Plant Nutrient Uptake
The plant part responsible for the fastest rate of nutrient solution uptake is?
What are the root tips and lateral branches?
This macronutrient is one of the major building blocks of plant dry matter.
What is carbon?
This fertilizer is the main source of calcium.
This nutrient is required in abundance by plants and if limited will dramatically decrease yields and lead to uniform yellow mature leaves.
What is nitrogen?
That ideal pH range for hydroponic nutrient solutions is.
What is 5.5-6.0?
Passive transport is a process where nutrient solution _____ into the root tissue and into the ____.
What is diffuses into root tissue and into the apoplast (or intercellular space or apparent free space)
This immobile secondary macronutrient travels via the apoplastic pathway and is responsible for strengthening cell walls.
What is calcium?
This fertilizer source is the primary source of nitrogen.
What is calcium nitrate or potassium nitrate?
When this nutrient is deficient, plants may experience interveinal chlorosis on newest leaves while older leaves appear normal. Chlorosis may turn white at more advanced stages.
What is Fe?
These nutrients may become toxic when pH becomes too low.
What are Fe, Mn, B, Cu, Zn?
Active transport moves solutes out of intercellular space via ____ and _____ across plasma membranes and into cellular tissue.
What are pumps and carriers.
This primary macronutrient may remain a free ion within plant cells. This decreases their osmotic potential, and subsequently increases their turgidity.
What is K?
Epsom salts is another name for this magnesium source.
What is magnesium sulfate?
When this nutrient is limiting, roots may appear stubby, flowers undeveloped, and leaves distorted.
What is boron?
This nutrient does not appear to have any toxicity at very high tissue levels.
What is sulfur?
During flowering and fruit-set, uptake rates of this cation is typically greater than nitrate.
What is potassium (and to lesser extent calcium)
This micronutrient assists with respiration.
What is Fe?
1kg of 10-10-10 fertilizer would supply Xkg of P?
What is 0.0436kg P? (or 43 mg P)
solution: 1 kg x (0.1 P2O5) x (0.436 P/P2O5)
When this nutrient is deficient plants may exhibit brown roots and necrosis on growing points.
What is calcium?
Excessive amounts of one nutrient may cause _____ of another.
What is deficiency?
Rhizosphere pH may increase during vegetative growth due to the uptake of this mineral nutrient.
What is nitrate?
This primary macronutrient has the highest concentration in plant material.
What is N?
These forms of iron (and other micronutrients) can be degraded by UV, Ozone, or other oxidizers.
What are chelated forms?
When this nutrient is deficient plants may exhibit marginal chlorosis on older leaves (leaf scorch) that leads to interveinal chlorosis, greenback on tomatoes, and lower quality fruits.
What is potassium?
Common toxicity symptoms are: