Influence of planting date and insecticide on injury caused by tobacco thrips and peanut yield in North Carolina. Injury to Plants. Plantinjury can result with some insecticides if applied in hot weather. Ornamental and Flowering Plants. Vegetables. How to Mix Insecticides. Insecticide Dilution Tables. Trade Names Used in Guide. Biological Control of Crapemyrtle Bark Scale. The plants should be sprayed once or twice a week, and the foliage of some should be washed or syringed an hour or two after the treatment, to prevent injury from the insecticide. Insecticidal soap, made from standard dish soap, can effectively control soft-bodied plant pests such as aphids, mealybugs, thrips, whiteflies, spider mites, and scales. Cotton, Gossypium hirsutum (L.), plants expressing insecticidal crystal (Cry) proteins of Bacillus thuringiensis (Bt) Berliner are planted on significant acreage across the southern region... Insecticidal soaps and horticultural oils are contact pesticides, and thorough coverage of all plant parts is important to ensure contact with pests. Herbicide Injury to Garden Plants. Insecticides in the Home Landscape and Garden. Horticultural Oil Sprays. Insecticides for Indoor Use. Plant spikes that contain a systemic insecticide can be effective against sap feeding pests such as aphids, mealybugs, scales, and mites. How to Avoid Problems. Injury appears as wilting on the upper leaves, causing them to turn brown with the edges becoming curled (Figure 2). Noticeable damage can occur within days on heavily infested plants. ...may not always eliminate or reduce the need for insecticide applications for plant bugs, there may be some benefits from increased insecticide performance and reduced crop injury. PlantInjury. Loss of plant vigor and yellowing of foli-age are typical of heavy infestations. Twig die-back or premature loss of leaves may also occur. Differences in visible injury to peanut caused by tobacco thrips feeding were observed across yr, planting dates, and insecticide treatments. Several insecticidal soaps are distributed for control of insects and mites. Available under a variety of trade names, the active ingredient of all is potassium salt of fatty acids.
