What Is The Primary Source Of Pomegranate Bacterial Blight?

Bacterial blight is one of the most devastating diseases of pomegranate in India. It is known to be caused by the strains of Xanthomonas axonopodis pv. punicae (xap).

Where does bacterial blight come from?

Where does bacterial blight come from? Bacterial blight is caused by the bacterium Pseudomonas syringae pv. syringae (Pss), which survives in diseased stem tissue (cankers), plant debris, and soil. Pss can be spread by insects and on pruning tools, but is more commonly spread by wind and rain.

What is the causal organism of bacterial blight of pomegranate?

Xanthomonas axonopodis pv. punicae
Bacterial blight caused by Xanthomonas axonopodis pv. punicae is a major disease of pomegranate. Bacterial blight drastically reduces the yield and quality of fruits, which are critical for pomegranate production.

Which is best fungicide for pomegranate?

Spraying of systemic fungicides namely Hexaconazole @1ml/lit / Thiophanate methyl @ 1g/lit/ Carbendazim @ 1g/lit at 20 days interval is quite effective. Among the contact fungicides Chlorothalonil (2g/l) followed by Mancozeb (2g/l) were more efficacious.

Under what environment does bacterial blight spread?

Favorable Environmental Conditions
Development of bacterial blight is promoted by cool, wet weather (70 – 80°F). Infection can occur early but is most common at mid season and continues until hot and dry weather limits development. Disease outbreaks often follow windy, rainstorms.

How is blight transmitted?

Blight spreads by fungal spores that are carried by insects, wind, water and animals from infected plants, and then deposited on soil. The disease requires moisture to progress, so when dew or rain comes in contact with fungal spores in the soil, they reproduce.

How do you control bacterial blight?

Planting resistant varieties has been proven to be the most efficient, most reliable, and cheapest way to control bacterial blight. Other disease control options include: Use balanced amounts of plant nutrients, especially nitrogen. Ensure good drainage of fields (in conventionally flooded crops) and nurseries.

How do you control wilt in a pomegranate?

At initial stage drench 2ml Propiconazole + 4ml Chloropyriphos per litre water solution, drench 8-10lit of solution per tree. Do not irrigate for 2-3 days after drenching. If any plant already wilted, please drench chemical as per above mentioned, then remove entire plant along with roots and burn it.

How do you control anthracnose in pomegranates?

carbendazim + mancozeb at 0.3 per cent and propiconazole at 0.1 per cent concentration were effective in reducing the percent disease index of anthracnose under field conditions.

When Should I spray my pomegranate tree?

Typically, fruit trees are sprayed with dormant oil in late November until the bud swell stage in February or March. Refrain from applying dormant sprays after flower buds open, as doing so increases the chance of damaging the pomegranate fruit.

What pests or diseases affect pomegranate?

Diseases

• Alternaria Fruit Rot (Black Heart)
• Aspergillus Fruit Rot.
• Blue and Green Mold.
• Coniella Stem Canker and Fruit Rot.
• Gray Mold (Botrytis Fruit Rot)

Why do my pomegranates have black spots?

Another occasional fungal issue is Cercospora fruit spot, which will not only cause black rotted spots on the outside of fruit but also compressed black areas on twigs and defoliation. It can actually cause a tree to die over time.

How do you protect pomegranate fruit?

Take protective measures to ensure you’ll have a chance to savor the thirst-quenching pomegranate fruit.

1. Cover the fruit with sandwich-size paper bags and seal with a twist tie.
2. Cover the pomegranates with netting made of 1/4- to 1/2-inch mesh plastic.

Do pomegranate trees get fire blight?

Our surveys showed that anthracnose is one of the most important diseases of pomegranate in Florida. The most common symptoms are spots, blotches, defoliation, shoot blight, twig cankers, and dieback.

What is the main source of primary inoculum of bacterial blight of cotton?

Inoculum Sources
axonopodis survives in infested crop debris or seeds. Although infections may be seedborne, acid-delinting cotton seed has been instrumental in minimizing the spread of bacterial blight through contaminated seed. Volunteer seedlings may also be a source of primary inoculum for bacterial blight.

Can bacterial blight spread to other plants?

If the disease continues to progress after pruning, it may be time to cut your losses and dispose of the entire plant. Leaving it be in its condition may cause the disease to spread to other plant life in the garden.

How do bacteria enter plants?

Bacterial pathogens enter plants through wounds, principally produced by adverse weather conditions, humans, tools and machinery, insects, and nematodes, or through natural openings such as stomata, lenticels, hydathodes, nectar-producing glands, and leaf scars.

Does blight live in the soil?

Blight cannot survive in soil or fully composted plant material. It over-winters in living plant material and is spread on the wind the following year. The most common way to allow blight to remain in your garden is through ‘volunteer potatoes’.

What causes blight on plants?

Most blights are caused by bacterial or fungal infestations, which usually attack the shoots and other young, rapidly growing tissues of a plant.

Is blight a fungus?

Blight is a fungal disease which spreads through spores blown by winds from one area to another, rapidly spreading the infection. The early signs can be hard to spot, although brown patches on the leaves and stems quickly appear (see above picture).

What are the symptoms of bacterial blight disease?

Symptoms of common bacterial blight first appear on leaves as small, water-soaked spots, light green areas, or both. As these spots enlarge, the tissue in the center dies and turns brown. These irregularly shaped spots are bordered by a lemon yellow ring, which serves as a diagnostic symptom of common bacterial blight.