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Wine grape > Stem cracking
Why Does Wine grape Suffer from Stem Cracking?
Wine grape, also known as European grape
Stem cracking is a prevalent disease in Wine grape, often leading to low yields and premature ripening. This physiological disorder is caused primarily by erratic watering patterns and certain soil conditions, causing major economic losses if uncured.

Symptom Analysis

Distinct signs of stem cracking on Wine grape include cracked, bumpy surfaces on the trunk, abnormal growth including swollen stem, and leaves turning yellow with prominent vein pattern.
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What Causes Stem cracking Disease on Wine grape?

Erratic watering
Stem cracking is triggered due to inconsistent watering, where rapidly enlarging cells cannot compensate for sudden drought stress, causing the stem to crack.
Soil conditions
Heavy clay soils that dry and crack can contribute to the problem by hampering the easy absorption of water by the plant roots, increasing drought stress.
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How to Treat Stem cracking Disease on Wine grape?

Non pesticide
Proper irrigation techniques: Consistent watering using drip irrigation or soaker hoses can prevent stem cracking by avoiding water stress.

Amend soil: Adding organic matter or sand to heavier clay soils can improve water penetration and retention, reducing chances of stem cracking.
Pesticide
Use of Anti-Transpirants: Applying anti-transpirants can reduce water loss from Wine grape's stems and leaves, decreasing the chances of stem cracking.

How to Prevent Stem cracking on Wine grape?

Consistent Watering
Maintain a steady watering schedule that sufficiently hydrates the plant without causing waterlogs or droughts. Drip irrigation systems can be used for this.
Soil conditioning
Consider improving your soil structure with organic matter or sand, promoting better water absorption and retention.
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When is Stem cracking Most Active Period on Wine grape?

Stem cracking is mostly active during hot, dry seasons when water demand is high and the risk of drought stress is prevalent. The stress causes the stem cells to burst, creating visible cracks.

Infectivity

Stem cracking is a physiological disorder and is not infectious, as it does not spread from plant to plant.

Lethality

If left untreated, stem cracking can cause serious damage and stunted growth, which may lead to the death of Wine grape.

FAQs on Wine Grape

What causes stem cracking in Wine grape?
The main cause of stem cracking is inconsistent watering. Moreover, plants grown in heavy clay soils can also face this issue due to poorer absorption and retention of water.
How can I treat stem cracking on Wine grape?
Implementing a consistent watering schedule and conditioning the soil for better water absorption can help mitigate the impact. Pesticides like Anti-Transpirants can also be used.
Is stem cracking infectious?
No, stem cracking is a physiological disorder and does not spread from plant to plant.
Can stem cracking kill Wine grape?
If left untreated, stem cracking can cause severe damage and potentially lead to the death of the plant.
How to prevent stem cracking in Wine grape?
You can prevent stem cracking by providing consistent watering and improving your soil's water absorption and retention.
When is stem cracking most prevalent?
Stem cracking is most prevalent during hot and dry seasons when water demand is high.
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