Jatropha Curcas is getting significance 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 excellent fuel replacement and it is also very cost-effective compared to other fuels. Recently, jatropha curcas is dealing with some difficulty with insects and illness. The pests are classified into two ranges: Pest that affect young plants and Pest that impact developed plants.

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

Agrotis ipsilon: It is frequently called Cut worm. This insect 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 controlled by choosing 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 consumes the natural matters present in the soil and then comes to the root. The larva attack might eliminate the whole plant.

Control: The plant with great resistance power can overcome the insect. For heavy attack, insecticides with components carbosulfan and carbofuran can be utilized to eliminate the insect.

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

Control: Insecticides are utilized to manage the pests.

Grasshopper: This prevails insect discovered in a number of plants. Valanga nigricornis and Locusta migratoria extensively attacks the plant. The insect typically assaults the young plant.

Control: The insecticides utilized betacyfluthrin, cypermethrin, thiodicarb, MIPC, and fipronil.

Pest observed in mature plants:

Pest of Stem: Ostrinia furnacalis, Xyleborus spp.

Ostrinia furnacalis and Xyleborus: This insect harms the Jatropha stem and it is widely seen in Indonesia. The stem assaulted by this insect generally drop. The existence can be identified by the larva penetration hole at the stem.

Control: The Insecticide usually used to manage this bug is carbofuran.

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

Leaf Caterpillar: This insect can consume all the leaves of the plant in other words duration. The quality and yield of the seeds get decreased due to the heavy attack.

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

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

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

Leaf Hopper: This insect is found mainly in tropical and subtropical areas. The insect targets the leaf and draws all the nutrients of the leaf and gets curls at the suggestion. Later, the entire leaf dry and die.

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

Mite: Mite also assaults the leaf and makes the whole plant weak. The bug presence can be determined when the leaf ended up being yellowish, diminishes, reddens and drop. The insect can likewise be spread out through fallen leaves.

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

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

Chrysocoris javanus, Tip borer caterpillar.

Stink Bug: Sting bug is a severe pest which attacks the plant throughout blossom period so the crop yield totally drops. This pest is seen around the tropical region.

The hazardous enzyme in the plant diminishes the entire plant.

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

Tip borer caterpillar: The pests frequently takes place attacks the plant in blooming season and this bug is seen commonly in tropical areas. 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 attacked seeds are recommended to burn. The insecticides like monocrotophos and bensultap are sprayed at the blooming season.