Page 66 - Grapevine NovDec 2021

Around The Vineyard

Background Methods

Canopy sensors are used to differentiate between In this study, researchers used the Taylor et al.
healthy, vigorous plants and unhealthy, stressed (2017) protocol of sensing surveys to review a vari-
plants. The sensors used in canopy sensing have ety of commonly utilized vegetative indices and
improved over the 45+ years since the introduction
of normalized difference vegetation index (NDVI).
NDVI was one of the first vegetative indices (VI),
and uses satellite-based optical sensors. Currently,
vineyards use proximal reflectance sensors (e.g.
CropCircle) to collect spatial information on grape-
vine canopy NDVI. The information gathered can
help vineyard managers identify and address vine-
yard issues. Most previous studies use NDVI, but
there are many new modes available.

When used, sensors are aimed at the actively
growing region of the canopy throughout the sea- A NDVI sensor is used to assess a Concord
son to determine leaf area “quantity” (i.e. are there grape vineyard.
a lot of leaves in the region of interest or not?)
Could researchers identify the most effective VI see if the most effective combination or approach
currently available? to vineyard analysis could be identified. Using this
method, the researchers showed that strong vines
will have a high NDVI signal and weak vines will

GREEN GRAPE HOE

Specialized ToolS For VineyardS

Green Hoe with Hillup Blade
• Basic hoe comes with a Hillup & Takeaway Blade
• In-row cultivation, weed control
• Hydraulic Vine Auger
• 3 Tooth Cultivator
• Under cutter blade
• “NEW” Graft Brush for removing soil from grafts
NEW Brush Rake For Sweeping
Trimmings From Under Trellis
6645 West Main Rd. • Portland, NY 14769
Phone: 716-792-9433 • Fax: 716-792-9434
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