AGRP 1125 Test 3
About this set
Created by:
Zachk21 on April 17, 2012
Subjects:
Fundamentals of Plant Protection
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43 terms
Terms | Definitions |
|---|---|
 The effect of weed competition is greatest when the crop is young. | Why is the timing of weed emergence important in allowing weeds to out-compete crop plants? |
| Allelopathy | The inhibition of the growth of nearby plants through the production of biological toxins is called |
| Pernicious | A weed can be considered "highly injurious or destructive in character; deadly." Another word for this is |
| Photosynthesis | The main function of plant leaves is |
| Life cycle | Annuals, Biennials, and Perennials are weed groups based on |
| Biennial | The type of plant that completes its life cycle in two years is a |
| Plant family | Monocots and Dicots are weed groups based on |
| Correct identification is needed for weed control | Correct weed identification in necessary because |
| Early season control is important | It is important to be able to identify seedling stage weeds because |
| Cultural | Crop rotation, inter-cropping, and narrow-row culture are all examples of this kind of weed control. |
| Non-selective translocated herbicide. | Glyphosate (Roundup) is a good example of a |
| Have a form of over-wintering structure other than seed | Many weeds have vegetative reproductive structures that allow them to |
| Time of application | Pre-plant, pre-emergence, and post-emergence are ways of classifying herbicides by |
| Non-selective herbicide | Paraquat (Gramoxone) is a good example of a |
| Cultural pest control | Crop rotation and cultivation cab both be considered forms of |
| Roots | Absorbing water and nutrients, anchoring the plant and storing food are the main functions of |
| Physical location | The definition of a weed as a "plant out of place" uses this as the sole definition of weediness |
| Competition and Alleopathy | Weeds interfere with crop plants in two basic ways |
| Natural and applied controls | IPM strategy includes the use of two different types of pest controls: |
| Integrated pest management | "The combining of appropriate pest control tactics into a single plan (strategy) to reduce pests and their damage to an acceptable level" is called |
| Integrated pest management | Improved pest control, pesticide management, reduced costs, and reduced hazards are all goals of |
| Pest management | The goal of IPM is |
| True | The use of pesticides can cause outbreaks of secondary pests |
| Exclusion | "Preventing the pest from establishing itself on the site" is a description of the IPM principle of |
| Suppression | "Keeping pests below an economic level" is a description of the IPM principle of |
| Eradication | "Eliminating pests that are undesirable at any level" is a description of the IPM principle of |
| Plant resistance | "Using a plants natural defenses" is a description of the IPM principle of |
| Integrated pest management | Environmental degredation, pest resistance, and rising pest management costs are all valid reasons to consider this |
| Judicious pesticide use will prolong the useful life of a pesticide | Pesticide management of stewardship refers to the fact that |
| Applied | The use of biological alteration of pests is an example of this type of pest control |
| Mechanical progams | Traps, screens, and barriers are examples of this kind of control used in IPM programs |
| Sanitation | Removing pests and their food, and using pest-free seed are examples of this type of control used in IPM programs |
| Natural | The use of climate, geographic barriers or destruction of a pest organisms shelter are examples of this type of pest control |
| Only the resistant or partially resistant ones will survive to reproduce | When a pesticide is applied that kills all or most of the susceptible individuals |
| To any chemical with a similar mode of action | If resistance to a pesticide develops, it is resistant to |
| The mode of action of a pesticide | ... |
| Behavioral Resistance | A situation in which resistant insects may detect or recognize and avoid an insecticide is also called |
| Metabolic Resistance | A situation in which the insect has an enhanced ability to destroy or eliminate the insecticide is also called |
| Delayed Penetration | A mechanism of resistance in which entry of the pesticide is slowed in comparison to the susceptible types is also called |
| Target site modification | A mechanism of resistance in which the location where the pesticide acts is modified to reduce the effect of the pesticide is also called |
| A trait that can be passed from one generation to the next | The term "heritable" refers to |
| Both pesticide-susceptible and pesticide-resistant individuals | Any population of pest organisms is composed of |
| Reducing the number of pesticide applications | Using the IPM "threshold concept" can reduce or slow the development of pesticide resistance by |
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