1 Pests Of Jatropha
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Jatropha Curcas is acquiring significance commercially as the demand of nonrenewable fuel sources increases enormously and likewise Jatropha is an environmentally friendly energy plantation. Plantation of this plant is considered to be an exceptional fuel replacement and it is likewise very economical compared to other fuels. Recently, Jatropha is dealing with some problem with insects and diseases. The pests are classified into two ranges: Pest that affect young plants and Pest that impact developed plants.

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

Agrotis ipsilon: It is frequently called Cut worm. This pest affects the seedlings and young jatropha curcas plants. If the plant is impacted by the cutworm, the stem gets cut nearer to the soil surface and this will shrunk the plant entirely.

Control: This pest can be controlled by selecting the larva found around the plants or by blending the bran, sawdust with insecticides.

Scarabaeid Beetle: This insect damages the root of the young plant. Initially, the larva takes in the raw materials present in the soil and after that pertains to the root. The larva attack might kill the entire 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 utilized to kill the pest.

Army worm: Spodoptera litura presence can be identified by biting in the leaves. The extreme infection could completely kill the plants.

Control: Insecticides are used 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 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 damages the jatropha curcas stem and it is commonly seen in Indonesia. The stem attacked by this insect usually drop. The existence can be recognized by the larva penetration hole at the stem.

Control: The Insecticide usually used to control this insect is carbofuran.

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

Leaf Caterpillar: This bug can eat 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 picking the old larvae around the surface and throwing away the attacked leaves.

Needle Caterpillar: This caterpillar is covered with spines and produces a burning sensation when permitted to contact with skin as it produces specific chemical substance. Initially the bug crowded in the leaf and then spread 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 managed by spraying organophosphate insecticides.

Leaf Hopper: This bug is discovered mostly in tropical and subtropical regions. The insect targets the leaf and sucks all the nutrients of the leaf and gets curls at the idea. Later, the entire leaf dry and die.

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

Mite: Mite also attacks the leaf and makes the entire plant weak. The insect presence can be determined when the leaf become yellow-colored, shrinks, reddens and fall down. The pest can also be spread out through fallen leaves.

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

Some awful insect 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 blossom duration so the crop yield totally falls down. This bug is seen around the tropical area.

The toxic enzyme in the plant shrinks the entire plant.

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

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

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