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Jatropha Curcas is gaining significance commercially as the need of nonrenewable fuel sources increases significantly and also Jatropha is an eco-friendly energy plantation. Plantation of this plant is considered to be an exceptional fuel substitute and it is likewise extremely affordable compared to other fuels. Recently, Jatropha is dealing with some trouble with insects and illness. The bugs are categorized into 2 ranges: Pest that impact young plants and Pest that impact matured plants.
Young plant pests: Cutworm, Scarabeid Beetle, Army worm, Grasshopper.
Agrotis ipsilon: It is frequently known as Cut worm. This insect impacts the seedlings and young Jatropha plants. If the plant is affected by the cutworm, the stem gets cut nearer to the soil surface area and this will diminished the plant completely.
Control: This bug can be controlled by choosing 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 concerns the root. The larva attack might kill the entire plant.
Control: The plant with excellent resistance power can conquer the insect. For heavy attack, insecticides with elements carbosulfan and carbofuran can be used to kill the pest.
Army worm: Spodoptera litura presence can be recognized by biting in the leaves. The extreme infection could totally kill the plants.
Control: Insecticides are used to control the bugs.
Grasshopper: This prevails insect found in a number of plants. Valanga nigricornis and Locusta migratoria commonly attacks the plant. The pest 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 bug harms the jatropha curcas stem and it is widely seen in Indonesia. The stem assaulted by this insect generally drop. The existence can be identified by the larva penetration hole at the stem.
Control: The Insecticide typically to manage this insect 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 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 controlled 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 sensation when enabled to exposure to skin as it produces certain chemical compound. Initially the pest crowded in the leaf and after that spread all over the plant when it ages.
Control: Manually, the bug can be eliminated only by soaking it in water or kerosene. The heavy attack can be managed by spraying organophosphate insecticides.
Leaf Hopper: This insect is found primarily in tropical and subtropical areas. The insect targets the leaf and sucks all the nutrients of the leaf and gets curls at the idea. Later, the entire leaf dry and die.
Control: The heavy attack can be controlled by using insecticides like imidachloprid, beta cyfluthrin or carbosulfan.
Mite: Mite likewise attacks the leaf and makes the entire plant weak. The bug existence can be recognized when the leaf become yellowish, diminishes, reddens and drop. The bug can also be spread through fallen leaves.
Control: Some preventive steps can be simulated correct sanitation and burning the fallen leaves. Heavy attack can be dealt with by spraying insecticides.
Some awful insect 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 blossom period so the crop yield totally drops. This bug is seen around the tropical region.
The hazardous enzyme in the plant shrinks the whole plant.
Control: Insecticides recommended for this pest is chlorfluazuron, diflubenzuron, alfamethrin, and lamda cyhalothrin.
Tip borer caterpillar: The bugs typically occurs 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 tips.
Control: Manually, the assaulted seeds are recommended to burn. The insecticides like monocrotophos and bensultap are sprayed at the flowering season.
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