Jatropha Curcas is acquiring value commercially as the need of fossil fuels increases tremendously and also Jatropha is an environment-friendly energy plantation. Plantation of this plant is considered to be an outstanding fuel replacement and it is also very affordable compared to other fuels. Recently, jatropha curcas is facing some problem with insects and diseases. The insects are classified into two varieties: Pest that impact young plants and Pest that impact developed plants.
Young plant insects: Cutworm, Scarabeid Beetle, Army worm, Grasshopper.
Agrotis ipsilon: It is typically known as Cut worm. This pest affects 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 completely.
Control: This insect can be controlled 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 consumes the organic matters present in the soil and after that concerns the root. The larva attack might eliminate the entire plant.
Control: The plant with excellent resistance power can get rid of the insect. For heavy attack, insecticides with parts carbosulfan and carbofuran can be utilized to kill the pest.
Army worm: Spodoptera litura existence can be determined by biting in the leaves. The extreme infection could entirely eliminate the plants.
Control: Insecticides are used to control the bugs.
Grasshopper: This is typical pest found in several plants. Valanga nigricornis and Locusta migratoria extensively attacks the plant. The pest often attacks 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 insect harms the jatropha curcas stem and it is commonly seen in Indonesia. The stem attacked by this bug typically drop. The existence can be determined by the larva penetration hole at the stem.
Control: The Insecticide normally utilized to control this bug is carbofuran.
Pest of leaf: The typical pests 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 other words 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 and throwing away the assaulted leaves.
Needle Caterpillar: This caterpillar is covered with spinal columns and produces a burning sensation when permitted to call with skin as it produces particular chemical substance. Initially the insect crowded in the leaf and then spread all over the plant when it gets older.
Control: Manually, the pest can be eliminated just by soaking it in water or kerosene. The heavy attack can be controlled by spraying organophosphate insecticides.
Leaf Hopper: This bug is mainly in tropical and subtropical regions. The pest targets the leaf and sucks all the nutrients of the leaf and gets curls at the tip. Later, the whole leaf dry and die.
Control: The heavy attack can be controlled by utilizing insecticides like imidachloprid, beta cyfluthrin or carbosulfan.
Mite: Mite likewise assaults the leaf and makes the whole plant weak. The pest existence can be identified 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 proper sanitation and burning the fallen leaves. Heavy attack can be dealt with by spraying insecticides.
Some awful insect which attacks flower and fruit are, Stink bug (Nezara viridula)
Chrysocoris javanus, Tip borer caterpillar.
Stink Bug: Sting bug is a major insect which assaults the plant during bloom period so the crop yield entirely drops. This insect is seen around the tropical area.
The toxic enzyme in the plant shrinks the whole plant.
Control: Insecticides suggested for this pest is chlorfluazuron, diflubenzuron, alfamethrin, and lamda cyhalothrin.
Tip borer caterpillar: The pests commonly happens attacks the plant in blooming season and this pest 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 suggestions.
Control: Manually, the attacked seeds are recommended to burn. The insecticides like monocrotophos and bensultap are sprayed at the blooming season.
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Pests Of Jatropha
lesteroconor6 edited this page 2025-01-18 08:13:48 +08:00