Jatropha Curcas is acquiring significance commercially as the demand of nonrenewable fuel sources increases tremendously and also jatropha curcas is an environment-friendly energy plantation. Plantation of this plant is thought about to be an exceptional fuel replacement and it is likewise very economical compared to other fuels. Recently, Jatropha is dealing with some difficulty with bugs and diseases. The bugs are categorized into two varieties: Pest that impact young plants and Pest that impact grown plants.

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

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

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

Scarabaeid Beetle: This bug damages the root of the young plant. Initially, the larva consumes the raw materials present in the soil and after that concerns the root. The larva attack may kill the entire plant.

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

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

Control: Insecticides are utilized to control the pests.

Grasshopper: This discovered in numerous plants. Valanga nigricornis and Locusta migratoria widely attacks the plant. The pest typically assaults 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 pest harms the Jatropha stem and it is widely seen in Indonesia. The stem attacked by this insect generally fall down. The existence can be recognized by the larva penetration hole at the stem.

Control: The Insecticide normally used to manage this insect 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 consume all the leaves of the plant in brief duration. The quality and yield of the seeds get decreased due to the heavy attack.

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

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

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

Leaf Hopper: This pest is found primarily in tropical and subtropical areas. The bug targets the leaf and sucks all the nutrients of the leaf and gets curls at the tip. Later, the entire leaf dry and pass away.

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

Mite: Mite likewise attacks the leaf and makes the entire plant weak. The pest presence can be determined when the leaf become yellow-colored, diminishes, reddens and fall down. The pest can also be spread out through fallen leaves.

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

Some terrible insect 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 throughout bloom duration so the crop yield entirely drops. This bug is seen around the tropical area.

The poisonous enzyme in the plant diminishes the whole plant.

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

Tip borer caterpillar: The insects frequently happens attacks the plant in flowering season and this bug is seen commonly in tropical regions. 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 suggested to burn. The insecticides like monocrotophos and bensultap are sprayed at the blooming season.