Jatropha jatropha curcas is gaining significance commercially as the need of nonrenewable fuel sources increases significantly and likewise jatropha curcas is an environmentally friendly energy plantation. Plantation of this plant is considered to be an exceptional fuel alternative and it is also extremely economical compared to other fuels. Recently, Jatropha is facing some trouble with pests and diseases. The bugs are classified into two varieties: Pest that affect young plants and Pest that impact matured plants.

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

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

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

Scarabaeid Beetle: This insect damages the root of the young plant. Initially, the larva takes in the natural 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 get rid of the pest. For heavy attack, insecticides with elements carbosulfan and carbofuran can be used to kill the pest.

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

Control: Insecticides are utilized to manage the pests.

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

Control: The Insecticide usually used to control 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 insect can eat all the leaves of the plant in short duration. The quality and yield of the seeds get lowered due to the heavy attack.

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

Needle Caterpillar: This caterpillar is covered with spines and produces a burning sensation when permitted to contact with skin as it produces certain chemical compound. Initially the pest crowded in the leaf and then spread all over the plant when it grows 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 bug is found primarily in tropical and subtropical areas. The insect targets the leaf and sucks all the nutrients of the leaf and gets curls at the idea. 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 attacks the leaf and makes the entire plant weak. The bug presence can be identified when the leaf become yellow-colored, diminishes, reddens and fall down. The pest can likewise be spread out through fallen leaves.

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

Some terrible insect which assaults flower and fruit are, Stink bug (Nezara viridula)

Chrysocoris javanus, Tip borer caterpillar.

Stink Bug: Sting bug is a serious pest which assaults the plant during bloom duration so the crop yield totally drops. This bug is seen around the tropical area.

The harmful enzyme in the plant diminishes the whole plant.

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

Tip borer caterpillar: The insects frequently takes place attacks the plant in blooming season and this insect 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 tips.

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