.
A crop’s water needs so comprised of transpiration and evaporation. The majority of water does not remain in the plant but instead exits as vapor through the plant’s leaves and stem into the atmosphere. This process is known as transpiration. Throughout the day, water vapor evaporates from an open water surface into the atmosphere. Water on the soil surface behaves similarly to water on a plant’s leaves and stem. This process is known as evaporation.
When to Water
- In the Morning – The best time to water your plants is early in the morning. This way, the plants will not lose too much water to evaporation. It will quickly absorb into the soil. Watering early in the morning, before 10 am will ensure that the plants have access to water throughout the day. It will help with the extreme heat.
- In the Evening – If you cannot water in the mornings, then try watering your plant late in the early evening or late afternoon. It is the second-best time to water a vegetable garden. The heat of the day should have passed by the time you water your veggies in the late afternoon. Ensure there is enough light left to dry the plants before nightfall. Watering plants in the late afternoon or early evening reduces evaporation. It also allows the plants to absorb water for several hours without exposure to the sun.
How Much Water?
Because each environment is different and weather fluctuates so often, it’s crucial to have a general concept of your plant’s water requirements. The simplest thing to do is water the plants thoroughly in the morning and allow them to drain for at least 30 minutes. Then weigh the pots, then return 24 hours later to re-weigh them. The amount of water utilized by the plant is reflected in the weight loss. The amount of water used by the plant will change each day. Light, temperature, and relative humidity are the key environmental elements that influence water intake.
The size of the plant is also essential, with larger plants requiring more water than smaller ones. You should be able to make better judgments now that you know how much water the plants consume. Dealing with day-to-day changes in plant water demand to changing weather conditions may necessitate periodic modifications. If you’d rather not have to make these adjustments manually, you may automate your irrigation system to ensure that the plants only get the water they require.
How to Calculate Water Requirements?
Using a soil probe is an excellent method to see how deep you’ve watered. Push the probe into the soil about an hour after watering. It will glide over moist dirt with ease, while dry earth will be difficult to push through. Water your plants and grass until the probe slides to the required depth with ease. Here is a simple guide to calculate water requirements for your plants.
- Evapotranspiration Rate: Evapotranspiration equates to the quantity of water lost from the ground, either through evaporation or plant usage. Warm seasons, wind, and humidity cause evaporation, and your plants lose more water naturally. You have to determine the evapotranspiration rate to decide plant water requirements.
- Rain and Irrigation: Rain is another factor to consider while watering your plants because it provides more water than an irrigation system. A home rain gauge would be handy to discover how much rain fell in your area.
- Calculate Water Needs: You’ve worked out how much water you’re losing to ET, how much you’re replacing in an hour, and how much your plants require. When you combine all of this information, you’ll have a fair notion of how much water you should be watering per week. Because ET rates, soil types, and other parameters differ significantly by area, this computation should only be a guide. Instead of using a single calculation for everything, calculate watering quantities for each zone for the most effective water consumption.
Water Requirements for Different Seasons
Summer season- Water needs for plants are mostly determined by environmental factors. Different crops require different quantities of water under the same weather conditions. Summer is a difficult season to water your plants because most of the water evaporates in the air. Only the soil gets wet, and water does even reach the roots. Ensure that you water early morning in summer so that water reaches the roots properly. The soil will progressively absorb up water if you water gently and for a longer amount of time.
Winter Season- Indoor plants require less water in the winter. The air is drier in the winter, and plants grow at a slower rate in the cold. As a result, they require less water to be healthy and overdoing it might result in root rot.
If you’re watering your plant frequently yet, it’s withering; it’s a sign that you are overwatering the plants. Picking up the garden hose and splashing water is simple. You potentially will cause more harm than good. As a result, it’s best to start by checking the soil’s wetness with your finger. Wait a couple of days if the soil is waterlogged before repeating the soil test. Only until you feel the soil and it’s fully dry should you water your plant.