Horticulture
Hort 116 Insects
Credits (5)
| Instructor: Chrissy Scannell | Telephone: 206.276.2045 |
| Office Hours: Tuesday, Thursday NOON - 1PM | Email: cscan@u.washington.edu |
| Office Location: Horticulture Part time office | Time: Tuesday, Thursday 8:20AM – 11:50AM |
| Classroom: Large class room in horticulture |
COURSE DESCRIPTION Insect pests, predators and parasites of
Pacific Northwest ornamentals; life cycles and damages; chemical and biological
controls.
PREREQUISITES Placement into BRDGE 093 or higher and MATH 080 or higher and HORT 110 or instructor's permission
REQUIRED MATERIALS
Text:
- Bobbitt, et al Pacific Northwest Landscape Integrated Pest Management (IPM) Manual, WSU publication MISC0201
- Byther, Landscape Plant Problems, 2-1016-1119-8 WSU,
Required Supplies:
- A hand lens at Least 5X magnification. Recommend 10 times Magnification.
- Sharp tweezers (useful to have a curved point).
- Insect pins.
- Some type of collection box for storing your insects.
OUTCOMES
Upon successful completion of this 5-credit course, the student will be able
to:
A. Identify major types of insect and other invertebrate pests of PNW ornamentals using tactile, botanical, olfactory and other senses. (Critical Thinking College-wide abilities)
B. Identify major types of insect and other invertebrate predators and parasites using tactile, botanical, olfactory and other senses. (Critical Thinking College-wide abilities)
C. Identify the types of damage resulting from insect pests. (Critical Thinking College-wide abilities)
D. Correlate the major plant hosts with the major insect pests. (Critical Thinking College-wide abilities)
E. Identify the control points in the life cycles of the common invertebrate pests of the PNW.
F. Identify and list the general types of insecticices/ miticides by type of action and appropriate pests.
G. Identify, analyze, and select an appropriate method of control for each major type of pest, including beneficial insects and non-chemical approaches. (Critical Thinking College-wide abilities)
ACTIVITIES TO ACHIEVE OUTCOMES
LECTURE MATERIAL
I. INTRODUCTION – ARTHROPOD PESTS & TYPES OF DAMAGE
II. CHEMICAL CONTROL METHODS
A. Terminology
B. Types of chemicals
1. Introduction various classifying methods
2. Classification as to types of action:a. Contact poisons
b. Stomach poisons
c. Fumigants
d. Repellants
e. Attractants
f. Impregnants/Stickers
g. Biorational Pesticides
III. BIOLOGICAL CONTROL
Beneficial Predators/ Parasites of Insects/ Mites
IV. INTEGRATED PEST MANAGEMENT (IPM)
V. ALTERNATIVE APPROACHES
VI. SYNOPSIS
A. A summary by types of damages
B. The most common pests of the most common plants
C. The question of timing
LABORATORY MATERIAL
I. INSECTS AND OTHER ANIMAL PESTS
A. The animal kingdom and arthropods, molluscans, & annelids
B. Insect anatomy external and internal
C. Growth and metamorphosis
D. Control approaches according to morphology
E. Non-insect Orders: Mollusca, Annelida
F. Non insect arthropods (mites, spiders, millipedes, centipedes, symphylids)
G. The order of insects:1. Thysanura, Collembola, Orthoptera
2. Dermaptera, Thysanoptera, Isoptera
3. Hemiptera
4. Homoptera
5. Coleoptera
6. Neuroptera
7. Lepidoptera
8. Diptera
9. Hymenoptera
II. FIELD TRIPS TO VARIOUS INSTITUTIONS WITH PROGRAMS FOR IDENTIFICATION AND
CONTROL OF ARTHROPOD PESTS
GRADING
The student's grade will be based upon the student's completion of assignments and a final examination.
Instructor Withdrawal (V), Incomplete (I), Satisfactory/Unsatisfactory (S/U) grading policies:
- If the student elects the S (Satisfactory) or U (Unsatisfactory) grade, the instructor must be informed at the beginning of the course. In order to receive a Satisfactory grade, the student must earn at least a 70% GPA. Otherwise, a decimal grade will be calculated.
- A \"V\" grade will be granted ONLY if the student has not been active during the last five (5) weeks of the quarter.
- Dropping out weeks 6-10 will assure a \"0.0\" grade; therefore, it is the students responsibility to drop the course.
- An \"I\" grade is usually not granted for this class.
Assessment Criteria. Grading is by a decimal scale and will be based on the average of the following activities:
Paper tests/assignments 45-55 %
Insect specimen and damage tests, 45-55 %
((Insect collection worth 10% of this section)
Attendance/participation/timeliness/neatness of hand-ins will count towards a + or - grade. Late assignments will be penalized a full grade point.
Regular breakdown of percentages will be the basis of the final grades:
| 4.0 = 100 – 98 | 3.9 = 97 – 96 | 3.8 = 95 – 92 | 3.7 = 92 – 90 | 3.6 = 90 - 87 |
| 3.5 = 87 – 85 | 3.4 = 85 – 82 | 3.3 = 82 – 80 | 3.2 = 80 – 77 | 3.1 = 77 – 75 |
| 3.0 = 74 – 72 | 2.9 = 72 – 70 | 2.8 = 69 – 67 | 2.7 = 66 – 65 | 2.6 = 64 – 63 |
| 2.5 = 62 – 61 | 2.4 = 56 – 60 | 2.3 = 57 – 58 | 2.2 = 54 – 56 | 2.1 = 53 – 52 |
* Specimen tests may be saved but only if you inform me ahead of time that you cannot make it. The test must be taken before the next one.
*Get the information on missed assignments as soon as possible; don’t wait until the following week to find out what you’ve missed! Late turn-ins will be accepted with prior arrangement and will be docked as noted above.
EXTRA CREDIT:
Extra credit will generally not be available to individuals.
INSECT COLLECTION GUIDELINES:
Use insect pins, not sewing pins. For soft bodied animals, vials can be used
with a rubbing alcohol solution. Keep all members of the same order together
except where larger specimens can't fit into the insect box (e.g. plant parts).
Use a label to introduce a group such as the Coleoptera (beetles). Individual
specimens need not be labeled but will be admired and appreciated. Please indicate
which are beneficial in your collection.
Pinned specimens should all be facing in one direction, and all should be at the same level on the pin (about one-third of the way down from the end of the pin). No live pinned specimens! Indicate whether you want your collection returned or not. Thanks and good hunting!
An insect collection will help you see where insects are in the environment and in people’s yards. By finding them yourself, analyzing their damages, their stages when you go seek them, your assessment skills will be enhanced. For this reason, only real insects or their damage will count in the collection. Specimen damages and photographs of damage taken by yourself can count.
To help future classes, a portion of your collection should be set aside for the department. There is nowhere to purchase most of the specimens in your collection. By your donating either part or all of your collection, you are helping the next class, just as a previous class aided you in having a wide variety of specimens collected and donated.
A mid-quarter check of all collections may be requested.
TIPS
- Pin the specimens as soon as possible since once they're dry, any attempt to pin them then will result in parts falling off.
- Don't store collected insects in the refrigerator or freezer as they will often mold after thawing!
- The following groups should be represented in a collection:
| Crustacea | Homoptera |
| Chilopoda | Heteroptera |
| Diplopoda | Neuroptera |
| Araneae | Coleoptera |
| Acarina | Diptera |
| Isoptera | Lepidoptera |
| Dermaptera | Hymenoptera 1 |
| Orhoptera | Hymenoptera 2 |
Have you read all of this? Refer back to it when turning in your collection!
RESOURCES
Student Services. If you require an accommodation for a disability, please contact
Services for Students with Disabilities at WDY 114, 425-640-1320, ssdmail@edcc.edu
SCHOLASTIC HONESTY
The Horticulture Department values student honesty and integrity. Consequently,
questionable situations are taken very seriously. Any action will be dealt with
under the "Student Rights and Responsibilities" in the Student Discipline
Policy and will be referred immediately to the Dean of Students.
Course Schedule
| Topics to be covered, exams, field trips and assignments due | Topics may include | |
| Week 1 | ||
| Intro to class and insects, Intro to insect orders | Morphology, anatomy, collecting techniques, types of damage, summary of initial orders | |
| Week 2 | ||
| Non insect arthropods | Summary of orders,sowbugs, millipedes, centipedes | |
| Soil organisms and pests; Take-home exercise #1 handed out |
Summary of orders, mites, collemobola, symphylans | |
| Week 3 | ||
| Take-home exercise due. Pests of roots and crowns, pesticides | Root weevils, bulbflies – gladiolus and onion; craneflies; fungus gnats; wooly apple aphid | |
| Bees and wasps | ||
| Week 4 | ||
| Trunk and branch pests | Bark beetles; Dutch elm disease; bronze birch borers; longhorn borers; termites; ants | |
| Specimen quiz #1 | ||
| Week 5 | ||
| NO CLASSES | ||
| Field trip | ||
| Week 6 | ||
| Trunk and branch pests, common wood boring pests; Beneficials Part 1 | Pitch moths; Balsam wooly adelgid, scales, cherry bark tortrix AND Ladybugs, lacewings, ground beetles, bugs | |
| Field trip | ||
| Week 7 | ||
| Pests of stems and buds; Pests of seeds, cones and fruit | Eriophyid mites, Tarsonomid mites; Psyllids, gall wasps; European Pine shoot borer; Apple maggot; Coddling moth; Bugs; Cooley spruce gall adelgid | |
| Specimen Quiz #2 | ||
| Week 8 | ||
| Foliage pests | Spider mites, eriophyd mites, thrips, lacebugs, and whiteflies, scales, spruce aphid, aphids in general, sawflies | |
| Take-home exercise #2 handed out | ||
| Week 9 | ||
| Take-home exercise #2 due Pests of foliage continued | Caterpillars: leafroller, web makers, Gypsy moth, cypress tip moth; leaf beetles, | |
| Week 10 | ||
| Beneficials part 2 – parasitoids | Wasps, tachinid flies, syrphid flies | |
| Intro to IPM strategies | Collections Due | |
| Week 11 | ||
| Overview | ||
| Final Exam | ||
