http://localhost:8080/handle/123456789/2759 Sat, 18 Apr 2026 16:15:38 GMT 2026-04-18T16:15:38Z http://localhost:8080/handle/123456789/1690 HOST PREFERENCES OF EPILACHNA BEETLE ON DIFFERENT VARIETIES OF BRINJAL PLANT MILON, MEHDI HASAN The experiment was conducted at the farm of Sher-e-Bangla Agricultural University, Dhaka during the Kharjf -2 season from June to November, 2012 to study host preferences of Epilachna beetle on different varieties of brinjal plant. Each variety was considered as individual treatment. There were ten varieties of brinjal. viz. T1 = Shamli, T1 = Muktakeshi, r3 = Yashaswi, T4 = Mohini, Tc = Anondo, T6 = Sandhya, 'I'7 = Harshita. Tg = Dark staflon, I9 = Shingnath and = Islampuri. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications. Incidence of epilachna beetle showed significant variation on different varieties of brinjal. Among the varieties. Harsitha was found to be the most tolerant against epilachna beetle pest based on the incidence of minimum number of epilachna beetle, number of eggmass and number of grubs per plant was recorded. Varieties of brinjal on epilachna beetle significantly influenced on growth characteristics of rose whereas minimum number of infested plant per plot, minimum number of infested leaf per plant and minimum number of infested fruit per plant were found from 1-larshita variety. The maximum number of healthy and epilachna free brinjal per plant was found in Harshita variety. Yield per plant was significantly influenced by the different varieties of brinjal on epilachna beetle. The highest yield per plant (1777.00 g) was obtained from Harshita variety of brinjal. On the other hand, the lowest yield per plant (155.2 g) was found from Shamli variety of brinjal. These results indicate that the Harshita variety is tolerant to epilachna beetle of brinjal as well as on growth and yield among all the varietal treatments in this study. A Thesis Submitted to the Faculty of Agriculture. Sher-e-I3angla Agricultural University, Dhaka, in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE IN ENTOMOLOGY SEMESTER: January-.June/2013 Sat, 01 Jun 2013 00:00:00 GMT http://localhost:8080/handle/123456789/1690 2013-06-01T00:00:00Z http://localhost:8080/handle/123456789/1682 ECO-FRIENDLY MANAGEMENT OF OKRA SHOOT AND FRUIT BORER USING BOTANICALS AND CHEMICAL HASAN, MD. JAHANGIR An experiment was conducted in the farmer’s field at Rampal, under Munshiganj Sadar Upazila of Munsiganj, Bangladesh during the period from February’2014 to June’ 2014 to study the ecofriendly management of okra shoot and fruit borer (Earias vittella Fab.) using botanicals and chemical. The treatments are comprised with different botanical products, one synthetic chemical insecticide and one untreated control and these are T1 = Neem leaf extract @ 200g/Litre of water sprayed at 7 days interval; T2 = Neem seed karnel extract @200g/Litre of water at 7days interval; T3 = Neem oil @ 4 ml/Litre of water mixed with 10ml of trix liquid sprayed at 7 days interval; T4 = Dholkalmi leaf extract @200g/Litre of water at 7 days interval; T5 = Mahogany leaf extract @200g/Litre of water at 7 days interval; T6 = Suntap 50SP @ 1.5ml/ Litre of water at 7 days interval; T7 = Untreated control. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. The data were recorded on shoot infestation; fruit infestation by number and weight at early, mid and late fruiting stages; plant and yield related attributes as well as yield of okra. Among all treatments T6 (Suntap 50SP) showed best performance against okra shoot and fruit borer and reduced the highest percent of shoot infestation, plant infestation, flower infestation and fruit infestation by number and weight in early, mid and late stages (85.26, 93.58, 100, 100, 100 percent) over control throughout the growing period of okra respectively. Among the different botanical products, Neem oil @ 4 ml/Litre of water mixed with 10ml of trix liquid sprayed at 7 days interval showed best performance in case of shoot infestation, fruit infestation by number and weight in early, mid and late stages, plant infestation and flower infestation. Also in case of yield, plots treated with T3 ( Neem oil @ 4 ml/Litre of water) gave highest products. On the other hand, Dholkalmi leaf extract @ 200g/Litre of water at 7 days interval showed lowest performance in case of shoot infestation, plant infestation and flower infestation and also the plots treated with this treatment showed lowest production of okra. It was revealed from the experiments, T6= Suntap 50SP @ 1.5ml/ Litre of water at 7 days interval showed best result and T7= Untreated Control showed least performance in case of shoot infestation, fruit infestation by number and weight in early, mid and late stages, plant infestation and flower infestation and Yield. Okra yield was increased due to increases of number of branches/plant, number of leaf/plant and plant height on the other hand fruit yield was decreased due to increase of fruit infestation by number and by weight occurs to okra shoot and fruit borer. A Thesis submitted to the Department of Entomology, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE (MS) IN ENTOMOLOGY SEMESTER: JULY-DECEMBER, 2013 Sun, 01 Dec 2013 00:00:00 GMT http://localhost:8080/handle/123456789/1682 2013-12-01T00:00:00Z http://localhost:8080/handle/123456789/1680 EFFECTIVENESS OF SOME CONTROL OPTIONS AGAINST THE INSECT PESTS OF WHEAT AND THEIR NATURAL ENEMIES PARVEZ, MD. SHAHANUR An experiment was conducted to evaluate the effectiveness of sonic control options against the insect pests of wheat and their natural enemies during the period from November. 2012 to Marc!). 2013 at the central thrm of Sher-e-Bangla Agricultural L:niversity, Dhaka. Bangladesh. The experiment consists of six management practices such as: 1,: Cultural control (weeding) at 10 days interval, i2: Mechanical control (handpieking of infested tiller) at 7 days interval: 13: Cultural control + Mechanical control at 7 days interval: 14: Spraying of Suntap 50 SP @3.0 gm/f. of water at 7 days interval -t Mechanical control; 1 5: Spraying of Marshal @3.0 nil/I. of water at 7 days interval - Cultural control + Mechanical control at 7 days interval; T6:Spraying olNeern oil 3.0 nil! 10 1. of vater at 7 days interval + Cultural control -I- Mechanical control at 7 days interval and 17: Untreated control. The experiment was laid out in Randomii.ed Complete Block Design (RCI3D) with three replications. Incidence of major insect pest of wheat was recorded as aphid. wireworm. stem fly and army worm. Incidence of natural enemies were also recorded as lady bird beetle, parasitic wasps (parasitoid). svrphid liv and spider. At tillering stage, the lowest infested plants were observed from T (1.37%) treatment, on the other hand, the highest infested plant was recorded in 17 (1 3.23%) untreated control treatment At panicle initiation stage, the lowest infested plants were observed from Ti(1 .75%) treatment. but the highest infested plants were recorded in 17 (1 5.6O%) untreated control treatment. Finally, during grain filling stage. the lowest infested plants were observed from i 5 (2.49%) treatment, whereas the highest infested plants were recorded in 17 (18.77%) untreated control treatment. The longest plant was measured from T5 (92.80 cm) treatment. while the shortest plant was obtained from 17( 77.56 cm) untreated control treatment. 'Ihe highest yield was recorded from T (3.43 t/ha) treatment, while the lowest yield was obtained from T7 (2.14 t/ha) untreated control treatments. Spraying of Marshal @ 3.0 nil/I, of water at 7 days interval - Cultural control + Mechanical control at 7 days interval showed superior br controlling wheat insect pests. A thesis Submitted to the Faculty of Agriculture. Sher-e-Bangla Agricultural University, Dhaka in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE IN ENTOMOLOGY SEMESTER: JULY-DECEMBER, 2013 Fri, 01 Nov 2013 00:00:00 GMT http://localhost:8080/handle/123456789/1680 2013-11-01T00:00:00Z http://localhost:8080/handle/123456789/1678 INTERCROPPING OF MUSTARD AND ITS EFFECT ON APHID AND HONEYBEE AFRIN, SADIA A study was conducted in the experimental farm of Sher-e-Bangla Agricultural University during the period from November 2012 to March 2013 to find out the effect of intercropping on the incidence of aphid and its subsequent impact on growth and yield of mustard and its pollinator honeybee population. The intercroppings were mustard (Brassica napus, Var. Bari Sarisha-7) with wheat (Triticum aestivum L.), onion (Allium cepa L.), garlic (Allium sativum L), coriander (Coriandrum sativum L.), radhuni (Trachyspermum roxburghianum) and gram (Cicer arietinum L.). Sole cropping of mustard was also grown to compare the effectiveness of intercropping system. The experiment was laid out in randomized complete block design (RCBD) with three replications.The overall result indicates that the intercropping of mustard with onion, garlic, coriander and rahuni decreased the incidence of aphid population on mustard and increased the abundance of visiting honeybee compared to sole cropping of (mustard). When aphid number (3.81) was increased in mustard + gram (T6) intercropping system, at that time pod formation/plants (24.78) and seed weight/plot (7.63) were decreased. On the other hand, when aphid number (2.99) was decreased, at that time, pod formation and seed weight/plot (9.87) were increased. It was also observed that, when honeybee population (72.65) was increased then pod formation, seed weight/plot was also increased. On the other hand, when honeybee population (47.12) was decreased then pod number/plants, and seed weight/plot were also decreased. A Thesis Submitted to the Department of Entomology, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE (MS) IN ENTOMOLOGY SEMESTER: JULY-DECEMBER, 2013 Sun, 01 Dec 2013 00:00:00 GMT http://localhost:8080/handle/123456789/1678 2013-12-01T00:00:00Z