Jatropha Curcas is acquiring significance commercially as the demand of nonrenewable fuel sources increases tremendously and also jatropha curcas is an environment-friendly energy plantation. Plantation of this plant is considered to be an outstanding fuel alternative and it is likewise very cost-effective compared to other fuels. Recently, jatropha curcas is dealing with some difficulty with insects and illness. The pests are classified into two ranges: Pest that affect young plants and Pest that affect developed plants.
Young plant pests: 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 impacted by the cutworm, the stem gets cut nearer to the soil surface and this will diminished the plant completely.
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 pest destroys the root of the young plant. Initially, the larva takes in the natural matters present in the soil and after that comes to the root. The larva attack might eliminate the entire plant.
Control: The plant with good resistance power can get rid of the pest. For heavy attack, insecticides with components carbosulfan and carbofuran can be utilized to eliminate the insect.
Army worm: Spodoptera litura presence can be determined by biting in the leaves. The extreme infection might totally eliminate the plants.
Control: Insecticides are utilized to control the insects.
Grasshopper: This prevails insect discovered in numerous plants. Valanga nigricornis and Locusta migratoria extensively assaults the plant. The insect frequently 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 widely seen in Indonesia. The stem assaulted by this insect normally drop. The presence can be recognized by the larva penetration hole at the stem.
Control: The Insecticide typically used to manage 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 insect can consume all the leaves of the plant in brief period. The quality and yield of the seeds get reduced due to the heavy attack.
Control: This can be managed by choosing the old larvae around the surface area and getting rid of the attacked leaves.
Needle Caterpillar: This caterpillar is covered with spines and produces a burning experience when allowed to call with skin as it produces specific chemical compound. Initially the pest crowded in the leaf and after that spread out all over the plant when it grows older.
Control: Manually, the bug can be killed only 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 regions. The pest targets the leaf and sucks all the nutrients of the leaf and gets curls at the pointer. 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 bug existence can be recognized when the leaf ended up being yellowish, shrinks, reddens and fall down. The bug can likewise be spread out through fallen leaves.
Control: Some preventive procedures can be simulated proper sanitation and burning the fallen leaves. Heavy attack can be dealt with by spraying insecticides.
Some terrible insect which attacks 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 throughout blossom period so the crop yield totally drops. This insect is seen around the tropical area.
The poisonous enzyme in the plant diminishes the whole plant.
Control: Insecticides recommended for this bug is chlorfluazuron, diflubenzuron, alfamethrin, and .
Tip borer caterpillar: The pests commonly takes place attacks the plant in flowering season and this bug is seen widely in tropical areas. The female pest 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 recommended 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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