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Pests Of Jatropha
Jatropha Curcas is getting importance commercially as the demand of fossil fuels increases greatly and also Jatropha is an eco-friendly energy plantation. Plantation of this plant is considered to be an exceptional fuel replacement and it is also extremely affordable compared to other fuels. Recently, Jatropha is dealing with some difficulty with bugs and diseases. The bugs are categorized into 2 ranges: Pest that affect young plants and Pest that affect matured plants.
Young plant bugs: Cutworm, Scarabeid Beetle, Army worm, Grasshopper.
Agrotis ipsilon: It is frequently referred to as Cut worm. This bug impacts the seedlings and young Jatropha plants. If the plant is impacted by the cutworm, the stem gets cut nearer to the soil surface area and this will shrunk the plant completely.
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 ruins the root of the young plant. Initially, the larva consumes the organic matters present in the soil and after that comes to the root. The larva attack might kill the entire plant.
Control: The plant with great resistance power can conquer the bug. For heavy attack, insecticides with components carbosulfan and carbofuran can be used to eliminate the bug.
Army worm: Spodoptera litura existence can be recognized by biting in the leaves. The serious infection could totally kill the plants.
Control: Insecticides are utilized to control the insects.
Grasshopper: This is typical insect found in numerous plants. Valanga nigricornis and Locusta migratoria widely attacks the plant. The pest often 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 bug damages the Jatropha stem and it is commonly seen in Indonesia. The stem attacked by this insect normally drop. The can be recognized by the larva penetration hole at the stem.
Control: The Insecticide normally utilized 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 insect can consume all the leaves of the plant in short period. The quality and yield of the seeds get minimized due to the heavy attack.
Control: This can be managed by choosing the old larvae around the surface and throwing away the attacked leaves.
Needle Caterpillar: This caterpillar is covered with spines and produces a burning experience when allowed to exposure to skin as it produces certain chemical compound. Initially the insect crowded in the leaf and after that spread 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 controlled by spraying organophosphate insecticides.
Leaf Hopper: This pest is discovered primarily in tropical and subtropical regions. The insect targets the leaf and draws all the nutrients of the leaf and gets curls at the pointer. Later, the entire leaf dry and pass away.
Control: The heavy attack can be controlled by using insecticides like imidachloprid, beta cyfluthrin or carbosulfan.
Mite: Mite also assaults the leaf and makes the whole plant weak. The insect presence can be identified when the leaf become yellowish, shrinks, reddens and drop. The insect can also be spread out through fallen leaves.
Control: Some preventive measures can be simulated correct sanitation and burning the fallen leaves. Heavy attack can be treated by spraying insecticides.
Some terrible insect which assaults flower and fruit are, Stink bug (Nezara viridula)
Chrysocoris javanus, Tip borer caterpillar.
Stink Bug: Sting bug is a major insect which attacks the plant during bloom period so the crop yield entirely falls down. This insect is seen around the tropical area.
The harmful enzyme in the plant shrinks the entire plant.
Control: Insecticides advised for this bug is chlorfluazuron, diflubenzuron, alfamethrin, and lamda cyhalothrin.
Tip borer caterpillar: The insects commonly happens attacks the plant in flowering season and this bug is seen widely in tropical areas. The female bug laid the eggs on the tender part of the plant and the young larvae feed the young fruits and plant suggestions.
Control: Manually, the assaulted seeds are suggested to burn. The insecticides like monocrotophos and bensultap are sprayed at the flowering season.