Larvicidal activity of Tagetes and Mentha arvensis essential oil against the different instar larvae of Culex mosquitoes. Mosquitoes larvae are the attractive goal for pesticides as mosquitoes used to breed in standing water and therefore it is easy to deal with them in this type of habitat. The use of chemical pesticides may introduce harm to the lives of people and environment. Natural pesticides that we obtained from plants are better and promising than this chemical pesticides. Different aromatic plants oils that we obtained are used in different respects. Mosquitoes are the life threatening vectors which cause several harmful diseases like malaria, Zika virus and dengue. This study deals with the essential oils and extracts which work against this life threatening vector. The pesticidal activity of essential oil of Mentha against the mosquitoes larvae is due to its menthol content which is the main aroma spreading component of Mentha . Mosquitoes feed on the blood and severe as the important vector for spreading diseases related to human. Synthetic chemical pesticides are toxic and contaminating our environment. Natural pesticides may serve as a suitable alternative technique in future. The natural pesticides are effective, eco- friendly and safe surroundings. Mentha and Tagetes were tested for their repellency against Culex quinquefasciatus.

Insects create great nuisance in different manners and spread various diseases. Mosquitoes are arthropods of medical and veterinary importance as they are the vectors of deadly diseases like malaria, dengue and Zika virus. Many different methods are adopted at various parts of the world to control mosquitoes ae well as other insect pest. But challenges are faced with the adoption of such measures, which leads to resistance of target organism and harmful effects to non-target organisms. Bio-pesticides as well as nanotechnology is considered a potential eco-friendly approach in mosquito control research. Plant-mediated nanotechnology is current most and effective method to control the population of mosquitoes. Furthermore, it is analyzed from the various evidences of ill-effects of nanocomposites to the non-targets organisms including mammals, humans, and aquatic insects.

Aphids are the major pest on crops. Use of chemical pesticides create problems. Chemical pesticides affect the human health, environment and also affects non target organisms. Natural insecticide produced from plants are more promising. The Cymbopogon citratus and Hibiscus rosa sinensis are very important plant which have great effect on insects. The aim of this review to tell about essential oil and extracts which affects insect growth and how much it is effective. The problem of agriculture crop was pests and these pests are responsible for damaging crops and effect nutritive value. Lemon grass oil repels insects like mosquitoes, aphids due to which it contains citral and also myrcene, citronella, citronellol, and geraniol. The essential oil is derived from aromatic plants has observed as risk free alternatives.

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