Jatropha Curcas is gaining significance commercially as the demand of fossil fuels increases significantly and also Jatropha is an environmentally friendly energy plantation. Plantation of this plant is thought about to be an exceptional fuel substitute and it is also really cost-effective compared to other fuels. Recently, Jatropha is dealing with some difficulty with pests and illness. The bugs are classified into 2 ranges: Pest that affect young plants and Pest that impact developed plants.

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

Agrotis ipsilon: It is typically referred to as Cut worm. This insect impacts the seedlings and young jatropha curcas plants. If the plant is impacted by the cutworm, the stem gets cut nearer to the soil surface and this will shrunk the plant entirely.

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

Scarabaeid Beetle: This insect damages the root of the young plant. Initially, the larva consumes the natural matters present in the soil and then concerns the root. The larva attack may kill the entire plant.

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

Army worm: Spodoptera litura existence can be identified by biting in the leaves. The extreme infection might totally eliminate the plants.

Control: Insecticides are utilized to manage the bugs.

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

Control: The Insecticide typically used to control this bug is carbofuran.

Pest of leaf: The common bugs 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 other words period. 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 area and discarding the attacked leaves.

Needle Caterpillar: This caterpillar is covered with spines and produces a burning experience when permitted to exposure to skin as it produces particular chemical substance. Initially the pest crowded in the leaf and after that spread all over the plant when it gets older.

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

Leaf Hopper: This insect is found 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 pass away.

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

Mite: Mite also assaults the leaf and makes the entire plant weak. The bug presence can be recognized 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 done like proper sanitation and burning the fallen leaves. Heavy attack can be treated by spraying insecticides.

Some dreadful insect which attacks flower and fruit are, Stink bug (Nezara viridula)

Chrysocoris javanus, Tip borer caterpillar.

Stink Bug: Sting bug is a severe bug which attacks the plant throughout blossom duration so the crop yield entirely falls down. This bug is seen around the tropical region.

The harmful 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 bugs typically happens attacks the plant in blooming season and this bug is seen commonly 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 tips.

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