Jatropha jatropha curcas is gaining importance commercially as the demand of fossil fuels increases greatly and also jatropha curcas is an environmentally friendly energy plantation. Plantation of this plant is thought about to be an excellent fuel replacement and it is also extremely economical compared to other fuels. Recently, Jatropha is facing some trouble with bugs and illness. The pests are categorized into 2 ranges: 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 understood as Cut worm. This insect affects the seedlings and young Jatropha plants. If the plant is impacted by the cutworm, the stem gets cut nearer to the soil surface and this will diminished the plant totally.
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 natural matters 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 conquer the insect. For heavy attack, insecticides with elements carbosulfan and carbofuran can be utilized to eliminate the pest.
Army worm: Spodoptera litura existence can be recognized by biting in the leaves. The serious infection could totally eliminate the plants.
Control: Insecticides are used to manage the pests.
Grasshopper: This prevails pest found in a number of plants. Valanga nigricornis and Locusta migratoria commonly attacks the plant. The pest typically assaults 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 damages the Jatropha stem and it is extensively seen in Indonesia. The stem attacked by this insect usually fall down. The existence can be identified by the larva penetration hole at the stem.
Control: The Insecticide generally used to manage this insect is carbofuran.
Pest of leaf: The typical bugs 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 short duration. The quality and yield of the seeds get minimized due to the heavy attack.
Control: This can be controlled by selecting the old larvae around the surface and getting rid of the attacked leaves.
Needle Caterpillar: This caterpillar is covered with spines and produces a burning sensation when enabled to exposure to skin as it produces particular chemical substance. Initially the insect crowded in the leaf and after that spread out all over the plant when it gets older.
Control: Manually, the insect 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 discovered primarily in tropical and subtropical regions. The bug targets the leaf and sucks all the nutrients of the leaf and gets curls at the suggestion. Later, the whole leaf dry and pass away.
Control: The can be managed by utilizing insecticides like imidachloprid, beta cyfluthrin or carbosulfan.
Mite: Mite likewise attacks the leaf and makes the whole plant weak. The pest existence can be determined when the leaf become yellowish, shrinks, turns red and fall down. The pest can also be spread through fallen leaves.
Control: Some preventive steps can be simulated appropriate sanitation and burning the fallen leaves. Heavy attack can be dealt with by spraying insecticides.
Some terrible insect which attacks flower and fruit are, Stink bug (Nezara viridula)
Chrysocoris javanus, Tip borer caterpillar.
Stink Bug: Sting bug is a severe bug which attacks the plant throughout blossom period so the crop yield completely falls down. This pest 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 commonly takes place attacks the plant in flowering season and this pest is seen extensively in tropical areas. The female insect 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 suggested to burn. The insecticides like monocrotophos and bensultap are sprayed at the blooming season.
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Pests Of Jatropha
ameegist763284 edited this page 2025-01-11 14:03:00 +01:00