Jatropha Curcas is gaining importance commercially as the need of nonrenewable fuel sources increases significantly and likewise jatropha curcas is an eco-friendly energy plantation. Plantation of this plant is thought about to be an excellent fuel alternative and it is likewise extremely economical compared to other fuels. Recently, Jatropha is dealing with some trouble with pests and illness. The insects are categorized into two varieties: Pest that affect young plants and Pest that affect developed plants.

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

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

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

Scarabaeid Beetle: This insect damages the root of the young plant. Initially, the larva takes in the organic matters present in the soil and then pertains to the root. The larva attack may kill the whole plant.

Control: The plant with good resistance power can overcome the insect. For heavy attack, insecticides with parts carbosulfan and carbofuran can be utilized to eliminate the insect.

Army worm: Spodoptera litura existence can be recognized by biting in the leaves. The severe infection could completely kill the plants.

Control: Insecticides are utilized to control the pests.

Grasshopper: This prevails insect found in numerous plants. Valanga nigricornis and Locusta migratoria widely assaults the plant. The insect typically assaults the young plant.

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

Pest observed in mature plants:

Pest of Stem: Ostrinia furnacalis, Xyleborus spp.

Ostrinia furnacalis and Xyleborus: This insect harms the jatropha curcas stem and it is widely seen in Indonesia. The stem attacked by this bug typically fall down. The existence can be determined by the larva penetration hole at the stem.

Control: The Insecticide generally used to manage this insect is carbofuran.

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

Leaf Caterpillar: This pest can eat 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 controlled by picking the old larvae around the surface and throwing away the assaulted leaves.

Needle Caterpillar: This caterpillar is covered with spinal columns and produces a burning experience when to call with skin as it produces particular chemical substance. Initially the pest crowded in the leaf and after that spread all over the plant when it grows older.

Control: Manually, the bug can be killed just by soaking it in water or kerosene. The heavy attack can be controlled by spraying organophosphate insecticides.

Leaf Hopper: This pest is found primarily in tropical and subtropical regions. The insect targets the leaf and sucks all the nutrients of the leaf and gets curls at the suggestion. Later, the whole leaf dry and pass away.

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

Mite: Mite likewise assaults the leaf and makes the entire plant weak. The bug presence can be recognized when the leaf become yellowish, shrinks, turns red and drop. The insect can also be spread out through fallen leaves.

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

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

Chrysocoris javanus, Tip borer caterpillar.

Stink Bug: Sting bug is a major bug which assaults the plant during blossom period so the crop yield entirely drops. This pest is seen around the tropical area.

The toxic enzyme in the plant diminishes the entire plant.

Control: Insecticides suggested for this bug is chlorfluazuron, diflubenzuron, alfamethrin, and lamda cyhalothrin.

Tip borer caterpillar: The bugs commonly takes place attacks the plant in blooming season and this bug is seen commonly in tropical areas. The female pest laid the eggs on the tender part of the plant and the young larvae feed the young fruits and plant tips.

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