Horticulture 4/2/15

Thank you in advance for being respectful and on task today. Please go through the

notes in this PowerPoint together and teach each other using the utmost respect.

Please stand and teach the class your specific part of the lesson with passion and

confidence.

DUSTIN

PLANT OF A DAY

MATTHEW & TREVAN

Hardiness

Hardiness

• The USDA classifies plants on their ability to withstand cold weather (hardy) or not. – Plant Hardiness Map: shows average minimum

winter temperatures for given areas

(TREVAN - Pass out map and answer questions on the next slide in your notes)

Hardiness

• How many plant hardiness zones are across the US?

• Which plant hardiness zone is Mishicot in. • Why would this map come in handy to

horticulturalist? (3+ reasons)

KIM

Heat Tolerance

Heat Zones

• The American Horticultural Society classifies plants on their ability to withstand hot weather. – Plant Heat Zone Map: shows rating of a summer

heat calculated based on average days above 86 degrees F

(Answer questions on the next slide in your notes based on map)

Hardiness

• How many plant heat zones are across the US? • Which plant heat zone is Mishicot in. • Why would this map come in handy to

horticulturalist? (3+ reasons)

ALEX

WATER VS LAND AVALIBIABLITY (APPLE)

As Alex Demonstrates.. Answer the Following Questions in your notes:

• _____% of the earth is water• _____% of the earth is land– _____% of the earth is uninhabitable, unarable – _____% of the earth is habitable– _____% of the earth is habitable but unarable– _____% of the earth is habitable arable – _____% of the earth is topsoil

• Why is this demonstration important? (3+ reasons)

Treven R

WATER – SOULTIONS

Define the following in your notes:

• Water is a UNIVERSAL SOLVENT – most things dissolve in it

• SOULTIONS are a – uniform mixture of two or more substances– A SOLVENT is present in the greatest amount– A SOLUTE is present in a lesser amount

• Hypothesize 3+ places in horticulture we will use solutions with H2O?

MEGAN

HUMIDITY

DEFINE EACH IN YOUR NOTES:

• HUMIDITY – amount of water vapor in the air as compared to the amount of water vapor the air can hold at a certain temperature

• CONDENSATION – change in matter of a substance to a denser phase

• DEW – water in the form of droplets appearing in morning or evening due to temperature

• PRECIPITATION – forms of water that fall from the sky

After defining each… 1. Megan leads a discussion in partners then as a class of 3+ examples of where we would see each in horticulture 2. DRAW one example of each in notes next to definition

AUSTIN

Functions of Water

1. Pass out scratch paper and have partners brainstorm 3+ functions of water2. Lead a discussion of hypotheses as a class 3. Record 3+ functions from next slide in your notes.

Water’s Functions – RECORD

• TURGOR (rigidity and shape in plant) • CELL DIVISION (growth) • INTERNAL PRESSURE (growth – ex: root

strength) • PHOTOSYNTHESIS • RESPIRATION • TRANSLOCATION ( & dissolving of minerals)• TEMPERATURE REGULATION

CHRIS & CARTER

EXCESS & LACK OF WATER

1. Pass out scratch paper and have partners brainstorm 3+ plant responses to lack/excess of water2. Lead a discussion of hypotheses as a class 3. Record 3+ functions from next slide in your notes.

NICK - LACKING WATER – RECORD

• Water Stress • Wilting (limp plant tissue)• Leaf Rolling or Color Change • Brittle/Dead Fibrous Roots

CARTER- EXCESS WATER – RECORD

• Reduced Oxygen Levels • Root Hair Death• Reduced Transpiration and Photosynthesis • Rot

JEREMIAH

Irrigation

Play Video and ensure video/sound quality

https://www.youtube.com/watch?v=24LJSJqpYuY

NICK

IRRIGATION - Question & Answer

JORDAN

LIGHTS

Record In Notes: • FLUORESCENT Lights: Higher levels of blue

wavelengths – Can be placed close to plants/seedlings

• INCANDESCENT Lights: Give off red and orange wavelengths – Should not be placed too close to plants as they

burn hot!

DISCUSS: What type of lights do we have in our headhouse?

KYLE J.

Photoperiods of Plants

Record In Notes

• LONG DAY PLANTS – initiate flowering when the nights are shorter – ex: barley, red clover, oats, spinach, winter wheat

• SHORT DAY PLANTS – initiate flowering when the nights are longer– ex: chrysanthemum, poinsettia, soybean

• DAY NEUTRAL PLANTS - do not appear to change due to day length– ex: grapes, peas, tomatoes, corn

KYLE M.

Weeds

Record In Notes….

• Weeds effect on plants…– Compete for water, nutrients, light, space– Reduce quality and yield– Can be poisonous – Host insects and diseases– Increase cost

Record in Notes…

• Broadleaf Weeds - dicot plants–Ex: dandelions, ground ivy, plantain

• Grass Weeds – monocot plants –Ex: crabgrass, quackgrass