Management of Garlic Thrips, Thrips tabaci Linderman. (Thysanoptera: Thripidae) through Different Pest Management Techniques in Garlic Crop
Management of Garlic Thrips, Thrips tabaci Linderman. (Thysanoptera: Thripidae) through Different Pest Management Techniques in Garlic Crop
Ahmad Ur Rahman Saljoqi, Muhammad Salim* and Iftikhar Ahmad
ABSTRACT
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.
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June 2021
Vol. 37, Iss. 2, Pages 331-713
