pt-sinergi-oleo-nusantara

Jatropha Curcas is acquiring value commercially as the need of nonrenewable fuel sources increases greatly and also Jatropha is an environment-friendly energy plantation. Plantation of this plant is considered to be an outstanding fuel substitute and it is also really cost-effective compared to other fuels. Recently, jatropha curcas is dealing with some trouble with insects and diseases. The insects are categorized into two varieties: Pest that affect young plants and Pest that impact grown plants.

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

Agrotis ipsilon: It is frequently referred to as Cut worm. This insect affects 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 shrunk the plant entirely.

Control: This insect can be managed by choosing 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 consumes the raw materials present in the soil and after that pertains to the root. The larva attack may eliminate the entire plant.

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

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

Control: Insecticides are utilized to control the pests.

Grasshopper: This prevails bug discovered in numerous plants. Valanga nigricornis and Locusta migratoria widely attacks the plant. The insect often assaults 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 widely seen in Indonesia. The stem assaulted by this bug typically fall down. The presence can be recognized by the larva penetration hole at the stem.

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

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

Leaf Caterpillar: This bug can consume all the leaves of the plant in other words period. The quality and yield of the seeds get reduced due to the heavy attack.

Control: This can be controlled by picking the old larvae around the surface area and discarding the attacked leaves.

Needle Caterpillar: This caterpillar is covered with spines and produces a burning experience when enabled to contact with skin as it produces particular chemical compound. Initially the insect crowded in the leaf and then spread all over the plant when it gets older.

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 insect is found mostly in tropical and subtropical areas. 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 pass away.

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

Mite: Mite likewise attacks the leaf and makes the entire plant weak. The insect existence can be determined when the leaf ended up being yellowish, diminishes, reddens and drop. The insect can likewise be spread out through fallen leaves.

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

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

Chrysocoris javanus, Tip borer caterpillar.

Stink Bug: Sting bug is a severe insect which attacks the plant throughout blossom duration so the crop yield totally falls down. This insect is seen around the tropical area.

The harmful enzyme in the plant diminishes the entire plant.

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

Tip borer caterpillar: The bugs frequently occurs attacks the plant in blooming season and this bug 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 tips.

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