Vegetable Monitor

Download
Contact
JP
/
EN
Download
Contact
JP
/
EN

Clip on.
Estimate leaf nitrate-N
in 7 seconds.

Folina

WHAT IS FOLINA?

Folina estimates nitrate-nitrogen（NO₃⁻-N） concentration
in the leaf blade without cutting the leaf.
It makes crop nutrition visible
and
supports on-site fertilization decisions.
Watch the video

HOW FOLINA DIFFERS FROM CONVENTIONAL PLANT SAP TESTING

Conventional plant sap testing requires crushing leaves or petioles and squeezing out plant sap.
Folina estimates leaf nitrate-N simply by clipping onto the leaf.
Conventional plant sap testing
Crush the leaf or petiole and extract sap
・About 10 minutes per sample
・Labor-intensive, which limits sampling frequency
Folina
Clip onto the leaf .
・About 7 seconds per sample
・Lower labor, supporting frequent routine testing

WHAT YOU CAN EXPECT FROM FOLINA

For growers

Smarter fertilization,
steadier crop management
1
Better-timed fertilization
2
Lower overfertilization risk.
3
Less fertilizer waste.

For researchers

Faster validation,
continuous time-series data
1
Less labor than plant sap testing.
2
Non-destructive tracking of the same plant.
3
Faster validation of cultivation methods.

Combine Root-Zone and Plant Data for Better Fertilization Decisions

ROOT-ZONE DATA
EC / irrigation
LEAF NITRATE-N
About 7 sec. / non-destructive
BETTER-INFORMED DECISIONS
Compare / track / adjust
Better plant data supports more efficient fertilizer use.

GETTING STARTED

STEP 01

Inquiry

STEP 02

Demo & field validation

Demo units are available in Japan only.

STEP 03

Setup & operation guidance

STEP 04

Ongoing support

FAQ

Q
Can Folina be used with crops other than tomato?
A
Folina is currently available for tomato.
Applications for other crops are under development and validation.
Q
How can I view the results?
A
Results are displayed on the device screen.
Compatible models can also be used with the Vegemoni cloud system.
Q
How long does a measurement take?
A
A single measurement takes approximately 7 seconds.
The total time varies depending on the selected number of measurements.
Q
Do I need any special skills to use Folina?
A
No. Simply clip the sensor onto the leaf and follow the recommended measurement procedure.
Q
Can I request a demo?
A
Demo units are currently available in Japan only. Please contact us to discuss availability.

SPECIFICATIONS

Model
VM-NO3-H-1（for growers）｜VM-NO3-H-1A（for researchers）
Target crop
Tomato, with other crops planned
Measurement
Estimated leaf-blade nitrate-N
Measurement principle
Optical transmittance
Wavelengths
Multiple UV, visible, and near-infrared wavelengths
Range
NO3⁻: 0–20,000 ppm
NO3⁻-N: 0–4,500 ppm
Data storage
Up to 1,000 records
Connectivity
Bluetooth Low Energy, USB Type-C
Power
Four AA alkaline batteries
Download