Jatropha Curcas is acquiring significance commercially as the demand of nonrenewable fuel sources increases greatly and likewise Jatropha is an environmentally friendly energy plantation. Plantation of this plant is considered to be an exceptional fuel alternative and it is also very affordable compared to other fuels. Recently, Jatropha is facing some trouble with pests and diseases. The pests are classified into 2 ranges: Pest that affect young plants and Pest that affect matured plants.
Young plant insects: Cutworm, Scarabeid Beetle, Army worm, Grasshopper.
Agrotis ipsilon: It is typically known as Cut worm. This insect affects the seedlings and young Jatropha plants. If the plant is affected by the cutworm, the stem gets cut nearer to the soil surface and this will shrunk the plant totally.
Control: This insect can be managed by choosing the larva found around the plants or by mixing the bran, sawdust with insecticides.
Scarabaeid Beetle: This bug damages 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 might eliminate the entire plant.
Control: The plant with great resistance power can conquer the insect. For heavy attack, insecticides with elements carbosulfan and carbofuran can be used to eliminate the bug.
Army worm: Spodoptera litura presence can be determined by biting in the leaves. The extreme infection might entirely eliminate the plants.
Control: Insecticides are utilized to manage the pests.
Grasshopper: This prevails pest discovered in numerous plants. nigricornis and Locusta migratoria commonly attacks the plant. The bug typically attacks the young plant.
Control: The insecticides used betacyfluthrin, cypermethrin, thiodicarb, MIPC, and fipronil.
Pest observed in fully grown plants:
Pest of Stem: Ostrinia furnacalis, Xyleborus spp.
Ostrinia furnacalis and Xyleborus: This pest harms the Jatropha stem and it is commonly seen in Indonesia. The stem attacked by this pest normally fall down. The existence can be recognized by the larva penetration hole at the stem.
Control: The Insecticide normally used to control this pest is carbofuran.
Pest of leaf: The typical pests observed are leaf caterpillar, Neetle caterpillar, Leaf hopper, Mite, Ear corn caterpillar.
Leaf Caterpillar: This pest can consume all the leaves of the plant in other words duration. The quality and yield of the seeds get decreased due to the heavy attack.
Control: This can be managed by picking 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 sensation when allowed to contact with skin as it produces particular chemical substance. Initially the insect crowded in the leaf and after that spread all over the plant when it grows older.
Control: Manually, the insect can be killed just by soaking it in water or kerosene. The heavy attack can be controlled by spraying organophosphate insecticides.
Leaf Hopper: This insect is found mostly in tropical and subtropical regions. The insect targets the leaf and draws all the nutrients of the leaf and gets curls at the tip. 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 attacks the leaf and makes the entire plant weak. The pest existence can be identified when the leaf become yellow-colored, diminishes, reddens and fall down. The pest can also be spread out through fallen leaves.
Control: Some preventive procedures can be done like correct sanitation and burning the fallen leaves. Heavy attack can be treated by spraying insecticides.
Some terrible pest which assaults flower and fruit are, Stink bug (Nezara viridula)
Chrysocoris javanus, Tip borer caterpillar.
Stink Bug: Sting bug is a serious bug which assaults the plant during bloom period so the crop yield completely falls down. This insect is seen around the tropical region.
The harmful enzyme in the plant diminishes the entire plant.
Control: Insecticides suggested for this bug is chlorfluazuron, diflubenzuron, alfamethrin, and lamda cyhalothrin.
Tip borer caterpillar: The bugs typically happens attacks the plant in blooming season and this pest is seen widely 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 ideas.
Control: Manually, the attacked seeds are suggested to burn. The insecticides like monocrotophos and bensultap are sprayed at the flowering season.
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Pests Of Jatropha
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