Okra is infamous for its susceptibility to root-knot nematodes; it is also extremely sensitive to sting nematodes. Because of this, okra should not be planted in land known to have severe problems with these nematodes in recent crops.
Is root-knot a disease of okra?
Description: Root knot nematodes are tiny ‘eelworms’ that live in soil and become plant parasites when they use okra roots as their nurseries. Often nematodes enter okra roots through small injuries. As their numbers multiply, small feeder roots are destroyed, and irregular galls take their place.
What plants are not affected by root-knot nematodes?
In the home landscape, some bedding plants are resistant to root-knot nematodes including zinnia, salvia and marigold. Some damage may occur to snapdragons and pansies, especially when plants are stressed.
What plants are affected by root-knot nematodes?
Other common garden vegetables grown during mid- to late summer, such as tomato, pepper, cucumber, squash, eggplant, and okra also are highly susceptible to root-knot nematode. Plants growing in nematode-infested soils usually are unthrifty, stunted, yellowish, and have galled and decayed roots.
What crop does root-knot affect?
Root-knot nematodes (Meloidogyne spp.) are minute, worm-like animals that are very common in soil. They have a wide host range, and cause problems in many annual and perennial crops. Tomatoes are among the most seriously affected, with the nematodes causing problems in all growing areas.
Why does my okra leaves have black spots?
What caused it? The leaf spots are caused by the fungus Cercospora malayensis and Cercospora abelmoschi. It survives and overwinters on infected plant debris in the soil and thus infects roots and lower leaves of the okra plants. The spores are spread secondarily via wind, rain, irrigation and mechanical tools.
How do you treat okra?
To control the spread of Cercospora leaf spot, remove and dispose of infected leaves. Once the infected leaves have been removed, spray a fungicide on the underside of the okra leaves in the afternoon. Always practice crop rotation, especially for subsequent host crops. Control weeds that harbor the disease.
Which crop is most susceptible crop for root knot of nematode?
Leguminous Crops
The root-knot nematodes Meloidogyne incognita and Meloidogyne javanica are parasitic to Bambara roots. Root infestation is usually much greater on light-textured soils.
What temperature kills root-knot nematodes?
Root knot nematodes, including eggs, die when soil temperature exceeds 125°F for 30 minutes or 130°F for 5 minutes. The effectiveness of solarization is reduced in cool coastal areas, where summer temperatures commonly remain below 80°F.
How do I know if my soil has nematodes?
How to identify nematode damage in your garden
- Stunted growth.
- Plant decline or poor performance and yield.
- Leaf yellowing.
- Galls, swelling, or knots on roots (usually from root-knot nematodes)
- Roots that have egg cysts (from the cyst nematode)
How do I know if I have root-knot nematodes?
Signs/symptoms
Swellings or nodules on plant roots can indicate root-knot nematodes. Plants fail to establish, are stunted, wilt in hot weather, and decline. Affected plants produce fewer and smaller fruit. Root crops such as carrots may be deformed (forked carrots) or have hairy roots with nodules.
What to plant to get rid of nematodes?
Some plants may act as trap crops that prevent nematodes from maturing and reproducing once they invade the roots. Some marigolds, a few varieties of chrysanthemums, castor beans, partridge peas, several Crotalaria spp., velvetbeans, and rapeseed (canola) are considered nematode suppressive plants.
Is there a downside to nematodes?
Beneficial nematodes are natural and effective for getting rid of target pests, but they have disadvantages, too, including: They only work for pests in your soil. They will not harm pests that live and feed on plant leaves (unless those pests have a soil-dwelling stage in their life cycle).
What vegetables are resistant to root knot nematodes?
Several plants such as broccoli, beet, Brussels sprouts, cabbage, collards, corn, English peas, garlic, mustard, onion, and potato are less susceptible to injury from root-knot nematode primarily because they are grown during cool weather when this nematode is not as active.
How long do root knot nematodes live?
The length of a root-knot nematode life cycle varies among species but can be as short as two weeks. Nematodes in cooler regions typically have longer life cycles. Eggs may remain inside root tissue or may be released into the soil matrix.
Which type of soil is most favored for root-knot nematode?
sandy soils
Root-knot nematode is most common in warm, moist, sandy soils.
Should you trim okra leaves?
Cutting back okra allows the plants to rejuvenate to produce a late summer/fall crop. Cut back plants using a mower or pruning shears, leaving 6 to 12 inches of each plant above the ground.
What causes bumps on okra?
A: The bumps are “stings” from stinkbug feeding. Stinkbugs insert their hollow mouthpart into the okra skin and suck out juice. When they leave, the pod heals the wound with a characteristic white bump. Stinkbugs are tough to control when adults.
How do you make okra produce more?
3 Ways to Make Your Okra Produce More (Tips)
- Ensure Optimal Okra Growing Conditions (Sun, Space, Soil, and Water) Sun. Space. Soil. Water.
- Give Your Okra Plants Enough Nutrients.
- Plant High Yielding Okra Varieties.
Which is the most serious disease of okra?
Yellow Vein Mosaic Virus (YVMV):
This is the most important and destructive viral disease in bhendi. The disease infects at all the stages of crop growth and severely reduces growth and yield. The disease is transmitted by white fly.
What’s wrong with my okra?
Root-knot nematodes can be a serious problem with okra. If a plant is stunted, yellow, or not producing at full capacity, then pull the plant out of the ground and check for galls on the roots. These galls are caused by nematodes, which are microscopic worms.