Jatropha jatropha curcas is gaining importance commercially as the need of nonrenewable fuel sources increases greatly and likewise Jatropha is an environmentally friendly energy plantation. Plantation of this plant is thought about to be an outstanding fuel substitute and it is likewise extremely affordable compared to other fuels. Recently, jatropha curcas is facing some problem with bugs and diseases. The insects are categorized into two ranges: Pest that affect young plants and Pest that affect grown plants.

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

Agrotis ipsilon: It is frequently understood as 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 shrunk the plant entirely.

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

Scarabaeid Beetle: This insect ruins the root of the young plant. Initially, the larva consumes the raw materials present in the soil and after that comes to the root. The larva attack might eliminate the entire plant.

Control: The plant with great resistance power can get rid of the pest. For heavy attack, insecticides with elements carbosulfan and carbofuran can be utilized to kill the insect.

Army worm: Spodoptera litura presence can be determined by biting in the leaves. The severe infection might totally eliminate the plants.

Control: Insecticides are utilized to control the pests.

Grasshopper: This is typical insect discovered in a number of plants. Valanga nigricornis and Locusta migratoria extensively attacks the plant. The insect often assaults the young plant.

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

Pest observed in fully grown plants:

Pest of Stem: Ostrinia furnacalis, Xyleborus spp.

Ostrinia furnacalis and Xyleborus: This insect harms the Jatropha stem and it is widely seen in Indonesia. The stem assaulted by this insect usually fall down. The existence can be recognized by the larva penetration hole at the stem.

Control: The Insecticide typically used to control this insect is carbofuran.

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

Leaf Caterpillar: This bug can consume all the leaves of the plant in short 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 and throwing away the assaulted leaves.

Needle Caterpillar: This is covered with spines and produces a burning sensation when enabled to exposure to skin as it produces certain chemical substance. Initially the pest crowded in the leaf and after that spread all over the plant when it gets older.

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

Leaf Hopper: This insect 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 controlled by utilizing insecticides like imidachloprid, beta cyfluthrin or carbosulfan.

Mite: Mite likewise attacks the leaf and makes the entire plant weak. The insect presence can be identified when the leaf ended up being yellow-colored, shrinks, turns red and drop. The bug can likewise be spread through fallen leaves.

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

Some dreadful pest which assaults flower and fruit are, Stink bug (Nezara viridula)

Chrysocoris javanus, Tip borer caterpillar.

Stink Bug: Sting bug is a severe insect which attacks the plant during bloom period so the crop yield entirely drops. This insect is seen around the tropical area.

The poisonous 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 insects frequently takes place attacks the plant in flowering season and this pest 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 ideas.

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