Jatropha Curcas is gaining significance commercially as the demand of fossil fuels increases tremendously and also Jatropha is an environment-friendly energy plantation. Plantation of this plant is considered to be an excellent fuel replacement and it is also extremely affordable compared to other fuels. Recently, jatropha curcas is facing some difficulty with bugs and illness. The bugs are categorized into two varieties: Pest that impact young plants and Pest that impact matured plants.

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

Agrotis ipsilon: It is typically called Cut worm. This pest impacts 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 diminished the plant totally.

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

Scarabaeid Beetle: This pest damages the root of the young plant. Initially, the larva consumes the raw materials present in the soil and after that pertains to the root. The larva attack might kill the entire plant.

Control: The plant with great resistance power can conquer the insect. For heavy attack, insecticides with elements carbosulfan and carbofuran can be utilized to kill the insect.

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

Control: Insecticides are utilized to control the bugs.

Grasshopper: This is common bug discovered in several plants. Valanga nigricornis and Locusta migratoria widely assaults the plant. The insect 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 damages the Jatropha stem and it is extensively seen in Indonesia. The stem assaulted by this insect usually drop. The presence can be determined by the larva penetration hole at the stem.

Control: The Insecticide usually utilized to control this insect is carbofuran.

Pest of leaf: The common bugs 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 other words period. The quality and yield of the seeds get lowered due to the heavy attack.

Control: This can be managed by selecting the old larvae around the surface and getting rid of the attacked leaves.

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

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

Leaf Hopper: This pest is discovered 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 the leaf and makes the entire plant weak. The bug existence can be identified when the leaf become yellow-colored, diminishes, reddens and drop. The pest can likewise be spread through fallen leaves.

Control: Some preventive measures can be done like correct 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 major pest which attacks the plant throughout blossom duration so the crop yield totally falls down. This insect is seen around the tropical region.

The toxic enzyme in the plant diminishes the entire plant.

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

Tip borer caterpillar: The pests typically occurs attacks the plant in blooming season and this bug is seen widely 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 suggestions.

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