Jatropha jatropha curcas is getting value commercially as the demand of fossil fuels increases significantly and also jatropha curcas is an environment-friendly energy plantation. Plantation of this plant is thought about to be an exceptional fuel alternative and it is likewise really cost-effective compared to other fuels. Recently, jatropha curcas is dealing with some difficulty with bugs and illness. The pests are classified into two varieties: Pest that impact young plants and Pest that impact developed plants.
Young plant bugs: Cutworm, Beetle, Army worm, Grasshopper.
Agrotis ipsilon: It is typically referred to 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 entirely.
Control: This pest can be controlled by picking the larva found around the plants or by mixing the bran, sawdust with insecticides.
Scarabaeid Beetle: This insect damages the root of the young plant. Initially, the larva takes in the organic matters present in the soil and after that pertains to the root. The larva attack might eliminate the whole plant.
Control: The plant with good resistance power can conquer the bug. For heavy attack, insecticides with components carbosulfan and carbofuran can be used to eliminate the pest.
Army worm: Spodoptera litura existence can be determined by biting in the leaves. The severe infection might completely kill the plants.
Control: Insecticides are utilized to control the pests.
Grasshopper: This is common insect discovered in a number of plants. Valanga nigricornis and Locusta migratoria commonly attacks the plant. The bug often assaults 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 damages the jatropha curcas stem and it is widely seen in Indonesia. The stem assaulted by this bug typically fall down. The presence can be recognized by the larva penetration hole at the stem.
Control: The Insecticide generally used to manage this pest is carbofuran.
Pest of leaf: The typical insects observed are leaf caterpillar, Neetle caterpillar, Leaf hopper, Mite, Ear corn caterpillar.
Leaf Caterpillar: This insect can eat all the leaves of the plant in short duration. The quality and yield of the seeds get lowered due to the heavy attack.
Control: This can be controlled by selecting the old larvae around the surface area and throwing 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 specific chemical compound. Initially the bug crowded in the leaf and after that spread all over the plant when it grows older.
Control: Manually, the insect can be killed only by soaking it in water or kerosene. The heavy attack can be managed by spraying organophosphate insecticides.
Leaf Hopper: This bug is discovered mostly in tropical and subtropical areas. The insect targets the leaf and sucks all the nutrients of the leaf and gets curls at the idea. Later, the entire leaf dry and die.
Control: The heavy attack can be managed by utilizing insecticides like imidachloprid, beta cyfluthrin or carbosulfan.
Mite: Mite also assaults the leaf and makes the entire plant weak. The pest existence can be recognized when the leaf ended up being yellow-colored, diminishes, reddens and drop. The insect can also be spread through fallen leaves.
Control: Some preventive steps can be done like correct sanitation and burning the fallen leaves. Heavy attack can be dealt with by spraying insecticides.
Some dreadful pest which attacks flower and fruit are, Stink bug (Nezara viridula)
Chrysocoris javanus, Tip borer caterpillar.
Stink Bug: Sting bug is a severe pest which assaults the plant during bloom duration so the crop yield totally drops. This insect is seen around the tropical area.
The toxic enzyme in the plant diminishes the entire plant.
Control: Insecticides suggested for this insect is chlorfluazuron, diflubenzuron, alfamethrin, and lamda cyhalothrin.
Tip borer caterpillar: The pests commonly occurs attacks the plant in flowering season and this insect is seen extensively 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 attacked seeds are advised to burn. The insecticides like monocrotophos and bensultap are sprayed at the blooming season.
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Pests Of Jatropha
Bernadette Sneed edited this page 2025-01-12 14:55:52 +08:00