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-Welcome to
Penryn Orchard Specialties
  

Sustainability


 
 
 

There is a lot of talk about sustainability these days.
So what does it mean, practically, for a small farm?


By definition, to be sustainable is to be able to last, to keep farming. In order to do so, an awareness of the environmental, social, and economic consequences of our actions is required.


Environmental sustainability:
nourish the soil so it can feed the trees and plants. Don't contaminate the aquifers.
Use water wisely and sparingly. Work with nature rather than against it,
by enlisting the help of beneficial insects and animals, and companion plants whenever possible.
Learn everything you can about what you grow and how to care for it.
Use sprays only when absolutely needed to protect the crop, even when they are organic.
Take only what you need, and use all you take.

Social sustainability: nurture relationships with neighbors, community, suppliers, and customers.
Don't treat people like tissues. Support locally owned businesses, share your knowledge, be an educator.
Reliably and consistently deliver the best product and service possible, and stand by it.

Economic sustainability: Develop a diversity of markets and products. Always give the customers value
for their purchase, while earning enough to keep the farm financially viable.

Honeybees are crucial to the pollination
of most food crops. Without bees,
flowers do not turn into fruits.
honeybees

Bees are severely threatened by environmental
pollutants, diseases, and pests, so Jeff planted a wildflower patch and seeded the orchard floor
in clover to give them something to eat year round.
The orchard proudly hosts its own hive of wild
honeybees, that find shelter in the decayed trunk
of an old oak tree. We would love to taste the honey,
but we don't want to bother the bees.

Since taking charge of the orchard in 2002,
Jeff has worked hard to increase its
population of beneficial insects:

- Ladybugs and their larvae keep aphids in check. Soldier beetles eat a varied diet of many harmful bugs. Sightings of praying mantises, lacewings, beneficial wasps, and other good guys are now so common
that we have observed another good sign of a healthy ecosystem: increased population of frogs,
lizards, and birds.
No sprays that harm beneficial insects are used,
organic or not.


Grinding the prunings with a flail mower
instead of burning them adds organic matter
to the soil and helps keep the sky clear.

New irrigation lines were dug to deliver the right
amount of gravity-fed water to the trees based
on daily monitoring of evapotranspiration rates
following a scientific model provided by UC Davis,
coupled with data from the local weather station.


Plant bugs, a.k.a. stink bugs,
are our chief nemesis. They taste foul
to most predators, but Guinea hens like them.

So we got a flock of these funny looking birds
searching for bugs in the orchard all day long.
At night they roost in a tall oak tree out of
reach of predators. Contrary to what some
Guinea afficionados will tell you, the hens are
quite capable of building a beautiful nest and
hatching their own babies.

I manage the orchard using Integrated Pest Management techniques (IPM)
for more information on IPM methods, please visit

http://www.ipm.ucdavis.edu/PMG/crops-agriculture.html

LIST OF SPRAYS USED BY TYPE OF FRUIT

 

Figs, Persimmons, Pomegranates, Kiwifruit
Absolutely No Sprays

Citrus (Mandarins, Clementines, Lemons)

Bordeaux mixture (accepted for organic use) against brown rot

Surround (finely powdered kaolin clay) (accepted for organic use) to protect the trees from sunburn.
Foliar fertilizer zinc sulfate, low biuret urea and Helena brand Ele Max.

 Plums
Dormant oil
(accepted for organic use) against aphids

Grapes
Bordeaux mixture and JMS Stylet oil
(Both accepted for organic use) against powdery mildew and botrytis rot


Apples & Pears

Dormant oil (accepted for organic use) the most important spray of the  season against every pest.

Bordeaux mixture (accepted for organic use) against fireblight

Agrimycin (accepted for organic use) against fireblight

Surround (finely powdered kaolin clay) (accepted for organic use) to protect the fruit from sunburn. Also discourages chewing bugs.

The following four materials are used alternately on an as-needed basis against coddling moth (the worm in the apple), as indicated by careful monitoring of insect traps. We rotate them to keep from breeding disease resistance in pests. None of them harm beneficial insects.

Dipel (BT) (accepted for organic use) against coddling moths

Intrepid against coddling moths (not OMRI registered. Only affect Lepidoptera insects, and they have to eat it for it to work.)


California growers file a monthly report of pest control materials used with their County Agricultural Commissioner’s office.
For specific information about pest control materials,
please visit www.greenbook.net