Jatropha Curcas is acquiring importance commercially as the need of nonrenewable fuel sources increases enormously and likewise Jatropha is an eco-friendly energy plantation. Plantation of this plant is thought about to be an excellent fuel substitute and it is likewise really economical compared to other fuels. Recently, jatropha curcas is dealing with some problem with insects and diseases. The bugs are categorized into 2 ranges: Pest that affect young plants and Pest that affect developed plants.

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

Agrotis ipsilon: It is typically called Cut worm. This pest impacts 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 completely.

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

Scarabaeid Beetle: This pest destroys the root of the young plant. Initially, the larva takes in the organic matters present in the soil and after that comes to the root. The larva attack might eliminate the whole plant.

Control: The plant with good resistance power can conquer the bug. For heavy attack, insecticides with elements carbosulfan and carbofuran can be used to kill the bug.

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

Control: Insecticides are utilized to manage the insects.

Grasshopper: This is common pest discovered in several plants. Valanga nigricornis and Locusta migratoria commonly attacks the plant. The bug frequently 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 bug damages the Jatropha stem and it is widely seen in Indonesia. The stem attacked by this bug typically drop. The presence can be determined by the larva penetration hole at the stem.

Control: The Insecticide usually 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 consume all the leaves of the plant simply put duration. The quality and yield of the seeds get reduced due to the heavy attack.

Control: This can be managed by picking 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 permitted to exposure to skin as it produces certain chemical substance. Initially the insect crowded in the leaf and then spread out all over the plant when it gets older.

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

Leaf Hopper: This pest is found mainly in tropical and subtropical areas. The insect targets the leaf and draws all the nutrients of the leaf and gets curls at the tip. Later, the whole 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 insect existence can be determined when the leaf become yellow-colored, shrinks, reddens and fall down. The insect can also be spread through fallen leaves.

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

Some terrible insect which assaults flower and fruit are, Stink bug (Nezara viridula)

Chrysocoris javanus, Tip borer caterpillar.

Stink Bug: Sting bug is a serious insect which assaults the plant throughout bloom period so the crop yield completely falls down. This pest 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 insects frequently occurs attacks the plant in and this insect is seen widely in tropical regions. The female insect laid the eggs on the tender part of the plant and the young larvae feed the young fruits and plant ideas.

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