PT Sinergi Oleo Nusantara
Pests Of Jatropha
Jatropha Curcas is acquiring significance commercially as the need of nonrenewable fuel sources increases significantly and likewise Jatropha is an eco-friendly energy plantation. Plantation of this plant is thought about to be an excellent fuel substitute and it is also extremely affordable compared to other fuels. Recently, Jatropha is facing some trouble with bugs and diseases. The bugs are categorized into two ranges: Pest that impact young plants and Pest that affect matured plants.
Young plant pests: Cutworm, Scarabeid Beetle, Army worm, Grasshopper.
Agrotis ipsilon: It is commonly known as Cut worm. This bug impacts 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 shrunk the plant completely.
Control: This bug can be controlled by choosing the larva discovered around the plants or by blending the bran, sawdust with insecticides.
Scarabaeid Beetle: This pest damages the root of the young plant. Initially, the larva consumes the natural matters present in the soil and after that comes to the root. The larva attack might kill the entire plant.
Control: The plant with good resistance power can overcome the bug. For heavy attack, insecticides with parts carbosulfan and carbofuran can be used to kill the bug.
Army worm: Spodoptera litura existence can be recognized by biting in the leaves. The extreme infection could totally eliminate the plants.
Control: Insecticides are utilized to manage the pests.
Grasshopper: This prevails insect found in numerous plants. Valanga nigricornis and Locusta migratoria commonly attacks the plant. The pest 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 harms the Jatropha stem and it is commonly seen in Indonesia. The stem assaulted by this insect normally drop. The presence can be recognized by the larva penetration hole at the stem.
Control: The Insecticide usually used to manage this insect is carbofuran.
Pest of leaf: The common bugs observed are leaf caterpillar, Neetle caterpillar, Leaf hopper, Mite, Ear corn caterpillar.
Leaf Caterpillar: This insect can consume all the leaves of the plant in short duration. The quality and yield of the seeds get decreased due to the heavy attack.
Control: This can be controlled by the old larvae around the surface and tossing away the attacked leaves.
Needle Caterpillar: This caterpillar is covered with spines and produces a burning feeling when permitted to exposure to skin as it produces certain chemical compound. Initially the insect crowded in the leaf and after that spread all over the plant when it ages.
Control: Manually, the pest can be eliminated only by soaking it in water or kerosene. The heavy attack can be controlled by spraying organophosphate insecticides.
Leaf Hopper: This insect is found primarily in tropical and subtropical areas. The pest targets the leaf and draws 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 controlled by utilizing insecticides like imidachloprid, beta cyfluthrin or carbosulfan.
Mite: Mite also assaults the leaf and makes the entire plant weak. The pest presence can be identified when the leaf ended up being yellowish, shrinks, reddens and drop. The pest can also be spread 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 bug 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 completely drops. This bug is seen around the tropical area.
The toxic enzyme in the plant shrinks the whole plant.
Control: Insecticides recommended for this bug is chlorfluazuron, diflubenzuron, alfamethrin, and lamda cyhalothrin.
Tip borer caterpillar: The bugs commonly takes place attacks the plant in blooming season and this insect is seen widely 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 suggested to burn. The insecticides like monocrotophos and bensultap are sprayed at the flowering season.