Jatropha Curcas is gaining significance commercially as the demand of fossil fuels increases tremendously and likewise Jatropha is an environmentally friendly energy plantation. Plantation of this plant is thought about to be an exceptional fuel alternative and it is also very cost-effective compared to other fuels. Recently, jatropha curcas is facing some problem with pests and illness. The pests are categorized into 2 varieties: Pest that impact young plants and Pest that impact developed plants.
Young plant pests: Cutworm, Scarabeid Beetle, Army worm, Grasshopper.
Agrotis ipsilon: It is commonly understood as Cut worm. This bug impacts 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 shrunk the plant entirely.
Control: This pest can be managed by choosing the larva discovered around the plants or by mixing the bran, sawdust with insecticides.
Scarabaeid Beetle: This the root of the young plant. Initially, the larva consumes the organic matters present in the soil and after that pertains to the root. The larva attack might kill the entire plant.
Control: The plant with good resistance power can conquer the bug. For heavy attack, insecticides with parts carbosulfan and carbofuran can be used to eliminate the bug.
Army worm: Spodoptera litura existence can be recognized by biting in the leaves. The severe infection might totally eliminate the plants.
Control: Insecticides are used to control the bugs.
Grasshopper: This prevails insect found in numerous plants. Valanga nigricornis and Locusta migratoria widely 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 pest harms the jatropha curcas stem and it is extensively seen in Indonesia. The stem assaulted by this insect typically drop. The existence can be determined by the larva penetration hole at the stem.
Control: The Insecticide typically utilized to control this pest 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 simply put duration. The quality and yield of the seeds get minimized due to the heavy attack.
Control: This can be controlled by picking the old larvae around the surface area and tossing away the assaulted leaves.
Needle Caterpillar: This caterpillar is covered with spines and produces a burning feeling when allowed to contact with skin as it produces specific chemical substance. Initially the pest crowded in the leaf and after that spread out all over the plant when it ages.
Control: Manually, the pest can be eliminated 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 regions. The pest targets the leaf and draws all the nutrients of the leaf and gets curls at the tip. 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 attacks the leaf and makes the entire plant weak. The insect existence can be determined when the leaf become yellowish, diminishes, reddens and fall down. The insect can also be spread through fallen leaves.
Control: Some preventive measures can be done like correct sanitation and burning the fallen leaves. Heavy attack can be treated 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 insect which attacks the plant during bloom period so the crop yield completely drops. This insect is seen around the tropical region.
The hazardous enzyme in the plant diminishes the whole plant.
Control: Insecticides suggested for this bug is chlorfluazuron, diflubenzuron, alfamethrin, and lamda cyhalothrin.
Tip borer caterpillar: The insects frequently takes place attacks the plant in flowering season and this bug is seen commonly in tropical regions. 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 advised to burn. The insecticides like monocrotophos and bensultap are sprayed at the flowering season.
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Pests Of Jatropha
Bev Maclanachan edited this page 2025-01-12 11:59:36 +08:00