Jatropha Curcas is gaining value commercially as the need of nonrenewable fuel sources increases greatly and also Jatropha is an environmentally friendly energy plantation. Plantation of this plant is considered to be an excellent fuel substitute and it is also extremely cost-effective compared to other fuels. Recently, Jatropha is facing some difficulty with bugs and illness. The bugs are classified into 2 varieties: 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 pest affects 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 completely.

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

Scarabaeid Beetle: This insect destroys the root of the young plant. Initially, the larva consumes the organic matters 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 pest. For heavy attack, insecticides with parts carbosulfan and carbofuran can be utilized to eliminate the pest.

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

Control: Insecticides are used to control the insects.

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

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

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

Leaf Caterpillar: This bug can consume all the leaves of the plant in short period. The quality and yield of the seeds get decreased due to the heavy attack.

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

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

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 pest is discovered mainly in tropical and subtropical regions. 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 using insecticides like imidachloprid, beta cyfluthrin or carbosulfan.

Mite: Mite likewise attacks the leaf and makes the entire plant weak. The bug existence can be recognized when the leaf become yellowish, shrinks, turns red and fall down. The insect can also be spread through fallen leaves.

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

Some terrible bug which attacks 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 bloom period so the crop yield completely falls down. This pest is seen around the tropical region.

The poisonous enzyme in the plant shrinks the whole plant.

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

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

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