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The flashcards below were created by user
kjel
on FreezingBlue Flashcards.
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plant nutrient that moves slowly through the soil?
phosphorous
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which plant nutrient moves slowly through the plant?
iron
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which nutrient is a very major part of proteins/enzymes in plants?
N, P, K, or Ca?
nitrogen
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which nutrient is the center atom of the chlorophyll molecule?
C, Mg, Mn, or N?
magnesium
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rapidly raise soil pH?
calcium hydroxide (hydrated lime)
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slowly raise soil pH?
calcium carbonate (limestone)
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substance used for longterm effect of lowering the soil pH?
sulfur
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which nutrient is limited in availability when the soil pH is too low?
Mg, Mn, Fe, or Cu?
magnesium
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which nutrient is limited in availability when the soil pH is too high?
Mg, Mn, Ca, or K?
manganese
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which symptom is associated with iron deficiency in plants?
A) yellowing of the lower leaves
B) marginal necrosis of the leaves
C) yellowing of the upper leaves
D) interveinal chlorosis of the newer leaves
D) interveinal chlorosis of the newer leaves (this multiple choice question has been scrambled)
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which fertilizer nutrient is used for vigorous root growth?
ammonium nitrate
ammonium phosphate
triple super-phosphate
postassium nitrate
triple super-phosphate
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which nutrient promotes mostly foliage growth?
N, P, K, Ca?
nitrogen
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which nutrient serves as the "mortar" between the plant cells (skeletal system)?
K, P, N, Ca?
calcium
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which fertilizer formulation would be most beneficial to your flowering plants?
A) 0-30-20
B) 15-30-20
C) 30-2-3
D) 0-0-20
B) 15-30-20 (this multiple choice question has been scrambled)
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which fertilizer formulation should you apply to your lawn?
A) 0-30-20
B) 30-4-20
C) 30-4-3
D) 30-0-0
C) 30-4-3 (this multiple choice question has been scrambled)
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bloodmeal supplies mostly ______ to the plants.
N, P, K, Ca?
nitrogen
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bone meal supplies the following nutrients to the plants:
N & P
N & K
Ca & P
Ca & K
calcium and phosphorous
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three warm season grasses
- bermudagrass
- St Agustinegrass
- zoysiagrass
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three cool season grasses
- Kentucky bluegrass
- ryegrass
- tall fescue
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soluable fertilzers usually last about _____ weeks.
slow release may last ____ to ______
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when planting, keep mulch ____ inches away from the trunk
3 inches
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damping off caused by these 4 fungi:
- Pythium
- Rhyzoctonia
- Phytophthora
- Botrytis
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3 keys to acclimatization:
- lower light levels
- less fertilizer
- sub-optimal conditions
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non acclimatized characteristics:
- thicker leaves
- lighter green
- shorter internodes
- curled leaves
- smaller leaves
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acclimatized characteristics:
- thinner leaves
- larger leaves
- darker green
- longer internodes
- flat leaves
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relative humidity
- the amount of water vapor in the air compared to maximum amount it can hold
- as temp increases, RH decreases... more water vapor held
- as temp decreases, RH increases
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light compensation point
- a light level where photosynthesis = respiration
- (barely maintaining itself)
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house plants; 7 environmenal factors:
- light
- temperature
- relative humidity
- water
- growing medium
- insects and diseases
- fertilization
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potting soil mix:
- Sphaghum peat moss - airspace, holds moisture, breaks down, N fert, acidic
- Perlite - aeration, holds moisture, no nutrition, volcanic ash
- Vermiculite - mica, some nutrition (Ca, K, Mn), some moisture and aeration
2:1:1 or 3:1:1
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lethal dose (LD-50)
- lethal dose to kill 50% of an animal/pest population
- mg of active ingredient/kg of body weight
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pesticide formulations
- emulsifiable concentrates (E or EC)
- solutions (S)
- flowables (F or L)
- aerosols (A)
- wettable powders (WP or W)
- soluable powders (SP)
- baits (B)
- granules (G)
- dusts (D)
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pesticides, modes of action:
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home-garden pesticides:
- Bt - Bacillus thuringiensis (bacteria)
- Pyrethrums - botanical insecticide
- spray oils -
- insecticidal soap - some dissolve the outer waxy coating of insect cuticle
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