Pests Of Jatropha
Jatropha Curcas is acquiring significance commercially as the demand of fossil fuels increases significantly and also Jatropha is an environmentally friendly energy plantation. Plantation of this plant is thought about to be an excellent fuel alternative and it is also extremely economical compared to other fuels. Recently, Jatropha is facing some problem with pests and illness. The pests are categorized into two ranges: Pest that impact young plants and Pest that impact developed plants.
Young plant bugs: Cutworm, Scarabeid Beetle, Army worm, Grasshopper.
Agrotis ipsilon: It is typically called Cut worm. This insect impacts the seedlings and young Jatropha plants. If the plant is impacted by the cutworm, the stem gets cut nearer to the soil surface and this will diminished the plant totally.
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 destroys the root of the young plant. Initially, the larva consumes the natural matters present in the soil and then pertains to the root. The larva attack might eliminate the whole plant.
Control: The plant with great resistance power can get rid of the pest. For heavy attack, insecticides with elements carbosulfan and carbofuran can be utilized to eliminate the pest.
Army worm: Spodoptera litura existence can be determined by biting in the leaves. The severe infection could totally kill the plants.
Control: Insecticides are utilized to manage the insects.
Grasshopper: This is common bug found in a number of plants. Valanga nigricornis and Locusta migratoria commonly attacks the plant. The pest typically assaults 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 the Jatropha stem and it is commonly seen in Indonesia. The stem attacked by this pest typically drop. The presence can be determined by the larva penetration hole at the stem.
Control: The Insecticide usually used to control this bug is carbofuran.
Pest of leaf: The typical bugs observed are leaf caterpillar, Neetle caterpillar, Leaf hopper, Mite, Ear corn caterpillar.
Leaf Caterpillar: This bug can eat all the leaves of the plant simply put period. The quality and yield of the seeds get lowered due to the heavy attack.
Control: This can be managed by selecting the old larvae around the surface and discarding the assaulted leaves.
Needle Caterpillar: This caterpillar is covered with spines and produces a burning sensation when permitted to contact with skin as it produces particular chemical substance. Initially the pest crowded in the leaf and after that spread out all over the plant when it gets older.
Control: Manually, the insect can be killed just by soaking it in water or kerosene. The heavy attack can be managed by spraying organophosphate insecticides.
Leaf Hopper: This pest is found mostly in tropical and subtropical areas. The insect targets the leaf and draws all the nutrients of the leaf and gets curls at the pointer. Later, the whole leaf dry and die.
Control: The heavy attack can be controlled by using insecticides like imidachloprid, beta cyfluthrin or carbosulfan.
Mite: Mite also attacks the leaf and makes the entire plant weak. The bug presence can be determined when the leaf become yellowish, diminishes, reddens and drop. The bug 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 treated by spraying insecticides.
Some dreadful insect which assaults flower and fruit are, Stink bug (Nezara viridula)
Chrysocoris javanus, Tip borer caterpillar.
Stink Bug: Sting bug is a serious insect which attacks the plant during blossom duration so the crop yield completely falls down. This pest is seen around the tropical region.
The harmful enzyme in the plant diminishes the entire plant.
Control: Insecticides suggested for this pest is chlorfluazuron, diflubenzuron, alfamethrin, and lamda cyhalothrin.
Tip borer caterpillar: The pests typically takes place attacks the plant in blooming season and this pest is seen extensively in tropical areas. 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 assaulted seeds are suggested to burn. The insecticides like monocrotophos and bensultap are sprayed at the flowering season.