International Journal of Academic and Applied Research (IJAAR)   Year: 2019 | Volume: 3 | Issue: 6 | Page No.: 16-23 Comparison of Insect Pest Population and Use of Neem Seed Extract on Different Tomato Varieties Enayat Aziz, Ghulam Jilani, Abdul Ghaffar Khoso, Farrukh Asghar, Ameer Uddin, Khalil Asghar Abstract: A study was carried out on Comparison of Pest Population and Use of Neem Seed Extract on Different Varieties of Tomato. Repellency of Neem Seed Extract was studied against sucking insect pest on tomato plants by free choice method in the green house of the Faculty of Agriculture, LUAWMS. Three genotypes of tomato sown separately at Coconut Farm, Uthal. Tomato sown had sprayed with Neem Seed Extract against whitefly, jassid, aphid, borer and population of these insect pests and predators was compared on three varieties of each crop separately sown in Randomized Complete Block Design (RCBD). The result observed that varietal preference of monitored insect pests differed significantly in tomato varieties. The highest population was 7.09, 6.40 and 4.55 whiteflies / leaf on varieties of Tomato Rio, T-1359 and T-206 respectively recorded on 25th January. The highest population of jassid was 2.93, 2.66 and 2.44 / leaf on Tomato Rio, T-1359 and T-206 respectively. The highest population of aphid was 3.26, 3.24 and 3.15 / leaf on T-1359, T-206 and Tomato Rio respectively. Similarly, per plant population was relatively lower on all the varieties of tomato. The average population was negligible (0.060 fruit borer / plant. The population of predator was higher 1.14 / plant on T-1359 variety in 14th February as compared to other varieties 0.60 and 0.76 Tomato Rio and T-206 respectively. Since pest population was increased beyond ETL on 25th January. Therefore 2 percent neem seed extract was applied on the crops on 25th January, 09th February and 24th February. These applications kept the pest population below ETL till the last observation on 5th March. Population of predators was not affected significantly by application of 2 percent of neem seed extract because of predators are not phytophagous like other pests.