Jatropha Curcas is gaining significance commercially as the demand of fossil fuels increases tremendously and also jatropha curcas is an environment-friendly energy plantation. Plantation of this plant is considered to be an outstanding fuel substitute and it is also very cost-effective compared to other fuels. Recently, jatropha curcas is facing some problem with pests and diseases. The bugs are categorized into two ranges: Pest that impact young plants and Pest that impact developed plants.
Young plant pests: Cutworm, Scarabeid Beetle, Army worm, Grasshopper.
Agrotis ipsilon: It is typically understood as Cut worm. This bug 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 area and this will diminished the plant completely.
Control: This pest can be managed by picking the larva discovered around the plants or by blending the bran, sawdust with insecticides.
Scarabaeid Beetle: This insect ruins the root of the young plant. Initially, the larva takes in the organic matters present in the soil and then comes to the root. The larva attack may eliminate the entire plant.
Control: The plant with good resistance power can conquer the bug. For heavy attack, insecticides with elements carbosulfan and carbofuran can be utilized to kill the bug.
Army worm: Spodoptera litura existence can be recognized by biting in the leaves. The serious infection could entirely eliminate the plants.
Control: Insecticides are used to control the bugs.
Grasshopper: This prevails pest in several plants. Valanga nigricornis and Locusta migratoria extensively attacks the plant. The insect frequently attacks the young plant.
Control: The insecticides utilized betacyfluthrin, cypermethrin, thiodicarb, MIPC, and fipronil.
Pest observed in fully grown plants:
Pest of Stem: Ostrinia furnacalis, Xyleborus spp.
Ostrinia furnacalis and Xyleborus: This bug damages the jatropha curcas stem and it is widely seen in Indonesia. The stem attacked by this bug generally drop. The presence can be recognized by the larva penetration hole at the stem.
Control: The Insecticide generally used to control this bug is carbofuran.
Pest of leaf: The common insects observed are leaf caterpillar, Neetle caterpillar, Leaf hopper, Mite, Ear corn caterpillar.
Leaf Caterpillar: This pest can consume all the leaves of the plant simply put period. 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 and discarding the attacked leaves.
Needle Caterpillar: This caterpillar is covered with spines and produces a burning sensation when allowed to call with skin as it produces specific chemical compound. Initially the bug crowded in the leaf and after that spread out all over the plant when it gets older.
Control: Manually, the pest can be killed only by soaking it in water or kerosene. The heavy attack can be controlled by spraying organophosphate insecticides.
Leaf Hopper: This insect is found mainly in tropical and subtropical areas. The pest targets the leaf and draws all the nutrients of the leaf and gets curls at the tip. Later, the whole leaf dry and pass away.
Control: The heavy attack can be controlled 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 become yellow-colored, shrinks, reddens and drop. The insect can likewise be spread out through fallen leaves.
Control: Some preventive steps 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 pest which attacks the plant throughout bloom duration so the crop yield entirely falls down. This bug is seen around the tropical region.
The harmful 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 pest is seen commonly in tropical regions. The female pest 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 recommended to burn. The insecticides like monocrotophos and bensultap are sprayed at the blooming season.
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Pests Of Jatropha
Penny Davison edited this page 2025-01-11 21:27:00 +00:00