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Jatropha Curcas is gaining significance commercially as the need of fossil fuels increases significantly and also jatropha curcas is an environment-friendly energy plantation. Plantation of this plant is thought about to be an outstanding fuel replacement and it is also extremely affordable compared to other fuels. Recently, Jatropha is dealing with some difficulty with bugs and illness. The insects are classified into two varieties: Pest that affect young plants and Pest that impact matured plants.

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

Agrotis ipsilon: It is frequently called 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 shrunk the plant entirely.

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

Scarabaeid Beetle: This bug damages the root of the young plant. Initially, the larva takes in the natural matters present in the soil and then comes to the root. The larva attack might kill the entire plant.

Control: The plant with excellent resistance power can get rid of the bug. 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 extreme infection might entirely eliminate the plants.

Control: Insecticides are utilized to manage the insects.

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

Control: The insecticides used 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 stem and it is extensively seen in Indonesia. The stem attacked by this bug normally fall down. The existence can be identified by the larva penetration hole at the stem.

Control: The Insecticide generally used to control this bug 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 minimized due to the heavy attack.

Control: This can be controlled by picking the old larvae around the surface area and discarding the attacked leaves.

Needle Caterpillar: This caterpillar is covered with spines and produces a burning experience when allowed to contact with skin as it produces particular chemical compound. Initially the bug crowded in the leaf and then spread all over the plant when it gets older.

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

Leaf Hopper: This bug is found primarily in tropical and subtropical areas. The insect targets the leaf and sucks all the nutrients of the leaf and gets curls at the suggestion. 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 likewise assaults the leaf and makes the entire plant weak. The bug existence can be determined when the leaf become yellow-colored, diminishes, reddens and drop. The insect can likewise be spread through fallen leaves.

Control: Some preventive procedures can be simulated correct sanitation and burning the fallen leaves. Heavy attack can be dealt with by spraying insecticides.

Some dreadful bug 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 during blossom duration so the crop yield completely drops. This bug is seen around the tropical area.

The toxic enzyme in the plant diminishes the entire plant.

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

Tip borer caterpillar: The bugs frequently happens attacks the plant in blooming season and this insect is seen widely in tropical regions. The laid the eggs on the tender part of the plant and the young larvae feed the young fruits and plant suggestions.

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