While you’re picking this year’s fruits from your backyard
orchard, it’s time to start thinking about next year’s
harvest.

"Next year’s fruit crop depends greatly on the plants’
health this year," said Gerard Krewer, an Extension Service
horticulturist with the University of Georgia Extension
Service.

Making sure your fruit plants are properly fertilized now
helps
the plants in two ways, Krewer said.

Making Flowers and Charging
Batteries

First, flower buds are forming now that will produce next
year’s
crop.

"The number of flowers you have next spring will be
determined
this year," Krewer said. The more flowers you start with,
the better your chances of having a crop after a spring
frost.

Second, fruit plants are charging up their batteries now.
They’ll
crank up next spring on the strength of the energy reserves they
build up between now and their fall shutdown.

"For the first 30 days or so next spring, a fruit plant
will depend on its stored reserves," he said. "Those
are the reserves it’s producing this fall and storing in its
roots
and stems."

Don’t rush out and start pouring on the fertilizer, though.
"Too much fertilizer could do more damage than good,"
Krewer said. "The plant could wind up making less fruit
instead
of more."

Too much fertilizer now, he said, could cause the plant to
grow too much in late summer and increase shading in the plant’s
interior, resulting in fewer flower buds. Excessive growth is
also more susceptible to cold injury this fall and winter.

Take a Soil Sample to Determine
Needs

The ideal thing to do, Krewer said, is to take a soil sample
to the county extension office. Get an analysis of your plants’
precise fertility needs.

"Summer is a great time to pull a soil test," he
said. "The readings will be closer to the actual soil
conditions
the plants experience during the growth season. The pH goes down
this time of year. So you get a better picture of your liming
needs."

One benefit of soil testing is that you can often save on
fertilizer
costs. "Often plants require only nitrogen in the
summer,"
he said.

If you really don’t want to run a soil test, the next best
thing is to use a balanced, premium-grade fertilizer.

That would supply the main nutrients plants need — nitrogen,
phosphorus and potassium — in balanced amounts. It would also
provide the micronutrients needed for good growth.

What’s Best for Berries, Isn’t for
Pears

For many fruit trees, a seat-of-the-pants rule is to apply
1 pound of premium-grade 10-10-10 per inch of trunk diameter.
But don’t apply more than 3 pounds per tree in late summer.

"For pears, apply a little less than that," Krewer
said. "Pears are prone to put on too much vegetative growth
if you fertilize them too much."

For blueberries, he said, apply 1 ounce of the same fertilizer
per foot of bush height. But don’t apply more than 6 ounces per
bush.

In rich soils or where fruit plants often grow too much, he
said, cut any of these rates by one-half to two-thirds.

Be prepared to fertilize again next spring, just before or
during bloom. "Fruit plants usually need fertilizer every
spring and every summer after harvest," Krewer said.