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Biotic stress

Biotic stress

भूरा किट्ट या रतुआ (पर्ण किट्ट):गेहूँ

Submitted by JP Jaiswal on Tue, 23/02/2010 - 16:12
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भूरा किट्ट या रतुआ (पर्ण किट्ट)

रोगकारी जीव: पक्सीनिया रिकॉन्डिटा फा. स्पि. ट्रिटिसाइ

मुख्य लक्षण: पत्तियों पर नारंगी से लेकर भूरे रंग के गोल बिखरे हुए स्फोट उत्पन्न होते हैं।

पीला किट्ट या हरदा (धारीदार किट्ट): गेहूँ

Submitted by JP Jaiswal on Tue, 23/02/2010 - 16:05
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रोग: किट्ट

पीला किट्ट या हरदा (धारीदार किट्ट)

रोगकारी जीव: पक्सीनिया स्ट्रिइफार्मिस फा. स्पि. ट्रिटिसाइ

Weeds in wheat

Submitted by JP Jaiswal on Mon, 11/05/2009 - 12:44
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Weeds

Yellow ear rot/Tundu- Bacterial disease of wheat

Submitted by JP Jaiswal on Thu, 30/04/2009 - 15:32
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Yellow Ear rot or Bacterial Rot

Causal Organism: Corynebacterium tritici

Chief symptoms: Yellow exudate on the spikes is indicative of bacterial diseases .When dry, the exudates is white to yellow white .often the spikes and necks will emerge as a distorted sticky The early leaves may also be wrinkled or twisted

Control measures:

Control measures of weed in wheat fields

Submitted by JP Jaiswal on Mon, 11/05/2009 - 12:51
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Control measures

  1. The weeds can be controlled either manually or through the use of herbicides/weedicides. One hoeing after about a month would keep the weeds under control and provides aeration to the developing root. Closer planting and cross sowing was also found effective to reduce these weeds. Because wheat is grown on a very large acreage, it is not possible to control the weeds with manual labour
  2. Use of herbicides/weedicides

(A) Broad leaf weeds: Bathua, Satyanashi, Krishnneel, Gazari, Piazi etc.

Gujhia weevil- Insect/pest of wheat

Submitted by JP Jaiswal on Sat, 02/05/2009 - 11:31
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Gujuia weevil

It attacks germinating seedlings.  As a result of heavy infestation plants die out.  Control measuring for this insect is same as for termites. 

Control measures:

Use Aldrin 5% dust or BHC 10% dust at the rate of 20-25 kg/ha and mix it well  in the soil at  the time of last plouging before sowing. 

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Aphid- Insect of wheat

Submitted by JP Jaiswal on Sat, 02/05/2009 - 11:26
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Aphids and jassids

These leaf sucking insects also damage the wheat crop resulting in discoloration of leaves.

Control measures:

Apply 0.5 litre Folithion or Thiodan or one litre Ekalux 25 EC in 800 litres of water per hectare. 

Glume blotch- Fungal disease of wheat

Submitted by JP Jaiswal on Sat, 02/05/2009 - 11:15
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Glume blotch

 Casual Organism or agents: Septoria Nodorum (leptosphaeria nodorum)

Hill bunt or stinking smut- fungal disease

Submitted by JP Jaiswal on Sat, 02/05/2009 - 11:07
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Hill bunt

Causal Organism: Tilletia caries and Tilleria foetida

Black point- Fungal disease of wheat

Submitted by JP Jaiswal on Sat, 02/05/2009 - 10:46
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Black Point

Causal Organism: Alternaria, Helminthosporium, Fusarium

 

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