Pests Of Jatropha

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Jatropha Curcas is getting significance commercially as the demand of nonrenewable fuel sources increases tremendously and likewise Jatropha is an environment-friendly energy plantation.

Jatropha Curcas is acquiring value commercially as the need of nonrenewable fuel sources increases greatly and likewise Jatropha is an environment-friendly energy plantation. Plantation of this plant is thought about to be an excellent fuel replacement and it is also extremely cost-effective compared to other fuels. Recently, Jatropha is facing some difficulty with bugs and diseases. The insects are classified into 2 varieties: Pest that affect young plants and Pest that impact grown plants.


Young plant insects: Cutworm, Scarabeid Beetle, Army worm, Grasshopper.


Agrotis ipsilon: It is frequently called Cut worm. This insect affects the seedlings and young Jatropha plants. If the plant is affected by the cutworm, the stem gets cut nearer to the soil surface and this will shrunk the plant totally.


Control: This pest can be controlled by choosing the larva found around the plants or by mixing the bran, sawdust with insecticides.


Scarabaeid Beetle: This pest ruins the root of the young plant. Initially, the larva takes in the raw materials present in the soil and after that comes to the root. The larva attack may kill the entire plant.


Control: The plant with great resistance power can conquer the insect. For heavy attack, insecticides with elements carbosulfan and carbofuran can be utilized to kill the pest.


Army worm: Spodoptera litura presence can be identified by biting in the leaves. The serious infection could completely kill the plants.


Control: Insecticides are used to control the pests.


Grasshopper: This is common pest found in several plants. Valanga nigricornis and Locusta migratoria widely assaults the plant. The bug frequently attacks the young plant.


Control: The insecticides utilized betacyfluthrin, cypermethrin, thiodicarb, MIPC, and fipronil.


Pest observed in fully grown plants:


Pest of Stem: Ostrinia furnacalis, Xyleborus spp.


Ostrinia furnacalis and Xyleborus: This pest damages the Jatropha stem and it is widely seen in Indonesia. The stem attacked by this bug generally fall down. The presence can be identified by the larva penetration hole at the stem.


Control: The Insecticide usually used to manage this bug is carbofuran.


Pest of leaf: The common pests observed are leaf caterpillar, Neetle caterpillar, Leaf hopper, Mite, Ear corn caterpillar.


Leaf Caterpillar: This insect can consume all the leaves of the plant in other words duration. The quality and yield of the seeds get decreased due to the heavy attack.


Control: This can be managed by choosing the old larvae around the surface and discarding the attacked leaves.


Needle Caterpillar: This caterpillar is covered with spines and produces a burning feeling when enabled to call with skin as it produces particular chemical substance. Initially the bug crowded in the leaf and after that spread out all over the plant when it ages.


Control: Manually, the pest can be eliminated only by soaking it in water or kerosene. The heavy attack can be managed by spraying organophosphate insecticides.


Leaf Hopper: This insect is discovered primarily in tropical and subtropical areas. The bug targets the leaf and draws all the nutrients of the leaf and gets curls at the tip. Later, the entire leaf dry and pass away.


Control: The heavy attack can be managed by utilizing insecticides like imidachloprid, beta cyfluthrin or carbosulfan.


Mite: Mite also attacks the leaf and makes the whole plant weak. The pest presence can be identified when the leaf become yellow-colored, shrinks, reddens and fall down. The bug can also be spread through fallen leaves.


Control: Some preventive steps can be done like appropriate sanitation and burning the fallen leaves. Heavy attack can be treated by spraying insecticides.


Some awful insect which attacks flower and fruit are, Stink bug (Nezara viridula)


Chrysocoris javanus, Tip borer caterpillar.


Stink Bug: Sting bug is a serious pest which attacks the plant throughout blossom period so the crop yield completely falls down. This insect is seen around the tropical region.


The harmful enzyme in the plant diminishes the entire plant.


Control: Insecticides recommended for this insect is chlorfluazuron, diflubenzuron, alfamethrin, and lamda cyhalothrin.


Tip borer caterpillar: The insects typically occurs attacks the plant in flowering season and this pest is seen widely in tropical regions. The female pest laid the eggs on the tender part of the plant and the young larvae feed the young fruits and plant suggestions.


Control: Manually, the assaulted seeds are advised to burn. The insecticides like monocrotophos and bensultap are sprayed at the blooming season.

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