-
plant nutrient that moves slowly through the soil?
phosphorous
-
which plant nutrient moves slowly through the plant?
iron
-
which nutrient is a very major part of proteins/enzymes in plants?
N, P, K, or Ca?
nitrogen
-
which nutrient is the center atom of the chlorophyll molecule?
C, Mg, Mn, or N?
magnesium
-
rapidly raise soil pH?
calcium hydroxide (hydrated lime)
-
slowly raise soil pH?
calcium carbonate (limestone)
-
substance used for longterm effect of lowering the soil pH?
sulfur
-
which nutrient is limited in availability when the soil pH is too low?
Mg, Mn, Fe, or Cu?
magnesium
-
which nutrient is limited in availability when the soil pH is too high?
Mg, Mn, Ca, or K?
manganese
-
which symptom is associated with iron deficiency in plants?
C) interveinal chlorosis of the newer leaves
-
which fertilizer nutrient is used for vigorous root growth?
ammonium nitrate
ammonium phosphate
triple super-phosphate
postassium nitrate
triple super-phosphate
-
which nutrient promotes mostly foliage growth?
N, P, K, Ca?
nitrogen
-
which nutrient serves as the "mortar" between the plant cells (skeletal system)?
K, P, N, Ca?
calcium
-
which fertilizer formulation would be most beneficial to your flowering plants?
B) 15-30-20
-
which fertilizer formulation should you apply to your lawn?
D) 30-4-3
-
bloodmeal supplies mostly ______ to the plants.
N, P, K, Ca?
nitrogen
-
bone meal supplies the following nutrients to the plants:
N & P
N & K
Ca & P
Ca & K
calcium and phosphorous
-
three warm season grasses
- bermudagrass
- St Agustinegrass
- zoysiagrass
-
three cool season grasses
- Kentucky bluegrass
- ryegrass
- tall fescue
-
soluable fertilzers usually last about _____ weeks.
slow release may last ____ to ______
-
when planting, keep mulch ____ inches away from the trunk
3 inches
-
damping off caused by these 4 fungi:
- Pythium
- Rhyzoctonia
- Phytophthora
- Botrytis
-
3 keys to acclimatization:
- lower light levels
- less fertilizer
- sub-optimal conditions
-
non acclimatized characteristics:
- thicker leaves
- lighter green
- shorter internodes
- curled leaves
- smaller leaves
-
acclimatized characteristics:
- thinner leaves
- larger leaves
- darker green
- longer internodes
- flat leaves
-
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
-
light compensation point
- a light level where photosynthesis = respiration
- (barely maintaining itself)
-
house plants; 7 environmenal factors:
- light
- temperature
- relative humidity
- water
- growing medium
- insects and diseases
- fertilization
-
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
-
lethal dose (LD-50)
- lethal dose to kill 50% of an animal/pest population
- mg of active ingredient/kg of body weight
-
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)
-
pesticides, modes of action:
-
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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