Knowing the condition of your crop irrigation is crucial to avoid degradation in crop health. Through remote sensing knowing the water content and moisture content is possible. The data can indicate the area which has low, high or medium water content, moisture content and evapotranspiration rate.

Different parameters provided by Farmonaut
Due to the above mentioned importance of irritation data, farmers should be aware of it for better production. Hence, Farmonaut has provided this data to farmers to know the condition of their crops and take necessary irrigation practices to avoid the drying of crops. Farmonaut provides the irrigation parameter data on the web app as well as mobile app.

The different irrigation parameters provided by Farmonaut are as follows:

NDWI (Normalized Difference Water Index)

NDWI is an index which states the plant water content that can help us control irrigation, significantly improving agriculture, especially in areas where meeting the need for water is difficult. The high NDWI values correspond to high plant water content and coating of high plant fraction, whereas the low NDWI values correspond to low vegetation content and cover with low vegetation. NDWI rate will decrease during periods of water stress.

NDMI (Normalized Difference Moisture Index)

NDMI states the moisture content in the soil which helps in monitoring the drought condition of the areas. The kind of vegetation must be taken into account to further know the amount of water to use at particular growth stages of crops.

Evapotranspiration

Evapotranspiration is the loss of water from the soil surface as well as from the plants. It measures the rate at which evaporation and transpiration occurs at multiple locations on the farm. Through evapotranspiration one can easily schedule the irrigation based on the indicators received by the data. Nevertheless, it can be ignored if NDWI and NDMI data result in a good condition.

How to access data?

Step 1: Login to your account on the Farmonaut application.

Step 2: Select the field You want to get data for.

Step 3: In the Mobile application, Go to the settings -→ In the controls tab select the NDWI / NDMI / Evapotranspiration -→ Click Show on Field

In Web application, click on NDWI / NDMI / Evapotranspiration button provided on the left side. The satellite images will be shown on map.

Step 4: Interpret the data by the analysis scale provided and take action as per the following outcomes.

Interpretation of data using all parameters:

Parameters Condition Action to be taken
NDWI

NDMI

Evapotranspiration

High

High

Low

No irrigation would be required.

The corp condition would be good until the next satellite visit.

NDWI

NDMI

Evapotranspiration

High

High

High

Requires frequent irrigation

Due to high evapotranspiration rate, the water reduces over time hence requires irrigation frequently

NDWI

NDMI

Evapotranspiration

Low

Low

Low / High

Irrigation is highly needed

Water content in plants and soil is reduced hence irrigation must be done irrespective of Evapotranspiration.

NDWI

NDMI

Evapotranspiration

Low

High

High / Low

Examine the issue on the field.

It indicates that plants aren’t receiving water hence the water uptake in plants is low.

NDWI

NDMI

Evapotranspiration

High

Low

High / Low

Water content in soil must be maintained

Not enough water content in soil can result in drying of plants or can cause some other issues until the next satellite visit.

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