Term
| C, H, and O make up what % of all plant needs |
|
Definition
| 95% supplied by air and water |
|
|
Term
| What essential elements are obtained from the soil or soil solution |
|
Definition
| N, P, K, Ca, Mg, S, B, Cu, Cl, Fe, Mn, Mo, Ni, Zn |
|
|
Term
| What 3 elements although Nonessential, are beneficial |
|
Definition
|
|
Term
| Which of the elements are weathered from rock |
|
Definition
|
|
Term
| Composition of Earth's crust: |
|
Definition
| Oxygen 45.2% Required Silicon 27.2% beneficial Aluminum 8.2% Iron 5.8% R micronutrient Calcium 5.1% R (3rd) Magnesium 2.8% R (4th) Potassium 2.3% R (2nd) Sodium 1.7% beneficial |
|
|
Term
| 6 Macronutrients (in order of quantity used by plants) |
|
Definition
N 1
K 2
Ca 3
Mg 4
P 5
S 6 |
|
|
Term
| What are the 3 primary macronutrients often limiting plant growth |
|
Definition
|
|
Term
| What are the 3 secondary macronutrients usually not limiting for plant growth |
|
Definition
|
|
Term
8 micronutrients
(trace elements) |
|
Definition
| B, Cu, Cl, Fe, Mn, Mo, Ni, Zn are used in small amounts. |
|
|
Term
| What element is required for synthesis of chlorophyll |
|
Definition
|
|
Term
| how is Si a beneficial element, what does it do |
|
Definition
| not required by plants but it will strengthen cell walls reducing insect and disease problems |
|
|
Term
| how is Cobalt (Co)a beneficial element, what does it do |
|
Definition
| Not required by most plants but is essential for some plants and animals and may limit their distribution |
|
|
Term
| Is sodium required by plants/ |
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
| Soil Particles______ ions |
|
Definition
| ADSORB- (attatch to) opposite charges |
|
|
Term
|
Definition
| ABSORB (to take/pull within) |
|
|
Term
Sources of nutrients in Soil
(Soil minerals) |
|
Definition
| Major source of all soil-supplied nutrients except N |
|
|
Term
Sources of nutrients in Soil
(Organic matter) |
|
Definition
| Large amounts of N and many anions (phosphate, sulfate) |
|
|
Term
Sources of nutrients in Soil
(Adsorbed nutrients) |
|
Definition
| nutrients held by attraction to clay (cations) and humus (cations and anions) |
|
|
Term
Sources of nutrients in Soil
(Dissolved ions) |
|
Definition
| soil solution- only form absorbed by plants; easily leached too |
|
|
Term
| a small negative charge will ___ a positively charged ion and ____ a negatively charged ion and vice-versa |
|
Definition
|
|
Term
| What is the importance of Cation and Anion Exchange |
|
Definition
Plant nutrients held and not washed away
Keeps pollutants from entering the groundwater or surface water |
|
|
Term
| Clays may adsorb ____-_____% of their mass |
|
Definition
|
|
Term
| Which 4 elements are required for plant growth |
|
Definition
| Oxygen, Potassium, Calcium, Magnesium |
|
|
