Term
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Definition
| moves through space as electromagnetic radiation |
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Term
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Definition
| # of cycles that occur in one second frequency of the wave |
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Term
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Definition
-less energy
-both travel at the same speed |
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Term
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Definition
-more energy
- 7 or more waves per second |
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Term
| light is not dangerous- radiation is |
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Definition
| rays travel at the speed of light |
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Term
| plants need energy from the visible portion of the electromagnetic spectrum |
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Definition
| In the visible electromagnetic spectrum, we perceive different wavelengths as different colors |
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Term
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Definition
-Chlorophyll - absorbs energy at certain wavelengths
-other wavelengths reflected ( green and yellow)
-chlorophyll absorbs violet-blue and red
-no plant pigment absorbs green
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Term
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Definition
| ( all plants) plants growing towards light - this is an ability that all plants possess |
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Term
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Definition
When Plants can't find light
-grow tall to get light
-yellowish leaf because the leaves only turn green from sunlight
-long, spindly stem
-yellowish cotyledons |
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Term
| rows run east to west or north to south? |
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Definition
-if the sun was directly overhead it wouldn't matter -but the sun is never directly overhead in Missouri- only on the "tropic of cancer"
-Must run rows east to west -shortest to the east and tallest to the west
-so that the morning and afternoon- the shadows fall between the rows |
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Term
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Definition
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Term
| some plants need short days |
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Definition
| (8 hr light) or will not flower |
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Term
| Other Plants need long days |
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Definition
| (16 hr days) or will not flower |
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Term
| some are day neutral flowers |
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Definition
| in both short and long days |
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Term
| below - ground factors needed for plant growth |
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Definition
-soil properties needed
-soil must hold both water and air
-plats need water and the roots need oxygen
-nutrients needed
-plants need various nutrients found in soil |
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Term
| composition of typical mineral soil |
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Definition
-25% air
-25% water
(air and water line moves)
-5% organic material
45% minerals |
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Term
| Composition of typical mineral soil 2 |
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Definition
-50% of soil volume is compromised of pores
-Ideally - 1/2 of pores are filled with water- and 1/2 with air |
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Term
| Nutrients required by plants : Primary Macro nutrients |
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Definition
1 N - Nitrogen
2 P - Phosphorus
3 K - Potassium |
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Term
| Composition of typical mineral soil 2 |
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Definition
-50% of soil volume is compromised of pores
-Ideally - 1/2 of pores are filled with water- and 1/2 with air |
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Term
| Nutrients required by plants - Primary Macro nutrients |
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Definition
1 N - Nitrogen
2 P - Phosphorus
3 K - Potassium |
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Term
| Nutrients Required by plants - Secondary Macro Nutrients |
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Definition
4 S - Sulfer
5 Ca - Calcium
6 Mg - Magnesium |
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Term
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Definition
1 FE - Iron
2 Mn - Manganese
3 ZN - Zinc
4 Cu - Copper
5 B - Boron
6 Mo - Molybdenum
7 Cl - Chlorine
- THese can produce Deficiency symptoms |
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Term
| All fertilizers have 3 #'s called a fertilizer analysis |
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Definition
-always in the order of N - P - k
- #'s are % by weight from a 100 pound bag |
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Term
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Definition
| most plants need a Soil PH of 6 to 7 |
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Term
| PH 7 is neutral - soils should be slightly acidic |
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Definition
-soil plant of 6-7
-plant nutrients are easily taken up
-nutrients are most available at PH 6 to 7 |
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Term
| PH 7 is neutral - soils should be slightly acidic |
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Definition
-soil plant of 6-7
-plant nutrients are easily taken up
-Nutrients are most available at a ph 0f 6 to 7 |
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Term
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Definition
- can cause nutrient deficiency
- or too abundant -(toxic) |
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Term
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Definition
| -Alkaline soil (too high a PH) prevents plants to take up iron |
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Term
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Definition
1. anchor the cutting
2. Retain Nutrients
3. Gas exchange - put oxygen into soil and get rid of co/2
4 Supply Water
-Cation Exchange Capacity |
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