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The quality and marketing of horticultural crops is affected by the feeding of thrips on plant tissues. Thrips commonly feed upon the gladiolus and different vegetative and floral parts of gladioli are attacked by them. Application of chemical insecticides provides effective control of insect pest in short period of time. The present investigation was carried out on Jasminum sambac against flower thrips for efficacy of insecticides. To conduct this experiment, six insecticides viz., imidacloprid 20Sl, Spinosad 240SC, Spintoram 120SC, Chlophenapyre, Imidacloprid+fipronil and abamectin were applied. Thrips population was observed on jasmine flower before application of insecticides and thrips mortality data was noted after 24, 72 and 168 hours of insecticides spray. The maximum mortality of thrips was recorded in Imidacloprid+fipronil (68.45%) and Spinosad (65.45%) after 24 hours of insecticides spray. The lowest mortality of thrips was counted in abamectin and imidacloprid. Population of thrips was reduced after 72 and 168 hours as compared to 24 hours after insecticides spray. It is concluded from the findings of investigation that the insecticide (Imidacloprid+fipronil) was found effective against the population of thrips after 24, 72 and 168 hours in years, 2021 and 2022, respectively when compared to other insecticides. [ABSTRACT FROM AUTHOR]

Field efficacy of different management techniques were studied against thrips (Thrips tabaci) nymph and adult populations in garlic crop during the year 2017-18. The experiment was laid out in Randomized Complete Block Design having two factors with three replications and six treatments. Treatments Emamectin 1.9 EC @ 750 ml ha-1, orange (Citrus aurantium L.) peel extract @ 5%, neem (Azadirachta indica) seed extract @ 5%, neem oil @ 3%, green lacewing, Chrysoperla carnea @ 3 eggs plant-1, were applied three times. A total of 30 plants in each treatment were selected randomly for the data collection at 1, 2, 3, 6, 9 and 12 days intervals. Peak population of thrips (51.27 plant-1) was noticed during the last week of April. Results regarding different treatments showed that Emamectin was effective exhibiting minimum mean number of T. tabaci (nymphs 1.74 plant-1 and adults 1.31 plant-1) as compared to the rest of treatments. This was followed by orange peel extract and neem seed extract treated plots where 3.35 and 3.26 nymphs plant-1 and 2.60 and 2.69 adults plant-1 respectively were recorded. The data further showed that the plots treated with neem oil and C. carnea recorded mean number of 3.18 and 6.41 nymphs plant-1 and 2.52 and 5.68 adults plant-1, respectively. Emamectin treated plots also showed promising results in terms of plant height and number of leaves by recording maximum plant height (84.2 cm) and maximum number of leaves (8.76 plant-1). Neem seed extract and neem oil treated plots showed average plant height of 70.4 and 69.3 cm with average number of leaves of 8.24 and 8.18 plant-1, respectively. Plots treated with Emamectin also resulted in maximum yield i.e. 19.3 tons ha-1, while only 11.4 tons ha-1 was obtained from the control plots. It is obvious from the above results that the use of Emamectin along with botanical extracts are effective in controlling T. tabaci infestation, and hence may be used in garlic crop for managing this serious pest. [ABSTRACT FROM AUTHOR]