Pests Of Jatropha

Jatropha Curcas is gaining importance commercially as the demand of fossil fuels increases tremendously and likewise Jatropha is an eco-friendly energy plantation. Plantation of this plant is considered to be an excellent fuel substitute and it is also extremely economical to other fuels. Recently, Jatropha is facing some difficulty with pests and illness. The bugs are classified into 2 varieties: Pest that impact young plants and Pest that affect grown plants.

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

Agrotis ipsilon: It is typically understood as Cut worm. This insect impacts the seedlings and young Jatropha plants. If the plant is impacted by the cutworm, the stem gets cut nearer to the soil surface area and this will shrunk the plant entirely.

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

Scarabaeid Beetle: This pest ruins the root of the young plant. Initially, the larva takes in the raw materials present in the soil and after that concerns the root. The larva attack might eliminate the entire plant.

Control: The plant with good resistance power can overcome the pest. For heavy attack, insecticides with components carbosulfan and carbofuran can be used to kill the bug.

Army worm: Spodoptera litura presence can be recognized by biting in the leaves. The extreme infection might totally eliminate the plants.

Control: Insecticides are used to manage the pests.

Grasshopper: This is common pest found in a number of plants. Valanga nigricornis and Locusta migratoria widely attacks the plant. The pest frequently attacks 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 pest harms the Jatropha stem and it is commonly seen in Indonesia. The stem assaulted by this bug generally drop. The presence can be recognized by the larva penetration hole at the stem.

Control: The Insecticide generally used to control this pest is carbofuran.

Pest of leaf: The common 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 simply put period. The quality and yield of the seeds get lowered due to the heavy attack.

Control: This can be managed by picking the old larvae around the surface and discarding the assaulted leaves.

Needle Caterpillar: This caterpillar is covered with spinal columns and produces a burning feeling when allowed to exposure to skin as it produces particular chemical substance. Initially the bug crowded in the leaf and then spread all over the plant when it gets older.

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 primarily in tropical and subtropical areas. The bug targets the leaf and draws all the nutrients of the leaf and gets curls at the pointer. Later, the entire leaf dry and die.

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

Mite: Mite likewise assaults the leaf and makes the entire plant weak. The bug presence can be determined when the leaf become yellow-colored, diminishes, turns red and fall down. The pest can likewise be spread out through fallen leaves.

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

Some dreadful pest which attacks flower and fruit are, Stink bug (Nezara viridula)

Chrysocoris javanus, Tip borer caterpillar.

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

The harmful enzyme in the plant shrinks the whole plant.

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

Tip borer caterpillar: The insects commonly happens attacks the plant in blooming season and this pest is seen extensively 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 tips.

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