Insect – Page 6 – Gramophone

Control of Semilooper In Soyabean:-

24/07/2018

Semilooper In Soyabean:-

Soybean looper is a more serious pest in soybeans.
Crops can be attacked at any stage but are at greatest risk during flowering and podding Stage.
They chew holes in the leaf, and then feed from the leaf margin.

Control :-

Deep Summer Ploughing.
Spray Quinalphos 25 EC @ 400ml/Acre or Profenophos 50% EC @ 400ml/Acre or Spinosad 45% SC@ 60ml/acre.

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Control of White fly in Soybean

21/07/2018

Control of White fly in Soybean :-

Nymph and adults suck the cell sap from the leaves. The affected leaves curl and dry.
The affected plants show stunted growth. White flies are also responsible for transmitting yellow vein mosaic virus or leaf curl disease.
3-4 foliar spray of Profenofos @ 50 ml/pump or Thaimathoxam @ 5 gm/pump or Acetamiprid 20% SP @15 gm/pump at 10 days interval.

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Management of Tobacco caterpillar in Soybean

20/07/2018

Symptoms of damage: – Larvae feed on the chlorophyll of the leaves. The eaten leaves give the appearance of whitish yellow web.

Management

Deep summer ploughing.
Avoid pre-monsoon sowing.
Optimum seed rate (70-100 kg/ha) should be used.
Collect and destroy infested plant parts, egg masses and larva.
Install sex pheromone trap @10 traps/ha for early deduction of the pest.
Erection of bird perches @10-12/ha.
Field Sanitation;Remove the infested plant parts at least once in 10 days and bury them in compost pit to monitor and reduce the populations of tobacco caterpillar. Traps are used for monitoring the pest situation.
Install five sex pheromone traps per hectare (change septa after 3 weeks), specific for male adults of tobacco caterpillar (separate pheromone for each).
Apply Profenophos 50 % EC@ 400 ml/acre or quinalphos 25% EC @ 400 ml/acre
In case of severe infestation apply Emamectin Benzoate @ 80 Gm/acre

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Integrated Management of Pink Bollworm in Cotton

11/07/2018

Integrated Management of Pink Bollworm in Cotton:-

Terminate cotton crop by December – mid January.
Do not store infected or stained cotton in house / godowns.
Crop rotation should be followed to break the life cycle of pink bollworm.
Install pheromone traps @5/ha, after 45 days of sowing for monitoring month activity of pink bollworm larvae within flower.
At boll formation stage, farmers are advised to inspect presence and damage of pink bollworm by plucking 20 green bolls from different plants randomly.
picking of clean and infected cotton may be carried out separately clean cotton may be stored or marketed. Infected cotton should be destroyed.
One spray of neem seed kernek extract 5%+neem oil 5 ml/lit. may be taken up at 60 days after sowing.

Table:- Insecticide suggested for Pink Bollworm Management

Month	Insecticide	Dose per 10 Litre of Water*
September	Quinalphos 25 EC Thiodicarb 75 WP	20 ml 20 gm
October	Chlorpyriphos 20 EC Thiodicarb 75 WP	25 ml 20 gm
November	Fenvalerate 20 EC Cypermethrin 25 EC	10 ml 10 ml

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Girdle beetle in Soybean

07/07/2018

Girdle beetle in Soybean:-

Symptoms of damage:-

Girdling of stems and petioles.
The inside of the stem is eaten by the larvae and a tunnel is formed inside the stem.
The leaves of plant of infected portion are unable to get the nutrient and are dried up.
In later stages the plant is cut at about 15 to 25 cm above the ground.

Management:-

Deep summer plough.
Intercropping with maize or sorghum should be avoided.
Crop rotation should be followed.
Avoid excess nitrogenous fertilizers.
Collect and destroy infested plant parts and egg masses.
Remove the infested plant parts at least once in 10 days and bury them in compost pit to monitor and reduce the populations of girdle beetle.

Control:-

Apply phorate 10 G @ 10 kg/ha or carbofuran 3 G @ 30 kg/ha at the time of sowing.
Spray Quinalphos 25 EC or Triazophos 40 EC @ 3 ml/lit. at the crop age of 30-35 days and repeal after 15-20 days.

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Control of Red Pumpkin Bettle in Watermelon

23/03/2018

Red Pumpkin Beetle in Watermelon:-

Damage-

The grubs feed on the roots and underground portion of host plants and fruits touching the soil.
The damaged roots and infested underground, portion of stems start rotting due to secondary infection by saproliytic fungi, and the unripe fruits of such vines dry up.
Infested fruits become unfit for human consumption.
Adult beetles feed voraciously on leaf lamina making irregular holes.
They prefer young seedling and tender leaves and damage may even kill the seedlings.

Control-

As insect pupate in the soil, deep ploughing soon after the crop exposes and kill grubs and pupae.
Apply Cartap hydrochloride 3 G granule 3-4cm deep in soil near base of germinated seedlings.
Spray the crop with Cypermethrin 25% EC (1 ml/lit) +Dimethoat 30% EC (2 Ml/litre ) or Carbaryl 50% WP (3 gm/Litre) of water at fortnight intervals starting from 25 days after transplanting to control the pest.

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Control of Aphids on Bottle Gourd

21/03/2018

The affected parts turn yellow, get curled, wrinkle and deformed in shape and ultimately dry and die away.
Spray dimethoate 30 ml per pump or Imidacloprid 17.8% SL 10 ml per pump at fortnightly intervals.

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Control of Aphids on Sponge Gourd and Ridge Gourd

01/03/2018

Control of Aphids on Sponge Gourd and Ridge Gourd

The affected parts turn yellow, get curled, wrinkle and deformed in shape and ultimately dry and die away.
Spray dimathoat 30 ml per pump or Imidaclorpid 17.8% SL 10 ml per pump at fortnightly intervals.

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Control of White fly in Okra

26/02/2018

Control of White fly in Okra:-

Nymph and adults suck the cell sap from the leaves. The affected leaves curl and dry.
The affected plants show stuned growth. White flies are also responsible for transmiting yellow vein mosaic virus or leaf curl disease.
Soil application of Carbofuran 3 G 20 Kg/ha at the time of sowing.
4-5 foliar spray of Dimethoat 30 ml/pump or thaimathoxam 5 gm/pump or Acetamiprid 20% SP 15 gm/pump at 10 days interval.

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Plants infected with thrips develop spotted appearance on leaves which turn pale-white blotches due to drainage of sap. Due to thrips attack reduces production. For effective control spray Profenofos 400 ml /acre or fipronil 5% SC 400 ml/acre or Thaimethoxam 100 gm/acre after every 10 days interval.

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