Pests Of Jatropha
Jatropha Curcas is gaining significance commercially as the demand of fossil fuels increases enormously and also jatropha curcas is an environment-friendly energy plantation. Plantation of this plant is thought about to be an outstanding fuel substitute and it is also very cost-effective compared to other fuels. Recently, Jatropha is facing some problem with bugs and diseases. The bugs are categorized into two varieties: Pest that impact young plants and Pest that impact matured plants.
Young plant insects: Cutworm, Scarabeid Beetle, Army worm, Grasshopper.
Agrotis ipsilon: It is commonly called Cut worm. This pest impacts 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 diminished the plant totally.
Control: This bug can be managed by picking the larva discovered around the plants or by mixing the bran, sawdust with insecticides.
Scarabaeid Beetle: This insect destroys the root of the young plant. Initially, the larva takes in the natural matters present in the soil and after that concerns the root. The larva attack might kill the entire plant.
Control: The plant with excellent resistance power can overcome the insect. For heavy attack, insecticides with components carbosulfan and carbofuran can be utilized to kill the bug.
Army worm: Spodoptera litura presence can be recognized by biting in the leaves. The serious infection might totally kill the plants.
Control: Insecticides are utilized to manage the insects.
Grasshopper: This is common bug discovered in a number of plants. Valanga nigricornis and Locusta migratoria commonly attacks the plant. The pest often 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 pest harms the jatropha curcas stem and it is commonly seen in Indonesia. The stem attacked by this bug normally drop. The presence can be determined by the larva penetration hole at the stem.
Control: The Insecticide generally utilized to control this pest is carbofuran.
Pest of leaf: The common 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 period. The quality and yield of the seeds get decreased due to the heavy attack.
Control: This can be controlled by choosing 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 experience when enabled to contact with skin as it produces specific chemical compound. Initially the in the leaf and then spread 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 bug is found primarily in tropical and subtropical areas. 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 pass away.
Control: The heavy attack can be managed by utilizing insecticides like imidachloprid, beta cyfluthrin or carbosulfan.
Mite: Mite likewise attacks the leaf and makes the entire plant weak. The pest existence can be determined when the leaf ended up being yellowish, diminishes, turns red and drop. The insect can likewise be spread out through fallen leaves.
Control: Some preventive measures can be done like appropriate sanitation and burning the fallen leaves. Heavy attack can be treated by spraying insecticides.
Some dreadful insect which attacks flower and fruit are, Stink bug (Nezara viridula)
Chrysocoris javanus, Tip borer caterpillar.
Stink Bug: Sting bug is a severe insect which attacks the plant during bloom period so the crop yield totally falls down. This pest is seen around the tropical area.
The poisonous enzyme in the plant diminishes the entire plant.
Control: Insecticides advised for this insect is chlorfluazuron, diflubenzuron, alfamethrin, and lamda cyhalothrin.
Tip borer caterpillar: The pests frequently takes place attacks the plant in blooming season and this insect is seen commonly 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 attacked seeds are suggested to burn. The insecticides like monocrotophos and bensultap are sprayed at the blooming season.