Jatropha Curcas is gaining importance commercially as the demand of fossil fuels increases greatly and likewise Jatropha is an environmentally friendly energy plantation. Plantation of this plant is thought about to be an outstanding fuel alternative and it is also very affordable compared to other fuels. Recently, jatropha curcas is dealing with some problem with pests and illness. The insects are classified into two ranges: Pest that affect young plants and Pest that impact developed plants.

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

Agrotis ipsilon: It is commonly called Cut worm. This pest impacts the seedlings and young jatropha curcas plants. If the plant is impacted by the cutworm, the stem gets cut nearer to the soil surface and this will shrunk the plant totally.

Control: This bug can be managed by picking the larva discovered around the plants or by mixing the bran, sawdust with insecticides.

Scarabaeid Beetle: This bug destroys the root of the young plant. Initially, the larva consumes the raw materials present in the soil and then comes to the root. The larva attack might kill the entire plant.

Control: The plant with good resistance power can get rid of the pest. For heavy attack, insecticides with components carbosulfan and carbofuran can be used to kill the bug.

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

Control: Insecticides are used to control the pests.

Grasshopper: This is typical bug discovered in a number of plants. Valanga nigricornis and Locusta migratoria commonly attacks the plant. The pest often attacks 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 pest damages the Jatropha stem and it is commonly seen in Indonesia. The stem attacked by this insect typically drop. The presence can be determined by the larva penetration hole at the stem.

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

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

Leaf Caterpillar: This bug can eat all the leaves of the plant simply put duration. The quality and yield of the seeds get lowered due to the heavy attack.

Control: This can be controlled by selecting the old larvae around the surface and getting rid of the assaulted leaves.

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

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

Leaf Hopper: This pest is found mostly in tropical and subtropical regions. The insect targets the leaf and draws all the nutrients of the leaf and gets curls at the pointer. Later, the entire leaf dry and pass away.

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

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

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

Some terrible 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 throughout bloom duration so the crop yield completely drops. This insect is seen around the tropical area.

The hazardous enzyme in the plant diminishes the entire plant.

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

Tip borer caterpillar: The bugs frequently occurs attacks the plant in flowering season and this insect is seen extensively 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 pointers.

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