Jatropha Curcas is gaining value commercially as the need of nonrenewable fuel sources increases tremendously and also Jatropha is an environmentally friendly energy plantation. Plantation of this plant is considered to be an excellent fuel replacement and it is also extremely affordable compared to other fuels. Recently, Jatropha is dealing with some problem with bugs and diseases. The insects are categorized into 2 ranges: Pest that impact young plants and Pest that affect matured plants.

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

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

Control: This bug can be controlled by selecting 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 takes in the natural matters present in the soil and then pertains to the root. The larva attack might eliminate the entire plant.

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

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

Control: Insecticides are utilized to manage the pests.

Grasshopper: This is typical pest discovered in several plants. Valanga nigricornis and Locusta migratoria widely assaults the plant. The bug 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 bug harms the jatropha curcas stem and it is commonly seen in Indonesia. The stem attacked by this insect normally drop. The existence can be recognized by the larva penetration hole at the stem.

Control: The Insecticide generally utilized to control this pest is carbofuran.

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

Leaf Caterpillar: This pest can eat 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 attacked leaves.

Needle Caterpillar: This caterpillar is covered with spines and produces a burning sensation when allowed to exposure to skin as it produces certain chemical compound. Initially the bug crowded in the leaf and then spread all over the plant when it ages.

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

Leaf Hopper: This pest is found mainly in tropical and subtropical regions. The pest targets the leaf and sucks all the nutrients of the leaf and gets curls at the tip. Later, the entire 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 existence can be identified when the leaf become yellowish, diminishes, reddens and drop. The insect can also be spread through fallen leaves.

Control: Some preventive steps can be done like proper sanitation and burning the fallen leaves. Heavy attack can be dealt with 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 severe bug which assaults the plant throughout bloom duration so the crop yield totally falls down. This bug is seen around the tropical area.

The poisonous 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 frequently occurs attacks the plant in blooming season and this pest is seen commonly in tropical areas. The female insect 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.