Neem Seed Formulations at Farm Level
§ The neem formulations have been extensively used by the farmers in Sind and Punjab on cotton, rice, vegetables and fruits such as mango and guava. In 5 case studies on cotton in Khairpur the efficacy of the neem formulations has been at par with insecticides such as Methamidophos, Thiodon, Deltaphos, Karate and Talstar. Neem-based pesticides are now globally known as effective and environment friendly pest control materials.
§ Neem Oil Solution: Neem oil is extracted by crushing the neem seed in an electric expeller. After oil extraction, neem seed cake is left over as a residue. Then neem oil suspension is prepared by shaking after adding 1% detergent (soap, surf or any liquid detergent) and an equal amount of water in the purified neem oil. Thereafter, extra water is added to the suspension to make 1% neem oil spray solution. The solution can be sprayed from 0.5-2% concentrations depending on the spices crop and the nature of insect pests. Neem oil solution sprays are applied at 10-12 days interval.
§ Neem Seed /Neem Cake Powder Water Extract: Fine neem seed /neem cake powder is obtained by grinding neem seed /neem cake and sieving through 60 mesh sieve. The powder is kept in a cotton bag along with 1% detergent (soap, surf or any liquid detergent) and soaked in hot water (80°C) for 16-20 hours. The extract thus obtained is diluted to prepare 2% water solution based on the weight of the powder.
§ The solution should be prepared fresh for each treatment and should be used within 12-24 hours after preparation
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