The team from Dubbo/Warren/Coonamble spent late September optimising planters across the Macquarie Valley. There was much interest in the program lead by Parts Plus Consultant Pete Fairall. With the season being tighter than normal when it comes to water allocation, it is most important that growers make every hectare count this year and the planter checks enabled the confidence once planting began that the machines were working at their optimum level. We will look to start the program earlier due to demand this season.
NDVI and Your Farm
Understanding your crops’ health status isn’t the easiest thing to do, but what if there was an easy, fast and efficient way to monitor its health and progress over time? That’s where Normalized Difference Vegetation Index (NDVI) data comes in.
NDVI is a measurement of plant health based on how a plant reflects light (usually sunlight) at specific frequencies. NDVI measures the reflectivity of plants expressed as the ratio of near-infrared reflectivity (NIR) minus red reflectivity (VIS) over NIR plus VIS.
The equation for NDVI was developed several decades ago to make use of satellite imagery in agriculture.
NDVI works because when sunlight reaches a plant, certain wavelengths are absorbed while others are reflected. Chlorophyll strongly absorbs visible light while the cell structure of leaves strongly reflects near-infrared light. A spongy layer along the bottom of a plant causes these reflections. When a plant becomes dehydrated, sick, affected by disease, etc. this spongy layer deteriorates and the plant absorbs more of that near-infrared light rather than reflecting it. Conversely, when near-infrared light hits a leaf on a healthy plant, it is reflected back. So, looking at how NIR varies compared to red light provides an accurate indication of chlorophyll, which correlates to plant health.
NDVI imagery can be collected using drones, satellites, or in crop sensors. These different methods are capable of producing NDVI maps.
Field Analyser Beta
Regular users of their MyJohnDeere accounts will have noticed some new functionality. New features are available in Team Manager, Land Manager, Setup Builder, Field Analyzer, and Files.
Field analyzer beta provides users with new data and analysis tools that allow growers to better analyze their field information.
Detailed list of features available for Field Analyzer Beta:
1. View higher resolution operational maps
2. Analyze a custom area within a field
3. Customize operational map legends
4. Create legend templates to apply to other fields
5. Overlay two maps and adjust the opacity
6. Compare two variables to understand how they correlate
7. View new map layers
We encourage you to log into your MyJohnDeere account and have a play around with these new features. Please feel free contact us if you have any questions to do with using or navigating around these new tools.