Plant Nutrients by Function
This nutrient is one of the 3 "structural nutrients" that are used in every part of the plant. This is the only gaseous nutrient.
200 Bonus: Name the other 2 structural nutrients
Carbon from CO2
Bonus: Hydrogen and Oxygen
As the air warms in the grow zone, would that warm air hold more or less water vapor?
Warmer air can hold more water vapor than colder air.
Calcium and Magnesium compete to be absorbed by the plant. Are they in the same group or different groups on the periodic table?
100 Bonus: Name the group(s)
They are both alkaline earth metals, and both fairly reactive with anions.
If the particles in a peat plug have a largely negative charge, and the mineral nutrients have a positive charge do you expect the media to resist or absorb the nutrients?
Opposites attract, the nutrients would be absorbed into the media. But then they can take more work from the plant to remove them from the media.
Name the four management methods
Cultural, Mechanical/Physical, Chemical, and Biological
This mineral nutrient is responsible for the most basic unit of energy within the cell. It is also key for the phospholipid bilayer.
100 Bonus: Is it mobile or immobile?
Phosphorus
Bonus: Mobile
If the energy (W/m2) input into the grow zone is greater than the energy leaving the grow zone, would the temperature increase or decrease.
Temperature would increase as the total energy input exceeds the energy output of a grow zone.
Using a periodic table, what is the largest atomic weight of any of the essential nutrients?
100 Bonus: Is it mobile or immobile?
Molybdenum: atomic weight 95.95
Bonus: Immobile
Describe the difference between cations and anions.
Cations have a positive charge and anions have a negative charge.
Name the three corners of the disease triangle.
2. Vulnerable Host
3. Good environment
What two mineral nutrients are responsible for the integrity of the cell wall.
200 Bonus: Are they mobile or immobile?
100 Bonus: Name the non-mineral structural component of the cell wall.
200 Bonus: Both immobile
100 Bonus: Cellulose
What does VPD stand for? What does it mean?
100 Bonus: What unit is VPD measured in?
Vapor pressure deficit, which is the amount of moisture in the air compared to the amount that air could hold at that temperature when saturated.
100 Bonus: KiloPascals (kPa)
This element is one of the most common in the earth's crust, it is considered a beneficial element but not essential, is utilized in monocots cell walls more than dicots. It is a semi-metal. What is this element?
100 Bonus: What is the essential semi-metal element?
Si Silicon
100 Bonus: Boron
This term refers to the plant's ability to sense and respond to electric fields. It is thought to be due to the influence of the electric fields on calcium ions within the cells. What is this term called?
100 Bonus: Calcium ions are located throughout the plant. What part of the plant do we care the most about calcium ion concentration?
Electrotaxis
Bonus: Apical meristem/grow point/new growth
List 3 cultural control methods that we use.
Growzone stepoints, sanitation, gmp, etc.
This mineral micronutrient is used by the plant to create Heme proteins which are vital in the creation of chlorophyll.
100 Bonus: Is it mobile or immobile?
200 Bonus: Describe the symptoms of a deficiency of this nutrient.
Iron
100 Bonus: Immobile
200 Bonus: Interveinal chlorosis of the new growth often combined with stunting.
Generally, what are two methods for reducing the amount of water vapor in the air?
200 Bonus Points: How would the method that we use in our grow zones effect the air temperature?
1) ventilation (sending humid air outside and bringing dry air from the outside world)
2) Condensation (within the AHU/dehumidifier)
We use the AHU to bring the water vapor out of the air, that process decreases the air temperature.
Potassium is an essential macronutrient, but plants can absorb sodium and lithium if there is not enough potassium present. What group do all of these elements belong to?
Alkali metals
Is calcium an anion or cation in plant nutrients, and therefore is it mobile or immobile in the plant?
Ca+ is a cation and therefore immobile within the plant.
When using dicasan during sanitation, is that chemical control?
Dicasan is part of the 3 step cleaning process, so largely cultural control.
This mineral micronutrient is key for the process of ammonium metabolism in the plant.
100 Bonus: Is it mobile or immobile?
Molybdenum
Bonus: Immobile
What is the process called where energy in the form of heat is transferred through the air. (Cold air chilling a warm leaf or vice versa)
Convection
True or false: While not an essential nutrient, because it makes up a significant portion of the atmosphere, argon is a beneficial nutrient for plants.
100 Bonus: Why?
False
Bonus: Argon is a noble gas and therefore is fairly unreactive, which would make it more difficult for plants to evolve to utilize it despite the abundance.
Cations and anions have different mobility in the media and the plants. Typically, ions with the same charge move past one another easily (mobile nutrients) and immobile nutrients form stronger bonds with each other. What kind of charge would you expect a chloride ion to have?
Chloride ions have a negative charge (Cl-)
Beneficials and nematodes