http://localhost:8080/handle/123456789/2751 2026-04-18T16:24:11Z 2026-04-18T16:24:11Z TALHA, MUHAMMAD ABU http://localhost:8080/handle/123456789/2838 2019-10-17T11:41:58Z 2007-06-01T00:00:00Z

MANAGEMENT OF WHITEFLY (Bemisia tabaci Gennadius) IN TOMATO TALHA, MUHAMMAD ABU A THESIS Submitted to the Dept. of Entomology 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 2007

2007-06-01T00:00:00Z MUSTAFIZ, SMRITI SULTANA BINTE http://localhost:8080/handle/123456789/1213 2019-10-01T06:23:22Z 2007-12-01T00:00:00Z

EVALUATION OF SOME ROTANICALS AS PEST MANAGEMENT PRACTICES AGAINST PEST COMPLEX IN TOMATO MUSTAFIZ, SMRITI SULTANA BINTE The present experiment was conducted to evaluate some botanicals as pest management practices against pest complex in tomato in the farm of Shcr-e-Bangla Agricultural University, Dhaka during the period from November 2006 to April 2007. The experiment consisted of 8 treatments such as T1: Neem leaf extract @ 0.5kg/L of water at 3 days interval; T2: Neem leaf extract @ 0.5kg/L of water at 7 days interval; T3: Neem oil @ 3.0rnl/1- of water at 3 days interval; T4: Neem oil @ 3.0mlIL of water at 7 days interval; '15: Garlic extract @ 0.5kgIL of water at 3 days interval; T6: Marsh Pepper extract @ 0.5kgIL of water at 3 days interval; T7: Marsh Pepper extract 0.5kgIL of water at 7 days interval and Tg: Untreated control. The lowest number (22.40) of white fly per plot was recorded from T3 treatment, while the highest number (145.00) of white fly per plot was recorded from untreated control. The lower average leaf infestation (3.19%) was recorded from the treatment T3 plots and the highest (15.77) leaf infestation was recorded from untreated control. The lowest % of infested fruit by weight (3.47%) was recorded from the treatment T3 plots and the highest % of infested fruit by weight (14.45%) was recorded from untreated control plots. The highest weight of fruit per hectare (66.80 t) was recorded from the treatment T3 plots and the lowest (56.86 t) weight of fruit per hectare was recorded from untreated control plots. The highest weight of healthy fruit per hectare (64.48 t) was recorded from the treatment T3 treated plots and the lowest (48.65 t) weight of healthy fruit per hectare was recorded from untreated control plots. Considering the controlling of tomato fruit borer highest benelit cost ratio (2.82) was recorded in the T.1 treated plots (application of Neem oil at 3 days interval) on the other hand the lowest cost benefit ratio (0.06) was recorded in T2 treated plots. Among the different treatments Neern oil application at 3 days interval was most effective than other treatment. The botanieals which applied at 3 days interval were effective than those applied at 7 days interval in conti-olling insect pests of tomato A Thesis Submitted to the Department of Entomology Sher-e-Barrgla Agricultural University, Dhaka, in partial fulfilment of the requirements for the degree of MASTER OF SCIENCE (M.S.) IN ENTOMOLOGY SEMESTER: JULY- DECEMBER, 2007

2007-12-01T00:00:00Z HAQUE, ABUL KASHEM MD. MOLLAH NAZMUL http://localhost:8080/handle/123456789/1212 2019-10-01T06:23:42Z 2007-12-01T00:00:00Z

COMPARATIVE EFFICACY OF SOME CHEMICAL INSECTICIDES AND BOTANICALS AGAINST CHILLI FRUIT BORER (Helicoverpa armigera) HAQUE, ABUL KASHEM MD. MOLLAH NAZMUL The study was carried out in the experimental field of Shcr-e-Bangla Agricultural University, Dhaka, Bangladesh during the period from February to June 2007 to determine of the comparative efficacy of some chemical insecticides and botanicals against chilli fruit borer. The experiment comprised with twelve treatments and among them first six (T1 ]'6) were the application of insecticide and others (17-'l'l i) were botanicals. Treatments were 1,: Sumicidin @6.0 ml/2 litre of water at 7 days interval; T2: Malathion @6.0 ml/2 litre of water at 7 days interval; T3: Ripcord @3.0 ml/2 litre of water at 7 days interval; 14: Marshal @6.0 ml/2 litre of water at 7 days interval; T5: Diazinon @ 6.0 ml/2 litre of water at 7 days interval; l: Suntal@ 2.5 nil/2 litre of water at 7 days interval; '1'7: Allamanda leaf extract @0.5 kg/2 litre of water at 7 days interval; T8: Neem leaf extract @ 0.5 kg/2 litre of water at 7 days interval: T1: Garlic clove extract @ 0.5 kg/2 litre of water at 7 days interval; l j : Ginger rhizome extract @ 0.5 kg/2 litre of water at 7 days interval; T, i : Onion bulb extract @ 0.5 kg/2 litre of water at 7 days interval; 1,2: Untreated control. In total cropping season the lowest percentage of fruit infestation in number (5.72%) was recorded from the treatment 14 which was statistically similar (6.22%) with the treatment T8 and the highest (24.90%) was recorded from untreated control treatment which was closely followed (17.39%) by the treatment T5 and Ti (16.48%) and T10(15.37%). Fruit infestation reduction over control in number estimated as the highest value (77.03%) was recorded from the treatment 14, while the lowest (30.16%) was recorded from treatment. In the cropping season the lowest percentage of fruit infestation in weight (9.69%) was recorded from the treatment 14 which was statistically similar (10.03%) with the treatment Ig. On the other hand , the highest (26.44%) fruit infestation was recorded from untreated control treatment which was closely followed (20.40%) by the treatment Ti and i, (19.56%) and I,o(19.05%). Fruit infestation reduction over control in weight was estimated the highest value (63.35%) , recorded from the treatment 14, while the lowest (22.84%) reduction of fruit infestation over control was from T5 treatment. Highest weight of fruit yield (30.60 t/ha) was recorded from the treatment 14 and the lowest yield (24.48 1./ha) of fruit was recorded from untreated control treatment. Among different treatments as a whole botanicals (li-li i) were more effective than the chemicals insecticides (T,-T6). A Thesis Submitted to the Department of Entomology Sher-e-Barrgla Agricultural University, Dhaka, in partial fulfilment of the requirements for the degree of MASTER OF SCIENCE (M.S.) IN ENTOMOLOGY SEMESTER: JULY- DECEMBER, 2007

2007-12-01T00:00:00Z KHATUN, MST. FATEMA http://localhost:8080/handle/123456789/1211 2019-10-01T06:23:59Z 2007-12-01T00:00:00Z

BIOEFFICACY OF SOME CHEMICAL AND BOTANICAL INSECTICIDES AGAINST JASSID, AMRASCA DEVAS TANS ON BRINJAL AND THEIR IMPACT ON NATURAL ENEMIES KHATUN, MST. FATEMA An experiment was conducted at the experimental farm of Sher-e-Hangla Agricultural University Dhaka, during Feb-Aug 2007 to evaluate some chemicals and botanicals against jassid. Arnrasca devastans on brinjal and their impact on natural enemies. Nine treatments such as Admire 200S12, Ripcord IOEC, Marshal 20EC. Actara 24WG. Neern seed kernel, Neem oil -Trix, Trix, Mahua leaf extract and untreated control plots were used in Randomized Completely H lock Design (RCI3D) with 3 replications. The population of jassid adult gradually increased with plant age irrespective of treatments. The lowest population of adult (2.36 before fruiting stage and 9.80 during fruiting stage) and nymph (0.73 before fruiting stage and 1.67 during fruiting stage) per 5 lcaves/ plant was observed in Marshal 20EC treated plot. The yield contributing characters such as. number of leaves and branches/plant, number of fruits/plant, length, diameter and weight of individual fruit were found the highest in Marshal 20EC @ 2 mI/I treatments. The same treatment gave the highest yield (29.58 t/ha) and increased 44.65% yield over control. The maximum net return (330071 Tk./ha) and the highest benefit cost ratio (2.28) were also observed in Marshal 20EC. Admire 200Sl1 showed the similar performance in all regards against jassid on brinjal. Ripcord IOEC also gave the satisfactory results in reducing jassid infestation and increasing brinjal yield. Among the botanieals tested, Neem oil f Trix and Neem seed kernel showed satisfactory control of jassid on brinjal. Marshal 20FC. Admire 2005;L and Ripeord IOEC reduced more than 80% population of spidcr and lady bird hecile. Botanieals also decreased the population of spider and lady bird beetle over control but their effect was moderate. A Thesis Submitted to the Department of Entomology Sher-e-Barrgla Agricultural University, Dhaka, in partial fulfilment of the requirements for the degree of MASTER OF SCIENCE (M.S.) IN ENTOMOLOGY SEMESTER: JULY- DECEMBER, 2007

2007-12-01T00:00:00Z