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January 5 2021
in Environment

Raman, portable device for detecting plant stress

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Raman, portable device for detecting plant stress
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tags: plantssensors

A sensor allows you to literally listen to the vegetables. Not only does it assess plant stress, but also heat suffering and nutritional needs.

Gianluca Ricciodi Gianluca Riccio
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Researchers from the Singapore-MIT Alliance for Research and Technology (SMART) and Temasek Life Sciences Laboratory (TLL) have designed a portable optical sensor capable of monitoring plant stress.

The device offers farmers, botanists and agronomists a new tool for early diagnosis and real-time monitoring of plant health and stress in field conditions.

Anyone who follows this blog knows: precision farming is an important strategy for addressing the food crisis. New technological and sustainable agricultural practices aim for healthier and more widespread foods. Diagnosing plant stress can help treat them before visible symptoms of decay and subsequent yield loss begin.

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Raman, anti-stress sensor for plants

SMART's new portable Raman sensor is a useful tool in precision agriculture that allows for early detection of nitrogen deficiency in plants. A factor that can be linked to premature leaf deterioration and loss of yield.

In a paper called "Portable Raman leaf-clip sensor for quick detection of plant stress”Published in the journal Scientific Reports, the scientists explain how they designed, built and tested the device that allows the optical sensor to probe the chemistry of the leaf and establish the stress state of the plants.

Laboratory analysis directly in the field

"Our results showed that the in vivo measurements with the handheld Raman sensor were consistent with measurements obtained with a benchtop spectrometer under laboratory conditions," says the Prof. Rajeev, professor of electrical and computer engineering at MIT Ram, co-lead author of the paper and principal investigator at DiSTAP.

“We have shown that early detection of nitrogen deficiency (a critical nutrient and the most important component of fertilizers) in living plants is possible with the handheld sensor,” says the researcher.

While the study primarily looked at measuring nitrogen levels in plants, the device can also be used to detect the levels of other plant stress phenotypes. Drought, heat and cold stress, salt stress and light stress. The wide range of plant stressors that can be detected by the Raman sensor makes it ideal for field use.

A diagram of the Raman sensor operation

A "dashboard" for plant stress and more.

The team believes the discovery could help farmers maximize crop yields. Raman can ensure minimal negative impacts on the environment, including minimizing pollution of aquatic ecosystems. A goal that is achieved by reducing nitrogen outflow and infiltration into the water table.

The sensor for measuring plant stress has been demonstrated on multiple varieties of vegetables. It will support the effort to produce low-cost, nutritious vegetables.

This device literally allows you to "talk to plants". Reformulation: allows you to LISTEN to the plants, and to know exactly when they are well, when they are ill. And when they are "hungry and thirsty", and what exactly they need.

It will lead not only to an excellent rationalization of resources, but also to a more natural selection of vegetables with special and specific characteristics of density, resistance, nutritional value.

Extending this work to a wider variety of crops can contribute to better crop yields globally. More: greater climate resilience and mitigation of environmental pollution with a reduced use of fertilizers.

Precision farming means this.

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The author

Gianluca Riccio, copywriter and journalist - Born in 1975, he is the creative director of an advertising agency, he is affiliated with the Italian Institute for the Future, World Future Society and H +, Network of Italian Transhumanists.

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