Jatropha Curcas is getting significance commercially as the need of fossil fuels increases enormously and likewise Jatropha is an environment-friendly energy plantation. Plantation of this plant is thought about to be an excellent fuel alternative and it is likewise very economical compared to other fuels. Recently, Jatropha is facing some difficulty with pests and diseases. The pests are categorized into 2 ranges: Pest that affect young plants and Pest that affect matured plants.

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

Agrotis ipsilon: It is typically referred to as Cut worm. This insect impacts the seedlings and young Jatropha plants. If the plant is impacted by the cutworm, the stem gets cut nearer to the soil surface area and this will shrunk the plant entirely.

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

Scarabaeid Beetle: This the root of the young plant. Initially, the larva takes in 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 overcome the insect. For heavy attack, insecticides with parts carbosulfan and carbofuran can be used to eliminate the insect.

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

Control: Insecticides are utilized to manage the pests.

Grasshopper: This prevails bug discovered in several plants. Valanga nigricornis and Locusta migratoria widely assaults the plant. The insect frequently 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 insect damages the Jatropha stem and it is widely 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 used to control this bug is carbofuran.

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

Leaf Caterpillar: This bug can eat 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 selecting the old larvae around the surface and discarding the assaulted leaves.

Needle Caterpillar: This caterpillar is covered with spines and produces a burning feeling when enabled to exposure to skin as it produces specific chemical compound. Initially the bug crowded in the leaf and after that spread out all over the plant when it gets older.

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

Leaf Hopper: This pest is discovered mainly in tropical and subtropical regions. The bug targets the leaf and draws all the nutrients of the leaf and gets curls at the tip. Later, the entire leaf dry and die.

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

Mite: Mite also assaults the leaf and makes the entire plant weak. The bug presence can be identified when the leaf become yellow-colored, shrinks, turns red and drop. The pest can also be spread out through fallen leaves.

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

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

Chrysocoris javanus, Tip borer caterpillar.

Stink Bug: Sting bug is a serious bug which assaults the plant during blossom duration so the crop yield totally falls down. This insect is seen around the tropical region.

The toxic enzyme in the plant shrinks the whole plant.

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

Tip borer caterpillar: The bugs frequently takes place attacks the plant in flowering season and this bug is seen commonly in tropical regions. 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 assaulted seeds are recommended to burn. The insecticides like monocrotophos and bensultap are sprayed at the blooming season.