IrriWatch | Advisor
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Map View
This tab displays the data as a Map View. Users can control the data displayed using: Point-and-Click selection (with the mouse in the map), with the Field Selection Panel (on the left side), and with the Layer Drop-Down Menu (in the upper left corner of the map).
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In the upper left corner, there is a drop-down menu where users can select which Map Layer to display, between: Soil Moisture status, Date Next Irrigation, Soil Moisture, Crop Growth, Total Crop Growth, NDVI, Actual ET, Leaf N, Soil Water Potential, Soil Temperature Daily, or ‘Deselect all layers’ for seeing the background image. Users can also select the background map (Satellite and/or Streets), to display behind the fields to adjust for user’s visual preference or spatial orientation needs.
Users can Split the display into 2 side-by-side maps (each with unique data) using the Split button in the upper right corner. Users can alter each maps’ Date (to compare over time) or Layer (to compare different insights, such as Crop Growth-vs-Total Crop Growth).
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Users can zoom in (to narrow search down) to a field of interest by either: clicking on the field, clicking the navigation icon , using the mouse/ keyboard scroll, dragging or clicking on the zoom in/ out slider in the top left corner, or changing field selection(s) in the left-side Field Selection Panel. Users can zoom out (to reset or show the whole farm) by clicking the Company’s name, using the mouse /keyboard scroll, or dragging or clicking on the zoom in/ out slider in the top left corner.
When hovering with the mouse over the fields, a box will appear displaying the information associated with them.
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Map Layers
Moisture Status
Upon opening, the Moisture status layer is activated by default, giving users a quick overview of the field conditions: the moisture status of crops and their ability to uptake water and nutrients.
It provides information on whether actual soil moisture is in an acceptable range, so not too dry and not too wet. The moisture status is based on the soil moisture map, but gives a rapid overview on fields and part of fields being in an unfavourable condition.
If users irrigate on time and keep the soil moisture in the root zone between field capacity and the irrigation criteria, the field remains green (indicating adequate moisture). Green suggests that soil moisture status is adequate for crop production. The crop water requirements are satisfied from the soil profile.
The colour turns orange as early warning to prevent water stress, which occurs when soil moisture falls between the irrigation criteria and critical soil moisture. Orange suggests that soil moisture is stressed and that crop production might be impacted, but it is not very prominent.
After irrigation is delayed, the pixels turn red; in this case, soil moisture is equal to or less than the critical soil moisture. Red suggests that soil moisture is dry and that crop production is adversely impacted because photosynthesis is hampered by water shortage.
If irrigation exceeds crop water requirements and over-irrigation occurs above field capacity, the field turns blue. Blue suggests that soil moisture is over-wetted due to excess irrigation or due to heavy rainfall. If the field remains blue for a duration of one week or longer, there might be a
drainage related problem.
This irrigation traffic light is only activated if the vegetation cover exceeds 20%; otherwise, the pixels indicate sparse vegetation. Yellow suggests that the crop has sparse vegetation being insufficient to properly measure root zone moisture conditions.
The Moisture status layer is not based on forecasted data, so it doesn't align with the first day of the irrigation planner. Instead, it is based on the most recent data derived from the latest satellite images.
The Moisture status layer is not based on forecasted data, so it doesn't align with the first day of the irrigation planner. Instead, it is based on the most recent data derived from the latest satellite images.
Example: If your field is mainly green with some orange spots, you are getting a signal that parts of the field are drying up faster than other parts.
Date Next Irrigation
The Date Next Irrigation layer gives users a quick overview of recommended irrigation dates for the fields on a farm. The suggested irrigation amount can be viewed in the Data & Insights tab within the panel for the next advised irrigation, offering users a rapid overview of areas in need of irrigation. This feature helps managers plan their weekly irrigation schedules and make daily adjustments as needed. For mobile systems, this information can be used which fields should get the sprinklers next.
Determination of this date is depending on the current soil moisture content, forecasted weather and water demand, type of irrigation and the minimum period between consecutive irrigations being defined by a rotation schedule.
Some fields may not trigger a moisture alert but still need irrigation on the same day. This occurs because, if the weather forecast is accurate, soil moisture is expected to drop below the critical level (irrigation criteria) within the irrigation interval, unless irrigation is applied. Conversely, when a moisture alert is triggered, irrigation is always scheduled, as the soil moisture has already fallen below the critical level.
Some fields may not trigger a moisture alert but still need irrigation on the same day. This occurs because, if the weather forecast is accurate, soil moisture is expected to drop below the critical level (irrigation criteria) within the irrigation interval, unless irrigation is applied. Conversely, when a moisture alert is triggered, irrigation is always scheduled, as the soil moisture has already fallen below the critical level.
The irrigation advice per field (Date Next Irrigation) is shown when the irrigation default % is met, or in other words, when at least a certain number of pixels in the field meet the irrigation criteria.
Example: If the soil reservoir is depleting every day 8 mm, and there is still 24 mm available before crop water stress is triggered, then irrigation should be supplied within 3 days. Hence, the date
shows the date of today + 3 days.
Soil Temperature
Soil Moisture is the map of rootzone soil moisture (defined before in the Irrigation Pillar) at 10m by 10 m pixel size. It shows the distribution of moisture across the field, highlighting uniformity or non-uniformity in moisture distribution.
Example: if a spot within the field is suddenly having high moisture compared to neighbouring pixels, it may indicate a leak (especially if we see a pattern that can be local, linear in case of dripo lines or circular in case of pivot); a low spot may indicate a clogged nozzle.
Soil Moisture
Soil Moisture is the map of rootzone soil moisture (defined before in the Irrigation Pillar) at 10m by 10 m pixel size. It shows the distribution of moisture across the field, highlighting uniformity or non-uniformity in moisture distribution.
Example: if a spot within the field is suddenly having high moisture compared to neighbouring pixels, it may indicate a leak (especially if we see a pattern that can be local, linear in case of dripo lines or circular in case of pivot); a low spot may indicate a clogged nozzle.
Crop Growth/ Dry Matter Production
Crop Growth or Dry matter production is incremental dry matter production on a given day in terms of stem, leaves, grains, roots and tubers growth. The production during certain crop stages can be fundamental for determining certain agronomic processes and quality of the harvestable product. The accumulated value of dry matter production across the growing season is a good indicator for final crop yield (but requires conversion into harvestable portions from IW clients) and economic returns.
It is used to monitor level of crop production and crop health throughout the cropping season.
Understanding crop response to irrigation and other input factors.
Example: The crop production is 183 kg/ha/d but the water unlimited crop production is 201 kg/ha/d. This implies a production gap of 18 kg/ha/d or 10%. If this is on purpose, then the impact of deficit irrigation can be evaluated positively. If this happened coincidently, signals will be given that crops suffer from a water shortage that will affect economic return.
Total Crop Growth
Total Crop Growth is the accumulation of crop growth or dry matter production from date of planting.
Normalized Difference Vegetation Index (NDVI)
NDVI or Normalized Difference Vegetation Index (NIR - R) / (NIR + R). It is an indicator that gives an idea about the vegetation density and health within the field. At pixel level it shows variability or uniformity of vegetation.
Actual ET
Actual ET is the actual evapotranspiration (ETa) map.
Leaf Nitrogen
Leaf Nitrogen is the map of nitrogen percentage in the leaves.
Soil Water Potential
Soil Water Potential is the soil water potential in the rootzone.
Please note:
The red colour in the map layers does not always represent the worst field conditions, it is a relative scale.
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