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रताळे

Category:
Farmer Knowledge
Life Cycle Of Pest:
Description: Stage 1: Egg Stage 2: Larvae Stage 3: Pupae Stage 4: Adult
Mark Of Identification: Small, legless & pale yellow in colour with a brown head. Small, ant-like, 6-8 mm long. Head is bluish brown, thorax & legs brownish red and antenna bright red in colour.
 

Life History:

 100-200, on the
tubers & stems of vines by making small cavities.		 Pupation in the Larva
larval burrows in vines.
Management (Pest Control):
Chemical: Spray with 0.1 % carbaryl. Apply phorate 10 G in the soil at planting @ 10 kg/ha.
Organic: Spray G Agro Beauveria 5gm/lit 2 to 3 spray at 21 days interval.
Nutrients
 

Crop Stage Images
Crop Stage Germination Transplanting to plant establish stage Flower Initiation to 1st picking Vegetative Stage Harvesting
Duration
(in days)		 10 30 30 80
 

Nutrients (Kg/ha)

 N 20 60 80 40
P 7.50 7.50 15 7.50
K 10 30 40 20
Pests
Sweet Potato WeevilSweet Potato Leaf Eating Caterpillar / Sphinx Caterpillar
Life Cycle Of Pest:
Description: Stage 1: Egg Stage 2: Larvae Stage 3: Pupae Stage 4: Adult
Mark Of Identification: Small, legless & pale yellow in colour with a brown head. Small, ant-like, 6-8 mm long. Head is bluish brown, thorax & legs brownish red and antenna bright red in colour.
 

Life History:

 100-200, on the
tubers & stems of vines by making small cavities.		 Pupation in the Larva
larval burrows in vines.
Management (Pest Control):
Chemical: Spray with 0.1 % carbaryl. Apply phorate 10 G in the soil at planting @ 10 kg/ha.
Organic: Spray G Agro Beauveria 5gm/lit 2 to 3 spray at 21 days interval.
Life Cycle Of Pest:
Description: Stage 1: Egg Stage 2: Larvae Stage 3: Pupae Stage 4: Adult
Mark Of Identification:
 

Life History:

 Pupation in
the soil.(Hibernation)		 Seed like laid
singly on leaves.
Management (Pest Control):
Chemical: Dusting the crop with 10% carbaryl dust @ 20 kg/ha.
Organic: Spray G Agro Beauveria 5gm/lit + G Agro Metarohizium 5ml/lit 2 to 3 spray at 21 days interval.
test

Diseases/Pest on Sweet Potato :

  • Sweet Potato Weevil
  • Sweet Potato Leaf Eating Caterpillar / Sphinx Caterpillar

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Sweet Potato Weevil

Disease / pest Damage stage Management / Chemical Organic

Adult Weevil:

  • Small, ant-like, 6-8 mm long. Head is bluish brown, thorax & legs brownish red and antenna bright red in colour.
  • Grub : small, legless & pale yellow in colour with a brown head.

Nature Of Damage:

  • Grubs bore into the stems in the field and make tunnels feeding on the soft pith. Grubs as well as adults bore into the tubers both in the fields and in godowns. Infested tubers show dark patches and ultimetly rot. Such tubers lose taste and become unfit for consumption. Considerable damage (upto 70%) is caused by the pest.

Management:

  • Healthy cuttings should be selected for planting.
  • Perodical hoeing closes the cracks in fields & minimizes the damage.
  • Use of pheromone traps has been found successful in minimizing the damage.
  • After harvest of the crop vines should be collected & destroyed.
  • Follow proper crop rotation.
  • Spray with 0.1 % carbaryl.
  • Apply phorate 10 G in the soil at planting @ 10 kg/ha.

Leaf Eating Caterpillar/Sphinx Caterpillar

Disease / pest Damage stage Management / Chemical Organic

Damage Crops:

  • Sweet potato, mug, udid & til.

Management:

  • Hand picking & destruction of caterpillar in early stage of infestation.
  • Ploughing the field after harvest will expose the pupae.
  • Dusting the crop with 10% carbaryl dust @ 20 kg/ha.

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