pt-sinergi-oleo-nusantara

Jatropha Curcas is getting importance commercially as the need of fossil fuels increases enormously and likewise Jatropha is an environmentally friendly energy plantation. Plantation of this plant is thought about to be an exceptional fuel replacement and it is likewise very economical compared to other fuels. Recently, Jatropha is facing some difficulty with bugs and diseases. The bugs are classified into 2 varieties: Pest that affect young plants and Pest that impact matured plants.

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

Agrotis ipsilon: It is frequently understood as Cut worm. This pest affects the seedlings and young Jatropha plants. If the plant is affected by the cutworm, the stem gets cut nearer to the soil surface and this will shrunk the plant completely.

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 consumes the raw materials present in the soil and then comes to the root. The larva attack might kill the entire plant.

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

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

Control: Insecticides are used to manage the bugs.

Grasshopper: This is common pest discovered in a number of plants. Valanga nigricornis and Locusta migratoria commonly assaults the plant. The bug typically 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 bug harms the Jatropha stem and it is commonly seen in Indonesia. The stem assaulted by this pest usually fall down. The presence can be identified by the larva penetration hole at the stem.

Control: The Insecticide usually utilized to manage this pest is carbofuran.

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

Leaf Caterpillar: This insect can consume all the leaves of the plant simply put duration. The quality and yield of the seeds get reduced due to the heavy attack.

Control: This can be managed by selecting the old larvae around the surface area and getting rid of the attacked leaves.

Needle Caterpillar: This caterpillar is covered with spinal columns and produces a burning sensation when allowed to exposure to skin as it produces specific chemical substance. Initially the insect crowded in the leaf and after that spread all over the plant when it ages.

Control: Manually, the pest can be killed just 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 sucks all the nutrients of the leaf and gets curls at the pointer. Later, the whole 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 yellowish, shrinks, turns red and fall down. The insect can also be spread out through fallen leaves.

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

Some awful pest which assaults flower and fruit are, Stink bug (Nezara viridula)

Chrysocoris javanus, Tip borer caterpillar.

Stink Bug: Sting bug is a major pest which attacks the plant throughout blossom 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 suggested for this insect is chlorfluazuron, diflubenzuron, alfamethrin, and lamda cyhalothrin.

Tip borer caterpillar: The insects typically happens attacks the plant in flowering season and this pest is seen extensively in tropical regions. The female bug 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 to burn. The insecticides like monocrotophos and bensultap are sprayed at the flowering season.