Jatropha jatropha curcas is getting importance commercially as the need of fossil fuels increases greatly and likewise jatropha curcas is an environmentally friendly energy plantation. Plantation of this plant is thought about to be an outstanding fuel replacement and it is likewise very cost-effective compared to other fuels. Recently, Jatropha is dealing with some problem with insects and illness. The insects are classified into 2 ranges: Pest that impact young plants and Pest that impact grown plants.

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

Agrotis ipsilon: It is typically called Cut worm. This pest 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 completely.

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

Scarabaeid Beetle: This insect destroys the root of the young plant. Initially, the larva takes in the raw materials present in the soil and after that comes to the root. The larva attack may kill the whole plant.

Control: The plant with excellent resistance power can get rid of the insect. For heavy attack, insecticides with elements carbosulfan and carbofuran can be used to kill the pest.

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

Control: Insecticides are used to control the insects.

Grasshopper: This prevails insect found in several plants. Valanga nigricornis and Locusta migratoria extensively assaults the plant. The pest 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 bug harms the jatropha curcas stem and it is commonly seen in Indonesia. The stem assaulted by this bug usually drop. The presence can be determined by the larva penetration hole at the stem.

Control: The Insecticide typically used to manage this pest is carbofuran.

Pest of leaf: The common pests observed are leaf caterpillar, Neetle caterpillar, Leaf hopper, Mite, Ear corn caterpillar.

Leaf Caterpillar: This pest can eat 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 picking 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 substance. Initially the pest crowded in the leaf and then spread out all over the plant when it grows older.

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

Leaf Hopper: This bug is discovered primarily in tropical and subtropical areas. The insect targets the leaf and sucks all the nutrients of the leaf and gets curls at the pointer. 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 assaults the leaf and makes the entire plant weak. The pest presence can be identified when the leaf ended up being yellow-colored, diminishes, reddens and fall down. The insect can likewise be spread out through fallen leaves.

Control: Some preventive procedures can be done like correct sanitation and burning the fallen leaves. Heavy attack can be dealt with by spraying insecticides.

Some terrible pest 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 duration so the crop yield entirely falls down. This insect is seen around the tropical area.

The harmful enzyme in the plant shrinks the entire plant.

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

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

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