Uses of the biological insecticide Metarhizium anisopliae

28/02/2025Posted on
Uses of the biological insecticide Metarhizium anisopliae

Metarhizium anisopliae is a fungus-based organic insecticide. It is found freely in the soil and it is commonly found as a parasite in insects. 

When the spores of Metarhizium anisopliae come in contact with the target insect, they attach to their covering and Spores germinate when there is proper temperature and humidity. Their germinal tubes enter the insect’s body through the respiratory holes (spiracles), sensory organs and other soft parts.

This fungus increases itself by absorbing the physical food substances of the insect by making a fungal trap in the entire body of the insect. Metarhizium anisopliae produces spores even at less than 50% moisture. Because of this it works in all circumstances.

Metarhizium anisopliae is used for the control of beetles, white grubs, termites, caterpillars, semi-loopers, cutworms, mealybugs and aphids.

Method of use:

  • For soil application, Metarhizium anisopliae at the rate of 1 kg per acre mixed with about 75 kg of farm yard manure and should be used at the time of last ploughing.

  • For pest control in standing crops spray 1 kg per acre in 400-500 litres of water.

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Causes and diagnosis of fruit cracking in tomato crop

27/02/2025Posted on
Causes and diagnosis of fruit cracking in tomato crop

In tomato crops, fruit cracking is a physical disorder and it usually appears at the time of maturity. In this disorder, the fruits split in two ways, vertical and circular.

Fruit cracking in tomato crops is mainly due to two reasons, the first reason is irregular irrigation in the crop like the land that is dry for a long time and sudden heavy irrigation. And the second reason is the deficiency of a Boron micronutrient in the soil.

Diagnosis of fruit cracking: To avoid this problem, irrigate the crop in a balanced way from time to time. And for the boron nutrient supplements, spray Rich Bor (Boron 20%) @ 1-1.5 gm per litre of water or Rich Boramin-CA (Amino Acid, Boron, Calcium) @ 2-3 ml per litre of water.

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Symptoms and control of aphids in watermelon crop

26/02/2025Posted on
Symptoms and control of aphids in watermelon crop

This pest affects the leaves and shoots, due to which the leaves begin to curl and wither. Plant growth is stunted, as well as black mold develops on the leaves due to the secretion of honeydew from the insect.

Control: As soon as the infestation is noticed to control this pest spray, Novaceta (Acetamiprid 20 % SP) @ 30 gram per acre or Media ( Imidacloprid 17.8% SL) @ 40-50 ml per acre + Nova Maxx (Gibberellic acid 0.001%) @ 300 ml per acre in 150-200 litres of water.

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Know the reasons and prevention measure for small fruits dropping in gourd crop

25/02/2025Posted on
Know the reasons and prevention measure for small fruits dropping in gourd crop

The farmers cultivating gourds often face the problem of small fruits turning yellow and drying up, and this causes a huge loss in yield.

Causes of small fruit drop:

  • Fruits start falling due to fungal diseases in plants.

  • This problem can also occur when there is an outbreak of pests in the crop.

  • Small gourd fruits start falling even if there is irregular irrigation or lack of irrigation in the crop.

  • Unbalanced use of fertilizers also results in fruit drop.

  • Small fruits start falling due to improper pollination.

Initial symptoms of small fruit drop:

In the initial stage, the flowers attached to the small fruits start drying up, and gradually the small fruits start turning yellow and brown in colour. And later the fruits dry up completely and fall off.

Preventions:

  • Inspect the crop from time to time.

  • Make proper arrangements for drainage in the field.

  • Do not use excessive irrigation and fertilizers.

  • If symptoms of fungal diseases or fruit flies and sucking insects appear, do proper spraying for control.

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Symptoms and control measures of sucking pests in brinjal crop

24/02/2025Posted on
Symptoms and control measures of sucking pests in brinjal crop

Mites: They spread webs on the underside of the leaves and suck the sap from the leaves. Due to this, the leaves start appearing red.

Spray Tusk (Malathion 50.00% EC) @ 600 ml/acre or Meothrin (Fenpropathrin 30 % EC) @ 100 – 136 ml per acre mixed in 150 -200 litres of water.

Jassid: These insects suck the sap from the lower surface of the leaves, due to which the leaves turn yellow and become weak.

Spray Solomon (Beta-cyfluthrin 08.49 % + Imidacloprid 19.81 % w/w OD) @ 70 -80 ml per acre or Tafgor (Dimethoate 30 % EC) @ 792 ml per acre in 150 – 200 litres of water.

Whitefly: They suck the sap from the leaves, which results in the leaves becoming shrivel. Apart from this, these insects also work to spread viral diseases from one plant to another. 

Spray Pager (Diafenthiuron 50 % WP) @ 240 gm/acre and Areva (Thiamethoxam 25 % WG) @ 80 gm/acre in 150 – 200 litres of water.

Aphid: These insects are small and green in colour, which live on the lower surface of the leaves and sucks the sap, due to which the leaves turn yellow.

Spray, Solomon (Beta-cyfluthrin 08.49 % + Imidacloprid 19.81 % w/w OD) @ 70 -80 ml per acre mixed with 150 to 200 litres of water.

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Symptoms and control of powdery mildew disease in watermelon

23/02/2025Posted on
Symptoms and control of powdery mildew disease in watermelon

The disease causes a white powdery growth on the upper leaves, stems and young growing parts of plants, and as the infection progresses, the entire leaf becomes covered with the fungus. The leaves of infected plants start falling prematurely. If the infection occurs at the fruiting stage, the fruits remain underdeveloped and become malformed.

Control: To control the disease spray, Novacone (Hexaconazole 5% SC) @ 400 ml per acre in 150-200 litres of water as soon as the symptoms appear. Also, take a spray of Nutriful Max (fulvic acid amino acid trace component) @ 250 ml per acre for good flower and fruit development.

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Symptoms and prevention of basal rot problem in onions

22/02/2025Posted on
Symptoms and prevention of basal rot problem in onions

In the initial symptoms of the disease, the leaves turn yellow and the growth of the plant stops and later the leaves dry up from the tips downwards. In the early stages of infection, the roots of the plants turn pink and later rot. In advanced stages, the bulb begins to rot from the lower end and eventually, the whole plant dies.

Prevention of Disease: To control it, as soon as the symptoms of the disease appear drench with Dhanucop (Copper oxychloride 50% WP) @ 500 gm per acre in 200 litres of water.

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Damage and control of fruit borer in tomato crop

21/02/2025Posted on
Damage and control of fruit borer in tomato crop

The caterpillar of the fruit borer is the most harmful. In the initial stage, this caterpillar eats the leaves, and later damages the fruits by piercing the fruit, the holes made by the caterpillar are circular. One caterpillar of this pest can damage 2-8 fruits, and the quality and yield of the crop also reduce.

Control: For monitoring and management of the pod borer, apply Helico-O-Lure @ 10 funnel traps per acre in the field. If infestation is observed, spray Cosko (Chlorantraniliprole 18.50% SC) @ 60 ml per acre or Lamanova (Lambda Cyhalothrin 04.90 % CS) @ 120 ml per acre with 150-200 litres of water.

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Identification and control of tobacco caterpillar in cauliflower

20/02/2025Posted on
Identification and control of tobacco caterpillar in cauliflower

The moths of this insect are dark brown in colour and there is a white stripe on the front wing with black spots in between. These moths lay eggs in groups covered with a white layer and there can be 40 to 200 eggs in a group. The caterpillar that comes out of the egg is green in the initial stage, which eats the leaves by scratching, and later this caterpillar becomes dark green or brown in colour. Adult larva feeds by making circular holes in the leaves and damages the cauliflower by entering from the top.

Control: As soon as the caterpillar infestation is seen, spray Emanova (Emamectin Benzoate 5% SG) @ 100 gm per acre or Cosko (Chlorantraniliprole 18.50 % SC) @ 20 ml per acre. 

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Post emergence weed management in summer paddy

19/02/2025Posted on
Pre-emergence weed management in summer paddy!

In addition to diseases and pests in paddy crops, weeds also cause a lot of damage, so it is very important to destroy weeds in time, as harmful weeds in paddy crops also attract various insects.

Post-emergence weed management:

Post-emergence weed management should be done after 10 to 12 days of transplanting and after weed germination. After the emergence of weeds in paddy crops, spray Nominee Gold (Bispyribac-Sodium 10% SC) @ 80 – 100 ml per acre mixed with 150 – 200 litres of water to control them. Bispyribac-Sodium is a selective, post-emergent herbicide, which controls grasses and broad-leaf weeds in paddy, such as Echinochloa crusgalli, Cyperus difformis, Cyperus iria, Eclipta alba, etc.

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