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<br>Jatropha Curcas is getting importance commercially as the demand of nonrenewable fuel sources increases tremendously and also Jatropha is an environmentally friendly energy plantation. Plantation of this plant is considered to be an exceptional fuel substitute and it is also extremely cost-effective compared to other fuels. Recently, Jatropha is dealing with some difficulty with pests and diseases. The insects are classified into two varieties: Pest that affect young plants and Pest that affect matured plants.<br>
<br>Young plant insects: Cutworm, Scarabeid Beetle, Army worm, Grasshopper.<br>
<br>Agrotis ipsilon: It is frequently referred to as 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 area and this will diminished the plant entirely.<br>
<br>Control: This pest can be controlled by picking the larva discovered around the plants or by blending the bran, sawdust with insecticides.<br>
<br>Scarabaeid Beetle: This bug ruins the root of the young plant. Initially, the larva takes in the natural matters present in the soil and then pertains to the root. The larva attack might eliminate the entire plant.<br>
<br>Control: The plant with excellent resistance power can overcome the pest. For heavy attack, insecticides with elements carbosulfan and carbofuran can be utilized to eliminate the insect.<br>
<br>Army worm: Spodoptera litura presence can be recognized by biting in the leaves. The extreme infection could entirely eliminate the plants.<br>
<br>Control: Insecticides are utilized to control the insects.<br>
<br>Grasshopper: This is typical pest discovered in several plants. Valanga nigricornis and Locusta migratoria commonly assaults the plant. The pest frequently assaults the young plant.<br>
<br>Control: The insecticides used betacyfluthrin, cypermethrin, thiodicarb, MIPC, and fipronil.<br>
<br>Pest observed in mature plants:<br>
<br>Pest of Stem: Ostrinia furnacalis, Xyleborus spp.<br>
<br>Ostrinia furnacalis and Xyleborus: This insect harms the Jatropha stem and it is extensively seen in Indonesia. The stem assaulted by this insect usually fall down. The presence can be determined by the larva penetration hole at the stem.<br>
<br>Control: The Insecticide typically utilized to control this insect is carbofuran.<br>
<br>Pest of leaf: The typical insects are leaf caterpillar, Neetle caterpillar, Leaf hopper, Mite, Ear corn caterpillar.<br>
<br>Leaf Caterpillar: This insect can consume all the leaves of the plant in brief period. The quality and yield of the seeds get decreased due to the heavy attack.<br>
<br>Control: This can be managed by choosing the old larvae around the surface area and getting rid of the attacked leaves.<br>
<br>Needle Caterpillar: This caterpillar is covered with spines and produces a burning feeling when enabled to call with skin as it produces particular chemical substance. Initially the insect crowded in the leaf and after that spread all over the plant when it grows older.<br>
<br>Control: Manually, the pest can be eliminated just by soaking it in water or kerosene. The heavy attack can be controlled by spraying organophosphate insecticides.<br>
<br>Leaf Hopper: This bug is discovered mainly in tropical and subtropical regions. The bug targets the leaf and draws all the nutrients of the leaf and gets curls at the suggestion. Later, the whole leaf dry and die.<br>
<br>Control: The heavy attack can be controlled by utilizing insecticides like imidachloprid, beta cyfluthrin or carbosulfan.<br>
<br>Mite: Mite also assaults the leaf and makes the entire plant weak. The insect presence can be determined when the leaf ended up being yellow-colored, shrinks, reddens and drop. The pest can also be spread through fallen leaves.<br>
<br>Control: Some preventive procedures can be simulated correct sanitation and burning the fallen leaves. Heavy attack can be dealt with by spraying insecticides.<br>
<br>Some terrible insect which assaults flower and fruit are, Stink bug (Nezara viridula)<br>
<br>Chrysocoris javanus, Tip borer caterpillar.<br>
<br>Stink Bug: Sting bug is a major bug which assaults the plant during bloom period so the crop yield completely falls down. This bug is seen around the tropical area.<br>
<br>The toxic enzyme in the plant diminishes the entire plant.<br>
<br>Control: Insecticides recommended for this pest is chlorfluazuron, diflubenzuron, alfamethrin, and lamda cyhalothrin.<br>
<br>Tip borer caterpillar: The bugs commonly takes place attacks the plant in blooming season and this pest is seen extensively 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 suggestions.<br>
<br>Control: Manually, the attacked seeds are suggested to burn. The insecticides like monocrotophos and bensultap are sprayed at the flowering season.<br>