Pests Of Jatropha

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Jatropha Curcas is gaining significance commercially as the need of nonrenewable fuel sources increases enormously and also jatropha curcas is an environmentally friendly energy plantation. Plantation of this plant is considered to be an exceptional fuel substitute and it is likewise very cost-effective compared to other fuels. Recently, jatropha curcas is facing some trouble with bugs and illness. The pests are categorized into two ranges: Pest that impact young plants and Pest that impact matured plants.


Young plant insects: Cutworm, Scarabeid Beetle, Army worm, Grasshopper.


Agrotis ipsilon: It is typically called Cut worm. This insect affects the seedlings and young . 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 insect can be managed by picking the larva found around the plants or by blending the bran, sawdust with insecticides.


Scarabaeid Beetle: This bug destroys the root of the young plant. Initially, the larva takes in the natural matters present in the soil and then concerns the root. The larva attack may kill the whole plant.


Control: The plant with great resistance power can conquer the pest. For heavy attack, insecticides with parts carbosulfan and carbofuran can be used to eliminate the bug.


Army worm: Spodoptera litura existence can be identified by biting in the leaves. The serious infection could entirely kill the plants.


Control: Insecticides are utilized to control the insects.


Grasshopper: This is common pest found in a number of plants. Valanga nigricornis and Locusta migratoria commonly assaults the plant. The insect often assaults 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 harms the jatropha curcas stem and it is commonly seen in Indonesia. The stem attacked by this bug typically drop. The presence can be recognized by the larva penetration hole at the stem.


Control: The Insecticide normally utilized 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 pest can eat all the leaves of the plant in short period. The quality and yield of the seeds get decreased 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 feeling when allowed to exposure to skin as it produces specific chemical substance. Initially the pest crowded in the leaf and then spread out all over the plant when it ages.


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 bug is found mostly in tropical and subtropical regions. The bug targets the leaf and draws all the nutrients of the leaf and gets curls at the suggestion. 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 likewise assaults the leaf and makes the entire plant weak. The pest existence can be recognized when the leaf become yellowish, shrinks, reddens and fall down. The pest can also be spread out through fallen leaves.


Control: Some preventive steps can be simulated correct sanitation and burning the fallen leaves. Heavy attack can be dealt with by spraying insecticides.


Some dreadful bug which assaults 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 completely falls down. This pest is seen around the tropical region.


The toxic enzyme in the plant shrinks the whole plant.


Control: Insecticides suggested for this insect is chlorfluazuron, diflubenzuron, alfamethrin, and lamda cyhalothrin.


Tip borer caterpillar: The insects frequently happens attacks the plant in flowering season and this pest is seen widely in tropical regions. The female bug 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 recommended to burn. The insecticides like monocrotophos and bensultap are sprayed at the flowering season.

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