Jatropha jatropha curcas is acquiring significance commercially as the demand of nonrenewable fuel sources increases significantly and likewise jatropha curcas is an eco-friendly energy plantation. Plantation of this plant is considered to be an excellent fuel substitute and it is also very economical compared to other fuels. Recently, jatropha curcas is facing some problem with insects and diseases. The insects are classified into two ranges: Pest that impact young plants and Pest that impact developed plants.

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

Agrotis ipsilon: It is frequently known as Cut worm. This pest affects the seedlings and young Jatropha plants. If the plant is affected by the cutworm, the stem gets cut nearer to the soil surface area and this will shrunk the plant completely.

Control: This insect can be controlled by selecting the larva found around the plants or by mixing the bran, sawdust with insecticides.

Scarabaeid Beetle: This pest damages 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 great resistance power can conquer the pest. For heavy attack, insecticides with components carbosulfan and carbofuran can be used to eliminate the bug.

Army worm: Spodoptera litura existence can be identified by biting in the leaves. The severe infection might completely 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 widely attacks the plant. The bug often attacks 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 commonly seen in Indonesia. The stem attacked by this pest generally fall down. The presence can be identified by the larva penetration hole at the stem.

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

Pest of leaf: The common insects 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 period. The quality and yield of the seeds get reduced due to the heavy attack.

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

Needle Caterpillar: This caterpillar is covered with spines and produces a burning feeling when permitted to exposure to 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 gets older.

Control: Manually, the bug 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 primarily in tropical and subtropical areas. The bug targets the leaf and draws all the nutrients of the leaf and gets curls at the suggestion. Later, the whole leaf dry and die.

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 whole plant weak. The pest existence can be identified when the leaf become yellowish, diminishes, reddens and drop. The pest can likewise be spread out through fallen leaves.

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

Some dreadful insect which attacks flower and fruit are, Stink bug (Nezara viridula)

Chrysocoris javanus, Tip borer caterpillar.

Stink Bug: Sting bug is a major pest which attacks the plant throughout blossom duration so the crop yield entirely falls down. This pest is seen around the tropical area.

The toxic enzyme in the plant shrinks the entire plant.

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

Tip borer caterpillar: The pests typically happens attacks the plant in flowering season and this bug is seen extensively in tropical regions. The female bug laid the eggs on the tender part of the plant and the young larvae feed the young fruits and plant tips.

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