Jatropha Curcas is gaining significance commercially as the need of fossil fuels increases significantly and likewise jatropha curcas is an environmentally friendly energy plantation. Plantation of this plant is considered to be an exceptional fuel substitute and it is also very economical compared to other fuels. Recently, jatropha curcas is facing some difficulty with bugs and diseases. The insects are classified into 2 varieties: Pest that affect young plants and Pest that affect matured plants.

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

Agrotis ipsilon: It is frequently called Cut worm. This insect 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 and this will diminished the plant entirely.

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

Scarabaeid Beetle: This bug destroys the root of the young plant. Initially, the larva takes in the organic matters present in the soil and after that comes to the root. The larva attack might eliminate the whole plant.

Control: The plant with excellent resistance power can overcome the insect. For heavy attack, insecticides with parts carbosulfan and carbofuran can be used to eliminate the pest.

Army worm: Spodoptera litura presence can be identified by biting in the leaves. The serious infection might entirely kill the plants.

Control: Insecticides are used to manage the bugs.

Grasshopper: This is common pest found in a number of plants. Valanga nigricornis and Locusta migratoria extensively assaults the plant. The bug typically assaults the young plant.

Control: The insecticides used 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 curcas stem and it is widely seen in Indonesia. The stem assaulted by this bug generally fall down. The presence can be recognized by the larva penetration hole at the stem.

Control: The Insecticide generally utilized to manage this bug is carbofuran.

Pest of leaf: The common pests 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 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 area and discarding the assaulted leaves.

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

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

Leaf Hopper: This insect is found mostly in tropical and subtropical regions. The insect targets the leaf and draws 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 attacks the leaf and makes the entire plant weak. The bug presence can be recognized when the leaf ended up being yellow-colored, shrinks, turns red and fall down. The pest can also be spread through fallen leaves.

Control: Some preventive procedures can be simulated proper and burning the fallen leaves. Heavy attack can be treated by spraying insecticides.

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

Chrysocoris javanus, Tip borer caterpillar.

Stink Bug: Sting bug is a major bug which attacks the plant during bloom period so the crop yield totally drops. This bug is seen around the tropical region.

The harmful enzyme in the plant shrinks the whole plant.

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

Tip borer caterpillar: The pests typically occurs attacks the plant in flowering season and this insect is seen widely in tropical areas. The female pest laid the eggs on the tender part of the plant and the young larvae feed the young fruits and plant pointers.

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