Children and Society

The “Project BLUE BEAM” lie and “The EVENT”

The soul’s projection and incarnations through spacetime

MISCONCEPTIONS ABOUT THE SYMBOLISM IN THE STORY OF THE “APOCRYPHON” OF JOHN.

TRUE AND COUNTERFEIT SPIRITUALITY

Do animals have souls? What happens when they die?

THE SPIRITUAL COMPASS

About Angels – Which God do they serve?

WHO CHOOSES THE PATH OF TRUTH?

CREMATION OR BURIAL OF THE DEAD?

Self-awareness tips: Spiritual levels

Energy and Spiritual Unification

The Spiritual Path of yesterday and today

Where is our holographic universe projected from?

THE SIGN OF THE CROSS

A SENSE OF DIRECTION FOR WHAT’S COMING

WHO IS THE 7th KING OF THE APOCALYPSE?… HE IS ALREADY HERE!

WHY SHOULD THE AWARENESS OF THE TRUTH BE ACCOMPANIED BY A VIRTUOUS LIFE?

Paul the Apostole: About Judgement

WHY DO THE ANGELS OF REVELATION DESTROY OUR WORLD?

JESUS CHRIST IN TIME

THE CRUCIFIXION OF CHRIST: MYTH OR REALITY?

JESUS CHRIST AND RELIGION

SELF-KNOWLEDGE GUIDELINES

Non-Christian testimonies of the existence of Christ

Ecological pollution or disturbance of the earth’s and the sun’s magnetic field as the cause of climate change?

THE WORLD OF AGATHON LIES OUTSIDE PLATO’S CAVE

WHAT IS THE REASON BEHIND CROP CIRCLES?

5th Dimension and spiritual rapture: two different situations

THE DIFFERENCE BETWEEN THE SIXTH AND THE SEVENTH SENSE

DESIRES OR BIOTIC NEEDS?

THE WORLD CREATION IN PICTURES

TRUTHS AND LIES ABOUT THE IDENTIFICATION OF CHRIST WITH OTHER DEITIES

THE REASONS FOR THE AGGRESSIVE BEHAVIOR OF CHRIST IN HIS INFANCY

WHY DO WE BREAK EGGS AT EASTER?

THE MOST SECURE POST-MORTEM PATH FOR THE SALVATION OF THE SOUL

LOVE: CONDITION OR EMOTION?

THE “EGO” AND THE DIVINE SOURCE

THE CONNECTION TO THE SPIRIT

WHAT ARE THE TRUE SINS OF MAN, FOR WHICH HE MUST REPENT?

KNOWLEDGE OR TRUTH?

666: THE NUMBER OF MAN, THE NUMBER OF THE BEAST

SPIRITUAL PREPARATION

A SPIRITUAL DIET

ARE THEY PREPARING A NEW (HYBRID) KIND OF MAN?

The death of the Gods

HOW CAN WE ESCAPE THE MATRIX?

HOOKED ON THE ILLUSION

MATERIAL MAN IN THE WORLD

WHAT DOES “AGATHON” MEAN?

Home

/SCIENCE

Plants emit sounds when stressed

At first considered more or less inert by science, plants have in fact turned out to be very dynamic entities that can detect and interact with their environment as animals do. After showing that plants can communicate with each other using a universal chemical language, and even travel short distances, researchers have recently discovered that they are also capable of producing sounds in response to different types of stress.

Although it has been revealed in recent years that plants are able to see, hear and smell, they are still considered silent. But, for the first time, they were recorded producing sounds when stressed, which researchers say could open a new field for precision farming, where farmers would listen to crops lacking water or nutrients.

Itzhak Khait and colleagues at Israel’s Tel Aviv University discovered that tomato and tobacco plants emit sounds when they are stressed by lack of water or when their stems are cut off at frequencies that humans can not hear. Microphones placed 10 centimeters from the plants received sounds in the ultrasonic range of 20 to 100 kilohertz, which insects and some mammals would be able to hear and detect within 5 meters.

Researchers even suggest that butterflies may not lay their eggs on a plant that seems stressed by lack of water. Plants could even hear that others lack water, and react accordingly. Previously, devices were installed on plants to record the vibrations caused by the formation and explosion of air bubbles – a process known as cavitation – inside xylem tubes used for transporting ‘water.

Sounds produced in response to different types of stress

But this new study is the first to record plant sounds emitted from a distance. On average, drought-stressed tomato plants emitted 35 sounds per hour, while tobacco plants produced 11. When plant stems were cut, tomato plants averaged 25 sounds per hour. and those of tobacco 15. Unstressed plants produced less than one noise per hour, on average.

a) Experimental protocol used by the researchers. b), c) and d): Amplitudes and number of sounds emitted by tobacco plants and tomatoes lacking water or cut. Credits: I. Khait et al. 2019

It is even possible to distinguish the sounds to know what is the source of the stress. Researchers conducted a deep-learning algorithm to distinguish between plant sounds and wind, rain, and other noise from the greenhouse, correctly identifying in most cases whether the stress was due to drought or at a break, depending on the intensity and frequency of the sound. Tobacco stressed by lack of water seems to produce louder sounds than cut tobacco, for example.

Although Khait and his colleagues are only interested in tomato and tobacco plants, they think that other plants can also make sounds when stressed. In a preliminary study, they also recorded ultrasonic sounds from a cactus ( Mammillaria spinosissima ) and amoxicillam ( Lamium amplexicaule ). Cavitation is a possible explanation of how plants generate sounds.

Better understanding plant stress: towards micro-controlled agriculture?

Enabling farmers to listen to water stressed plants could “open a new path in the field of precision agriculture,” the researchers suggest. They add that such capacity will become increasingly important as climate change exposes more areas to drought.

The authors warn that the results can not yet be extended to other stresses, such as salt or temperature, as they do not lead to sounds. In addition, no experiment was conducted to show whether a butterfly or any other animal could hear and respond to the sounds emitted by the plants. This idea remains hypothetical, for the moment.

If plants emit sounds when stressed, cavitation is the most likely mechanism, says Edward Farmer of the University of Lausanne, Switzerland. But he is skeptical about the results and would like to see more controls, such as the sounds of a soil that dries without plants.

Source
Via