Term
| Mechanical Control (term) |
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Definition
| The use of a physical activity or barrier to remove or inhibit the growth of weeds |
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Term
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Definition
Mech. Control
-Disadvantages
-Weeds must be erect and upright
-Can spread seeds |
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Term
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Definition
Mech. Control
-Advantages
-Very selective
-Minimal impact on environment
-Disadvantages
-Time and labor intensive
-crop can be trampled |
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Term
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Definition
Mech. Control
-Can be both inexpensive or expensive
-Advantages
-deprives weeds of sunlight and moisture
-Disadvantage
-doesnt control all weeds |
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Term
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Definition
Mech. Control
-Advantages
-Controls weeds by uprooting or burying or both
-Disadvantages
-Costly |
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Term
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Definition
| Any pesticide that is used to kill or interupt the growth of unwanted plants |
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Term
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Definition
-Reduce need for human labor
-Controls weeds when other measures cant
-Can be used when tillage is not possible or desired
-Often effective after one application |
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Term
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Definition
-Applicator mus have liscense
-Pose health risks to environment and humans
-Volitile herbicides could injury off target plants
-Crop injury
-Soil persistance
-Herbicide resistance |
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Term
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Definition
Sequence of events from first contact with plant to the death of plant |
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Term
| Ideal herbicide properties |
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Definition
-Applied in small amount
-Applied in different ways
-Doesnt cause cancer
-Easy to apply
-High selectivity
-Low mammal toxicity
-Low soil solubility
-Low volatility
-Rapid biodegradeable |
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Term
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Definition
Bio. Control
-Introduced natural enemy against introduced pest
-Ecological approach |
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Term
| Augmentative or Inundative |
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Definition
Bio. Control
-Introduced or native natural enemy against introduced or native pest
-Technologial approach |
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Term
| Conservation of Natural Enemies |
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Definition
Bio. Control
-Enhancing or protecting naturally ocurring enemies
-an ecological approach |
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Term
| Biological control disadvantages |
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Definition
-Lag period
-No guarantee of results
-Unknown ecological effects
-Potential BC agents may be low |
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Term
| Biological Control (term) |
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Definition
| Use of naturally occuring organisms to maintain a target weeds population at a lower density than would naturally occur |
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Term
| Broad spectrum or grazing management |
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Definition
Bio. Control
-Polyhagous natural enemies confined to ensure restricted action
-technological approach |
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Term
| Biological control advantages |
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Definition
-Control is limited to target weed and a few close relatives
-Few harmful side effects
-High benefit to cost ration for successful programs |
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