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Jatropha Curcas is acquiring importance commercially as the need of fossil fuels increases enormously and also jatropha curcas is an environmentally friendly energy plantation. Plantation of this plant is considered to be an exceptional fuel replacement and it is also extremely economical compared to other fuels. Recently, jatropha curcas is facing some difficulty with bugs and diseases. The bugs are classified 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 called 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 and this will diminished the plant completely.

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

Scarabaeid Beetle: This bug ruins the root of the young plant. Initially, the larva takes in the raw materials present in the soil and then pertains to the root. The larva attack may kill the whole plant.

Control: The plant with excellent resistance power can overcome 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 recognized by biting in the leaves. The severe infection might entirely eliminate the plants.

Control: Insecticides are used to control the pests.

Grasshopper: This prevails pest found in numerous plants. Valanga nigricornis and Locusta migratoria extensively assaults the plant. The insect often 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 bug harms the Jatropha stem and it is widely seen in . The stem assaulted by this pest generally fall down. The presence can be determined by the larva penetration hole at the stem.

Control: The Insecticide generally utilized to control this pest is carbofuran.

Pest of leaf: The typical pests 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 minimized due to the heavy attack.

Control: This can be controlled by selecting the old larvae around the surface and throwing away the assaulted leaves.

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

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

Leaf Hopper: This insect is discovered primarily in tropical and subtropical areas. The pest 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 controlled by utilizing insecticides like imidachloprid, beta cyfluthrin or carbosulfan.

Mite: Mite also assaults the leaf and makes the entire plant weak. The pest presence can be recognized when the leaf ended up being yellow-colored, diminishes, turns red and drop. The pest can likewise be spread out through fallen leaves.

Control: Some preventive steps can be simulated appropriate 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 severe insect which attacks the plant throughout blossom period so the crop yield completely falls down. This bug is seen around the tropical area.

The harmful enzyme in the plant diminishes the whole plant.

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

Tip borer caterpillar: The pests commonly occurs attacks the plant in flowering season and this pest is seen commonly in tropical areas. 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 flowering season.