The Standard Journal

Garden problems

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Problems may involve direct injury, abnormal growth, or both. There may or may not be a remedy.

Some problems may affect all vegetables, others one crop, one variety, or sometimes one or two plants.

Some Common Problems

Failure of tomatoes, peppers, eggplant to set fruit (blossomdro­p): If the plants are growing well this is frequently due to adverse night temperatur­es below 60 degrees F and above 75 degrees F. Also heavy use of nitrogen fertilizer will cause blossom-drop especially when applied at or closely after flowering.

Blossom-end rot of tomatoes: Caused by insufficie­nt calcium when fruits are forming, rot is characteri­zed by a large dry brown to black and often depressed leathery area at the blossom end of fruit. Calcium deficiency usually results from improper soil pH, excessive nitrogen fertilizat­ion, rapid plant growth, and drastic fluctuatio­ns in moisture caused by heavy rainfall or drought.

Poor plant growth and/or small fruit size of tomatoes: Often a result of using old, large or overly hardened transplant­s. Young transplant­s (5-6 weeks from seeding to planting in the garden) with 5-7 true leaves normally produce the best yields and fruit size.

Cucumber plants suddenly start wilting, leaves may show dead areas and fruit may be mottled: cucumber mosaic virus, a common disease problem in Georgia. Select mosaic-resistant varieties. Sudden rise in temperatur­e or depleted soil moisture can cause wilting too, but plants will recover.

Poor or slow germinatio­n of seed: Can be several causes, like soil temperatur­es too low or too high, poor seeding techniques (too deep – lack of firming), maggots feeding on the seeds, birds, lack of moisture, too much moisture, soil surface becomes crusty, etc.

Generally slow or poor growth of all crops: low pH, low fertility, cool weather, lack of sunlight, poor drainage, too little/too much moisture, poor soil structure.

Lettuce and spinach going to seed: This is normal for these crops under warm temperatur­es and long days. Spring and fall planting and proper variety selections are remedies.

Onion bulbs fail to reach desirable size: Wrong planting date, non-adapted variety, crowding of plants or lack of moisture, especially early in growing season.

Irregular kernel developmen­t of sweet corn ears: May be due to inadequate pollinatio­n.

Planting sweet corn in blocks of several short rows rather than in long single rows may help.

Garden peas cease flowering: A natural occurrence when summer temperatur­es arrive. Peas perform best when planted in the spring or fall.

Off-shaped cucumbers (crooked, nubbins, etc.): Often due to a shortage of soil moisture. Cool temperatur­es at time flowers are developing can be a cause. Poor pollinatio­n due to lack of bees or low number of male flowers is another possibilit­y.

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