Jatropha Curcas is getting significance commercially as the demand of fossil fuels increases greatly and likewise
jatropha curcas is an environment-friendly energy plantation. Plantation of this plant is thought about to be an exceptional fuel replacement and it is likewise extremely cost-effective compared to other fuels. Recently,
Jatropha is facing some problem with insects and diseases. The pests are classified into two varieties: Pest that affect young plants and Pest that
affect matured plants.
Young plant insects: Cutworm, Scarabeid Beetle, Army worm, Grasshopper.
Agrotis ipsilon: It is commonly referred to as Cut worm. This insect impacts 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 diminished the plant entirely.
Control: This bug can be managed by
selecting the larva found around the plants or by mixing the bran, sawdust with insecticides.
Scarabaeid Beetle: This pest damages 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 kill the entire plant.
Control: The plant with excellent resistance power can conquer the pest. For heavy attack, insecticides with
components carbosulfan and carbofuran can be utilized to eliminate the insect.
Army worm: Spodoptera litura
existence can be determined by biting in the leaves. The severe infection could totally eliminate the plants.
Control: Insecticides are utilized to control the pests.
Grasshopper: This prevails insect discovered in numerous plants. Valanga nigricornis and Locusta migratoria commonly assaults the plant. The insect 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 insect harms the
jatropha curcas stem and it is widely seen in Indonesia. The stem attacked by this bug generally drop. The presence can be determined by the
larva penetration hole at the stem.
Control: The Insecticide typically used to manage this insect is carbofuran.
Pest of leaf: The
common pests 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 duration. The
quality and yield of the seeds get decreased due to the heavy attack.
Control: This can be controlled by selecting the old larvae around the surface area and discarding the assaulted leaves.
Needle Caterpillar: This caterpillar is covered with spines and produces a burning sensation when enabled to call with skin as it produces specific chemical compound. Initially the
bug crowded in the leaf and then spread out all over the plant when it grows older.
Control: Manually, the bug can be killed just 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 bug targets the leaf and sucks all the
nutrients of the leaf and gets curls at the pointer. Later, the entire leaf dry and pass away.
Control: The heavy attack can be managed by utilizing insecticides like imidachloprid, beta cyfluthrin or carbosulfan.
Mite: Mite likewise assaults the leaf and makes the whole plant weak. The bug presence can be
determined when the leaf become yellow-colored, diminishes, reddens and fall down. The insect can likewise be spread out through fallen leaves.
Control: Some preventive procedures can be done like proper sanitation and burning the fallen leaves. Heavy attack can be dealt with by spraying insecticides.
Some
terrible insect 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 during bloom period so the crop yield completely drops. This pest is seen around the tropical area.
The hazardous 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 commonly happens
attacks the plant in flowering season and this bug is seen widely in tropical areas. 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 advised to burn. The
insecticides like monocrotophos and bensultap are sprayed at the blooming season.
