Jatropha jatropha curcas is getting value commercially as the need of nonrenewable fuel sources increases significantly and also Jatropha is an environment-friendly energy plantation. Plantation of this plant is thought about to be an excellent fuel replacement and it is also really economical compared to other fuels. Recently, jatropha curcas is facing some trouble with pests and illness. The bugs are classified into 2 varieties: Pest that impact young plants and Pest that affect grown plants.

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

Agrotis ipsilon: It is commonly understood as Cut worm. This insect 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 area and this will shrunk the plant completely.

Control: This pest can be controlled by choosing the larva found 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 organic matters present in the soil and after that concerns the root. The larva attack might kill the entire plant.

Control: The plant with excellent resistance power can conquer the bug. For heavy attack, insecticides with elements carbosulfan and carbofuran can be utilized to eliminate the bug.

Army worm: Spodoptera litura presence can be identified by biting in the leaves. The serious infection might the plants.

Control: Insecticides are utilized to control the pests.

Grasshopper: This prevails insect discovered in a number of plants. Valanga nigricornis and Locusta migratoria widely attacks the plant. The pest typically 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 bug damages the Jatropha stem and it is extensively seen in Indonesia. The stem assaulted by this bug typically drop. The existence can be determined by the larva penetration hole at the stem.

Control: The Insecticide generally used to manage this pest 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 brief period. The quality and yield of the seeds get decreased due to the heavy attack.

Control: This can be controlled by picking the old larvae around the surface and discarding the assaulted leaves.

Needle Caterpillar: This caterpillar is covered with spinal columns and produces a burning sensation when allowed to contact with skin as it produces specific chemical compound. Initially the pest crowded in the leaf and after that spread out all over the plant when it ages.

Control: Manually, the pest can be killed just by soaking it in water or kerosene. The heavy attack can be managed by spraying organophosphate insecticides.

Leaf Hopper: This insect 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 suggestion. 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 assaults the leaf and makes the whole plant weak. The pest existence can be determined when the leaf become yellow-colored, diminishes, reddens and fall down. The pest can likewise be spread 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 terrible bug which attacks 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 during blossom duration so the crop yield totally falls down. This pest is seen around the tropical region.

The poisonous enzyme in the plant shrinks the entire plant.

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

Tip borer caterpillar: The bugs commonly takes place 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 suggestions.

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