My favorite tree. Emmanuel Villegas ENH 101

Transcription

1 My favorite tree Emmanuel Villegas ENH 101

2 Family: Lauraceae (The laurel family) Genus: Persea Specific epithet: americana Common name: Avocado (a.k.a. Butter Pear, Alligator Pear In California two races of avocados are grown: Guatemalan (P.a. guatemalensis) and Mexican (P.a. drymifolia). Relatives: Cinnamon, Camphor, Bay Laurel, Sassafras, Spice Bush

3 Evergreen Drops old leaves after growing new ones Shiny elliptic leaves 4-8 inches long Medium sized up to 60 feet Little greenish flowers Not at all showy

4 Bacon Don Gillogly Fuerte Gwen Hass Holiday Jim Kahaluu Mexicola Murashige Nabal Pinkerton Reed Sharwil Stewart Wertz Whitshell Yamagata Zutano

5 Light: likes full sun Moisture: Must grow in well-drained soil Need frequent watering Allow soil to dry before deep watering Hardiness: Zones 8-11 Mexican variety is most hardy West Indian is least Propagation: Grafting, from seed Graft to seedling or clonal rootstock Suspend seed in water until it germinates

6 Mexico is the largest producer of avocados in the world Producing around 1,040,390 metric tons a year The avocado got its name from the nahuatl word ahuacatl which means testicle Because of the shape of the fruit

7 Two flower types(a and B) Depending on the time of day the flower opens Flowers Open twice: First the female part (pistil) ripens and opens; then the flower closes. About 24 hours later it opens again with the ripe stamens releasing their pollen. 95% of U.S. avocado production is in Southern California 60% in San Diego County

8 Leaves Stunt, yellow, wilt, drop permanently Turn brown, die (often on one side) Bleached, blanched, discolored, stippled Chewed, tied with silk Causes Armillaria root rot; Root and crown rot; Root lesion nematode Verticillium wilt Avocado brown mite; Avocado sixspotted mite; Persea mite; Greenhouse thrips Omnivorous looper, Orange tortrix; Fruittree leafroller; Western avocado leafroller

9 Bark and branches Twigs with elongated lesions, bark splits, necrotic streaks Brownish, gray, orange, reddish, tan, or white encrustations on bark; stunted, declining, or dead branches Fruit Irregular brownish or leathery scarring Causes Bacterial blight and canker California red scale, Dictyospermum scale, Greedy scale, Latania scale Cause Avocado thrips

10 Sticky honeydew and blackish sooty mold on foliage Possible decline and dieback on twigs and branches Copius white waxy material present, leaves may yellow and wither Cottony or waxy material on plant Causes Black scale; Brown soft scale;european fruit lecaneum; Hemispherical scale Giant whitefly; Greenhouse whitefly; Mulberry white fly; Nesting whitefly Redbanded whitefly Mealybugs, Pink hibiscus mealybug, Vine mealybug

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12 [I love the avocado fruit]

13 Is an oily berry Is pear-shaped to round Does not ripen on the tree Can be small or big Has dark green to deep brown skin It can take up to 5-13 years for a tree to bear fruit

14 Avocado can be used in many dishes to add flavor and buttery goodness They can also be eaten raw, just take a spoon and dig in!

15 Avocados can be added to: Sandwiches Salad Sushi Fruit salad Main dishes

16 Avocados can be eaten as guacamole with chips Can be added to bread and eaten as a snack Can be added to chicken wraps

17 Vegans use it as a healthier substitute for meat Avocados Have all the essential amino acids Are water and fiber rich; non-constipating Have no cholesterol It takes 2-4 hours to digest Meat Amino acids denatured by cooking Low water, no fiber; can be constipating High in cholesterol It takes hours to digest

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22 It s supposed to leave hair healthier than it was before

23 [Thanks to the tree for bearing it]