Verticillium wilt of cotton

12/09/2019Posted on

 

  • Plants infected at early stages are severely stunted.
  • The first symptoms can be seen as bronzing of veins.
  • It is followed by interveinal chlorosis and yellowing of leaves.
  • Finally, the leaves begin to dry, giving a scorched appearance.
  • At this stage, the characteristic diagnostic feature is the drying of the leaf margins and areas between veins, which gives a “Tigerstripe” or “Tiger claw” appearance.

 

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Control of Fusarium wilt in cotton crop

11/09/2019Posted on
  • Level up after deep plowing (6-7 inches).
  • Use disease-free seed.
  • Follow 6-year crop rotations.
  • Grow resistant varieties.
  • Seed treatment with Carboxin 37.%+ Thiram 37.5% @ 2 gm /kg or Trichoderma viride @ 5 gm/kg.
  • Apply Mycorrhiza @ 4 kg/acre at 15 days after sowing.
  • Spraying Thiaphanate methyl 75% WP @ 300 gm/acre at before flowering.
  • Spraying Propiconazole 25% EC @ 125 ml/acre at pod formation stage.

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Symptoms of Fusarium wilt in cotton

11/09/2019Posted on
  • Causal organism: Fusarium oxysporum f.sp. Vasinfevtum
  • Wilt is one of major diseases of cotton. 
  • Discolorations of leaves start from the margins and spread towards midribs.
  • The veins become darker, narrower and spots.
  • Browning and blackening of vascular tissues.

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How to control early blight of potato

10/09/2019Posted on

Spray any one fungicide for control of this disease 

  • Carbendazim 12%+ Mancozeb 63%@ 300 gm/acre. 
  • Thiophanate methyl 70% Wp @ 250 gm/acre. 
  • Chlorothrlonil 75% WP @ 250 gm/acre. 
  • Kasugamycin 5% + Copper Oxychloride 46% WP@ 300 gm/acre. 

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Early blight of potato

10/09/2019Posted on
  • The fungus attacks the foliage causing characteristics leaf spots and blight.
  • Small, isolated, scattered pore brown spots appear on the leaf.
  • Fully developed spots are irregular, brown, to dark brown in color and with concentric ring (2-5mm ) inside the spot.
  • Symptoms start from the lowest leaves and progress upward.

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Control of brown plant hopper in paddy crop

09/09/2019Posted on
  • Acephate 75% SP @ 300 gm/acre (or) 
  • Chlorpyriphos 20% EC @ 500 -1000 ml/acre (or)
  • Carbofuran 3 G @ 7.5 kg/acre.

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Brown plant hopper in Paddy crop

09/09/2019Posted on
  • crescent-shaped white eggs inserted into the midrib of the leaf sheath
  • white to brown nymphs
  • brown or white adults feeding near the base of tillers
  • The feeding damage caused by planthoppers results in the yellowing of the plants. 
  • At high population density, hopper burn or complete drying of the plants is observed. At this level, crop loss maybe 100%.

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How to Control Root-Knot Nematode in Tomato

04/09/2019Posted on
  • Use resistant varieties.
  • Do use deep summer plowing to control root-knot nematode.
  • Neem cake at the rate of 80 Kg/Acre should be applied for effective control.
  • Carbofuran 3G at the rate of 8 kg/acre should be applied as a soil treatment.
  • Paecilomyces lilacinus-1% WP @ 10 g / kg seed for seed treatment, 50 gm / meter sq Nursery Treatment, 2.5 to 5 kg/ Hectare Soil application.

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Root-Knot Nematode in Tomato

04/09/2019Posted on

Damage:-

  • The nematode attacks the roots and produces tiny galls.
  • The infected plants show symptoms of withering and wilting of leaves.
  • It blocks the movement of nutrients and water in the plant system and subjected to wilt and finally leads to death.
  • The growth of the plant is stunted by fruiting capacity adversely affected.
  • Yellow of the foliage and wilting of the upper leaves occurs.

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Control of Fusarium wilt in cotton crop

02/09/2019Posted on
  • Level up after deep plowing (6-7 inches).
  • Use disease-free seed.
  • Follow 6-year crop rotations.
  • Grow resistant varieties.
  • Seed treatment with Carboxin 37.%+ Thiram 37.5% @ 2 gm /kg or Trichoderma viride @ 5 gm/kg.
  • Apply Mycorrhiza @ 4 kg/acre at 15 days after sowing.
  • Spraying Thiaphanate methyl 75% WP @ 300 gm/acre at before flowering.
  • Spraying Propiconazole 25% EC @ 125 ml/acre at pod formation stage.

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