PRECISION AGRICULTURE
Vegetation indices
VEGETATION INDICES FOR KNOWING THE TERRAIN
Vegetation indices are an essential tool in precision agriculture, as they allow the conversion of image data into knowledge on the ground.
The indices that can be derived from multispectral images are different and, being all sensitive to changes in chlorophyll content and/or vegetative vigour, they allow detecting possible changes in plant physiology, through the indices it is possible to monitor the health status of crops.
VEGETATION INDICES FOR KNOWING THE TERRAIN
Vegetation indices are an essential tool in precision agriculture, as they allow the conversion of image data into knowledge on the ground.
The indices that can be derived from multispectral images are different and, being all sensitive to changes in chlorophyll content and/or vegetative vigour, they allow detecting possible changes in plant physiology, through the indices it is possible to monitor the health status of crops.
CONTAGEM OF HIGH PRECISION PLANTS
Plant contamination is an essential task in productivity management. It allows farmers to estimate plant population, density, germination rates and plant health and make timely decisions that, ultimately, affect yield. Common methods of manual plant infection have been aided by producers for decades. They are based on visual inspection and calculation of plant mass in small predefined field areas. However, these methods require a lot of work and are long to be precise.
WHY AND WHEN IS AN ACCURATE PLANT COUNT NECESSARY?
There are situations in which a precise ground report is essential, but it is absolutely essential for a precise report that you intend to do:
– Check seed quality, mainly seeds are produced;
– Understand the zones of variable yield in the fields;
– Receive accurate data during P&D projects;
– Estimate performance accurately in the early phases;
– Detect bandits;
– Make timely decisions, for example, partially replant the field;
– Increase performance potential to meet production objectives.
The following table summarises the most important indices:
WHY AND WHEN IS AN ACCURATE PLANT COUNT NECESSARY?
There are situations in which a precise ground report is essential, but it is absolutely essential for a precise report that you intend to do:
– Check seed quality, mainly seeds are produced;
– Understand the zones of variable yield in the fields;
– Receive accurate data during P&D projects;
– Estimate performance accurately in the early phases;
– Detect bandits;
– Make timely decisions, for example, partially replant the field;
– Increase performance potential to meet production objectives.
The following table summarises the most important indices:
.
Characteristics and applications
| vegetation indices | Characteristics and applications | |
NDVI |
Normalized Difference Vegetation Index NDVI Normalised Difference Vegetation Index |
Index describing the normalised difference between the near infrared and visible red bands of vegetation cover. It can be used to estimate the vegetative vigour of plants, which will monitor their health status |
| BNDVI | Blue Normalized Difference Vegetation Index Blue Normalised Difference Vegetation Index |
Band index in red using visible blue, for areas sensitive to chlorophyll content |
| GNDVI | Green Normalized Difference Vegetation Index Green normalised difference vegetation index |
Non-banded red index using visible green, to measure photosynthetics and monitor plant stress. |
| NDRE | Normalized Difference Red Boundary Normalised Difference Red Boundary |
Index sensitive to chlorophyll content in leaves. It is suitable for the study of plants in advanced phenological stages |
| LCI | Leaf Chlorophyll Index Foliar chlorophyll index |
Index allows assessment of chlorophyll content in situations of complete leaf coverage |
| TGI | Triangular Greenness Index Triangular Green Index |
RGB index sensitive to chlorophyll content in situations of high leaf coverage. Can be useful to detect nitrogen needs of plants |
| VARI | Visible Atmospheric Resistant Index Visible Atmospheric Resistance Index |
RGB index sensitive to weather insensitive sail cover |
| MCARI | Modified Chlorophyll Absorption in Reflective Chlorophyll absorption modified reflectance index |
Index measuring chlorophyll concentrations, is sensitive to variations in leaf area index (LAI) |
ENTERPRISE SOLUTIONS
COMBO MATRICE 300/350 RTK + MICASENSE ALTUM PT
1x DJI Matrice 300 RTK ou Matrice 350 RTK
1x Kit Bateria
1x D-RTK
1x Trípode
1x MicaSense Altum-PT
Software Pix4D Fields
COMBO MAVIC 3 MULTISPECTRAL
1x DJI Mavic 3 Multispectral
1x Kit Bateria
1x D-RTK
1x Trípode
Software Pix4D Fields
COMBO MATRICE 300/350 RTK + MICASENSE REDEDGE-P
1x DJI Matrice 300 RTK ou Matrice 350 RTK
1x Kit Bateria
1x D-RTK
1x Trípode
1x MicaSense RedEdge-P
Software Pix4D Fields
