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Which organism is responsible for causing root-knots in tobacco?
  • a)
    Nicotiana tabacum
  • b)
    Caenorhabditis elegans
  • c)
    Ascaris lumbricoides
  • d)
    Meloidogyne incognitia
Correct answer is option 'D'. Can you explain this answer?
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Which organism is responsible for causing root-knots in tobacco?a)Nic...


Organism causing root-knots in tobacco:

Meloidogyne incognita

- Explanation:
Meloidogyne incognita is a type of plant-parasitic nematode that causes root-knot disease in various crops including tobacco. This nematode infects the roots of the plant and induces the formation of characteristic galls or knots on the root system. These galls disrupt the normal functioning of the roots, leading to stunted growth, nutrient deficiencies, and decreased crop yield.

- Effects on tobacco plants:
In tobacco plants, Meloidogyne incognita can significantly impact the overall health and productivity of the crop. Infected plants may show symptoms such as wilting, yellowing of leaves, and reduced growth due to the damage caused to the root system. Severe infestations can even result in the death of the plant.

- Management:
To prevent and manage root-knot nematode infestations in tobacco crops, farmers can employ various strategies such as crop rotation, using resistant cultivars, practicing good sanitation measures, and applying nematicides when necessary. These methods can help control the population of Meloidogyne incognita and minimize the damage to tobacco plants.

- Conclusion:
Meloidogyne incognita is the organism responsible for causing root-knots in tobacco plants. Understanding the effects of this nematode and implementing effective management practices can help farmers protect their crops and ensure a healthy yield of tobacco.
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Which organism is responsible for causing root-knots in tobacco?a)Nic...
Root knots in tobacco plant are caused by a Melodogyne incognitia.
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Which organism is responsible for causing root-knots in tobacco?a)Nicotiana tabacumb)Caenorhabditis elegansc)Ascaris lumbricoidesd)Meloidogyne incognitiaCorrect answer is option 'D'. Can you explain this answer?
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