Aphids Description: Tiny bugs are light or dark green, or black; with or without wings. The largest is 1/6″ long, the smallest is barely visible. They cluster on stems and under leaves. Aphids may cause more crop damage than any other insect, and there are few plants they don’t like. Infested leaves curl and turn yellow; plant is weakened in […]
Rhizoctonia Root Rot (on Beans) Description: Primarily attacks seedlings and young plants. Reddish-brown spots appear on lower stems. Most infected plants die as seedlings. Solution: Shallow seeding depth and planting in thoroughly warm soil helps. Sprinkle SoilGardTM Microbial Fungicide over bean seed at time of sowing, before covering seed with soil.
Pythium Wilt (Lettuce) Description: Dark yellow-brown roots, stunting, yellow of outer leaves. Root system decline. Solution: Provide good drainage; raised beds are ideal. Sprinkle SoilGard over seed at time of sowing, before covering seed with soil. When starting seed indoors, mix SoilGard with potting soil before seed is sown.
Pythium Rot (Damping-Off, Stem Rot) on Tomatoes Description: Damping-off occurs at or before germination, causing rapid decline and death of seeds or young seedlings. On older plants, disease causes severe wilting and black stem, beginning at ground level, resulting in severe stunting or death of plants. Solution: Maintain soil pH at 6.5 to 7.0. Test soil pH; if it is […]
Pythium Root Rot (Damping-Off, Seed Rot) (Peas) Description: A watery rot is characteristic. Plants are often stunted and light green because of the lack of root development. Solution: Plant as early in the season as possible. Peas are a cool-season crop, while pythium disease is most severe at temperatures from 64°-75°F, which is higher than preferred for pea germination. Sprinkle […]
Pythium Root Rot (Damping-Off) (Beans) Description: Yellowing, stunted growth, sudden seedling wilting (damping-off) and death. Can also kill seedlings before emergence. Pythium spores occur in the soil almost everywhere beans are grown. Solution: Sprinkle SoilGardTM Microbial Fungicide over seed at time of sowing, before covering seed with soil.
Powdery Mildew (Roses) Description: Powdery mildew and black spot are the “one-two punch” on roses. Powdery mildew is a problem in all parts of the U.S. Powdery mildew usually first appears on new growth, in periods of warm, dry days followed by cool, damp nights. The new leaves may become curled or twisted, and the shoots will look badly deformed. […]
Potato Leafhopper Description: These small, light green, triangle-shaped insects feed on potatoes, eggplant, vine crops, beans, rhubarb and peanuts. Hopper-burn by potato leafhopper causes 80% of insect damage on potatoes in the eastern U.S. Yield reduction can be drastic; eventually the plant dies. Solution: Super-Light Insect Barriers provide a good shield. Thorough spraying underneath leaves with Rotenone/Copper Combo or PyolaTM […]
Plum Curculio Description: Adult beetle, black or brownish black, is about 1/4″ long, very hard, and has a beak 1/4 as long as its body. They prefer apples and stone fruits (peach, plum, etc.). Adults overwinter in the trash beneath trees, in fence rows, or in wooded areas. In spring they begin appearing at late bloom. Larvae bore to the […]
Pear Scab Description: Scab first appears on the bottom and later on the side of the fruit. Infected fruit often become misshapen. Scab spores develop during the winter, in infected leaves on the ground. Infection begins at the green-tip stage of flower bud development. Infection is highest when blossoms are open, but continues for about 6-9 weeks. Solution: Spray Soap-Shield® […]