3. Prevent Insect, Disease, and Weed Problems in
the Garden |
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No garden this side of Eden is going to be entirely pest-free.
But you can reduce the risk of insect, disease, and weed problems
if you take a few steps. For instance, choose a location with 8
to 10 hours of sunlight per day. This aids the growth of most vegetable
crops. It also speeds the evaporation of water from plant surfaces,
reducing the risk of disease.
Gardeners are generally encouraged not to save their own seed but
to purchase seeds from reputable seed dealers. Select varieties
that have a built-in resistance to disease and certain insect pests.
Also, use disease-free materials. All planting material should be
healthy and free of yellowing and brown or black spots, and should
not be stunted or show poor development.
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Don’t plant any crop from the same group of vegetables in the
same portion of your garden more than once every three or four years.
Rotate your crops. Certain diseases survive the winter on crop debris
and may build up over time. |
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Don’t
underfertilize or overfertilize your plants. To determine the amounts
and availability of nutrients in your garden, have the soil tested.
For information on how to do this, contact your local U of I Extension
office. |
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Maintain
proper soil pH. A soil that is slightly acidic to neutral, 6.0 to
6.9, is best for growing most vegetables. If your soil test indicates
that the soil is more acidic than it should be, apply the recommended
amount of limestone. If your soil is too alkaline, add sulphur. |
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Wait
to sow seeds until the soil has warmed, because young plants grow
faster and often escape infection. Also, plant vegetables at recommended
spacings to allow the air and sun to dry off the lower foliage and,
therefore, reduce relative humidity around the plants. Stalking, caging,
trellising, and pruning plants also provide more air circulation. |
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Plant
in well-drained soil. In heavy or poorly drained soils, try planting
on ridges, hills, or in raised beds to prevent seedling blights, root
rots, or foliage diseases in plants that contact damp soil. Adding
organic matter to the soil will help to loosen poorly drained clay
soils. |
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Water
the soil thoroughly by adding an inch of water per week when there
is not sufficient rainfall. If plants suffer from too much or too
little water, they will be less vigorous and more susceptible to problems. |
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