9-1-7 MANAGEMENT OF YELLOW VEIN MOSAIC VIRUS (YVMV) THROUGH ACmix INSECTICIDE SPRAY AT DIFFERENT GROWTH STAGES OF OKRA


Md. Hasibur Rahman, Md. Belal Hossain, F. M. Aminuzzaman, Md. Shariful Islam, Suraiya Jitu

Corresponding Author e-mail: mbhossainsau@yahoo.com/ dr. mbhossain@sau.edu.bd


Abstract

A field experiment was conducted at the Field Laboratory, Department of Plant Pathology, Sher-e- Bangla Agricultural University, Dhaka-1207, during March to July, 2016 to evaluate the performance of ACmix against Yellow vein mosaic virus (YVMV) of okra. The variety ‘green finger’ was used. The treatments were T0 (control/no spray), T1 (1 spray), T2 (2 sprays), T3( 3 sprays), T4( 4 sprays), T5 (5 sprays), T6(6 sprays). The insecticide was sprayed at 20 DAS and continued with 5 days interval. In case of insecticide application in six treatments, the lowest percent disease incidence was recorded in T6 (15.98%) at 95 DAS. The highest percent disease incidence was found in T0 (88.21%). In case of morphological parameters; number of leaves, flowers and fruits per plant was recorded in T6 (50.00, 29.00, 28.33 respectively) up to last harvesting. In case of yield and yield contributing characters significant variaTION was observed among the treatments. The highest yield per plant and also per plot was recorded in T6 (6 sprays) treatment (0.83kg/plant, 15.44 kg/plot). The highest plant height was recorded in T6 (6 sprays). In case of physiological features the highest chlorophyll content was measured in T6 (57.93 μ mol m-2s-1). Plant height and yield showed the positive relationship with chlorophyll content and percent disease incidence showed negative relationship with chlorophyll content. It was also observed that when percent disease incidence increased, the yield of okra was also decreased. However, considering the economic conditions/cost-benefit ratio T4 (4 sprays) was the best in case of all measuring parameters.

Keywords: Okra, YVMV, Whitefly, Management, ACmix



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9-1-6 RESPONSE OF SUMMER TOMATO TO DIFFERENT PLANT GROWING STRUCTURES IN THE ROOFTOP GARDEN



Titly Kaiyum Talukder, Md. Mizanur Rahman, Suraya Parvin, Nijhum Kaiyum Talukder, Kamal Uddin Ahamed, Mohammad Mahbub Islam


Corresponding author’s Email: titly.k.talukder@gmail.com

Abstract

An experiment was conducted to examine the effect of different growing structures on summer tomato in rooftop garden during June to October 2016. In this experiment three different kind of growing structures were used. The growing structures were; earthen pot (E), concrete bed (C) and wooden bed (W). The experimental results showed that plant growing structures significantly influenced to change morpho-physiology, yield contributing characters and fruit yield of summer tomato. The wooden structures (W) increased the plant height (125.6 cm), number of leaves plant-1 (98.81), number of branches plant-1 (15.63), leaf SPAD value (52.14), number of flower cluster plant‑1 (13.56), flowers plant‑1 (43.38) and fruit plant-1 (8.75), the highest individual fruit weight (16.54g) and fruit yield plant-1 (146.6g). In contrast, the leaf water loss as measured in percent of fresh weight was minimum (8.32) at earthen pot whereas it was maximum (9.15) at concrete bed. Therefore it may be suggested that wooden structure on rooftop garden increased yield of summer tomato by improving morpho-physiological and yield contributing characters.

Key words: Rooftop garden; Summer tomato; Plant growing structures; Yield.


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9-1-5 EFFECT OF SUBMERGENCE DURATIONS ON GROWTH PARAMETERS AND CHLOROPHYLL CONTENT OF HYBRID AND INBRED AMAN RICE



K.U. Ahamed, N. Akhter, M. Akter and M.M. Rahman

Corresponding authour’s Email: Mmr_abac@yahoo.com

Abstract

An experiment was conducted at the research farm of Sher-e-Bangla Agricultural University (SAU), Dhaka, Bangladesh to study the effect of submergence durations on growth parameters and chlorophyll content of some hybrid and inbred Aman rice. The experiment was laid out in factorial randomized complete block design. The treatments consisted of four submergence durations (S0 = Control or no submergence, S1 = Submergence for 6 days, S2 = Submergence for 10 days, S3 = Submergence for 14 days) and six Aman rice varieties (hybrids: BRRI Hybrid dhan3, ACI Shankar and Heera-2; inbreeds: BRRI dhan34, BRRI dhan46 and BRRI dhan51 with BRRI dhan46 as check). The experimental results showed that submergence durations and rice varieties differed significantly on different growth parameters and chlorophyll content. In all the varieties, the control treatment showed the highest plant height, number of tillers, root dry matter, stem dry matter, leaf dry matter, panicle dry matter, total dry matter and chlorophyll content which gradually decreased with increasing submergence duration from 6 days to 14 days. The greatest reduction in different growth parameters and chlorophyll content due to submergence for 14 days. The varieties BRRI dhan51 and BRRI dhan46 proved to be relatively submergence tolerant compare to others. On the contrary BRRI dhan34, ACI Shankar and Heera-2 were found to be susceptible to submergence.

Key words: Submergence, hybrid and inbred Aman rice, growth parameters and chlorophyll.

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9-1-4 EFFECT OF PREPARED PROBIOTICS INSTEAD OF HARMFUL GROWTH PROMOTERS IN BROILER PRODUCTION TO AVOID THE HUMAN HEALTH HAZARD



M. J. Alam and Z. Ferdaushi
Corresponding author’s Email: jangalam@yahoo.com

Abstract


Effects of developed probiotics on growth performance and blood parameters were evaluated. To achieve the objectives, 480 unsexed Cobb 500 broiler chicks were raised over 28 days. Chicks were wing-banded, weighed individually and randomly allocated into four equally major groups each having three replicates. Chicks of group T1 (control group) were fed the starter and finisher diets that did not supplemented with probiotics or antibiotic. The chicks of groups T2 was fed the control starter and finisher diets supplemented with antibiotic. The control group- T1 fed a basal diet (unsupplemented-control), whereas the antibiotic and experimental groups fed the same basal diet but supplemented with antibiotic group-T2 containing 14 mg/kg of Flavomycin, probiotic group-T3 (only bacteria) provide 1 ml per litre water and probiotic group-T4 (bacteria & yeast) containing 1 ml/L of probiotic in drinking water. Weekly body weight, feed consumption and feed conversion were measured. Meat composition and sensory parameter were evaluated. Blood parameters at 4 weeks of age including red blood cell count (RBC), white blood cell (WBC), hematocrit (HCT), haemoglobin (Hb), blood glucose level (BGL) and blood cholesterol level (BCL) were determined. Moreover, antibody titre and intestinal microflora were measured. All birds were kept under similar environmental, managerial and hygienic conditions. Probiotic supplementation significantly increased the body weight and daily weight gain of broiler chicks at 28 days (p 0.05) compared to the control. It can be concluded that use of prepared probiotic resulted in improved growth performance, carcass composition, gut lactobacilli, reduced serum cholesterol and developed antibody against ND in broiler chickens. Moreover, supplementation of the probiotic to broilers had no detrimental effect as antibiotic. Therefore, usage of these probiotic bacteria as antibiotic alternative in poultry nutrition can be recommended. 

Keywords: Blood parameters; Broiler; Growth performance; Probiotic


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9-1-3 MORPHOLOGICAL CHARACTERS AND YIELD OF MUSTARD AS INFLUENCED BY DIFFERENT SOWING TIMES


Md. Mizanur Rahman, Mahbuba Siddika and Mohammad Mahbub Islam*

Corresponding author’s Email: mahbubislam_sau@yahoo.com

Abstract

The experiment was conducted during the period from October, 2016 to March, 2017 in the experimental field of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka to find out the morphological characters and yield of mustard as influenced by different sowing. The experiment comprised of different sowing times (4) as a treatment, such as S1: 25 October 2016; S2: 05 November 2016; S3: 15 November 2016 and S4: 25 November 2016. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. Data on different morphological change and seed yield of mustard were recorded and statistically significant variation was observed for different treatment. For different sowing dates, the maximum number of seeds siliqua-1, length of siliqua, seed and stover yield (24.23, 4.77 cm, 2.18 and 3.38 t ha-1 respectively) was recorded from S1 while the minimum number of seeds siliqua-1, length of siliqua, seed and stover yield (20.27, 3.87 cm, 1.43 and 2.50 t ha-1 respectively) was found from S4 treatment. Sowing on 25 October 2016 during the study period was more potential in regards to yield contributing characters and yield of mustard.

Key words: Mustard, morphological characters, yield, and influence.



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9-1-2 GROWTH AND YIELD RESPONSE OF BELL PEPPER (Capsicum annuum) TO THE APPLICATION OF KAOLIN AND 4-CPA UNDER NET PROTECED CONDITION



Ashrafunnesa, S. Akter, M. R. Monir and M.H.Kabir* 
       *Corresponding author: Email:  kabirsau@yahoo.com

Abstract

An experiment was conducted at the Horticultural Farm of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh to determine the response of nylon net, kaolin and plant growth regulator 4-Chlorophenoxyacetic acid (4-CPA) on growth and yield of capsicum. The experiment consisted of two factors: Factor A: Use of nylon net and kaolin as P0: Open Condition (control); P1: Kaolin Spray; P2: Nylon net condition; P3: Use of nylon net + kaolin and Factor B: Application of 4-CPA as H0: Control (water spray), H1: 4-Chloro Phenoxy Acetic Acid (4-CPA) @ 4000 ppm. Two factorial experiments were laid out in a Randomized Complete Block Design with four replications. In case of nylon net and kaolin, the maximum yield (48.06 t/ha) was attained from P3, while the minimum yield (18.58 t/ha) from P0. For plant growth regulator 4-CPA, the highest yield (34.80 t/ha) was recorded from H1, whereas the lowest (29.20 t/ha) from H0. Due to the interaction effect of nylon net, kaolin and 4-CPA, the highest yield (50.55 t/ha) was found from P3H1, while the lowest yield (16.89 t/ha) from P0H0.

Keywords: Bell Pepper, kaolin, 4-CPA, nylon net.

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9-1-1 BIODIVERSITY OF INSECT PESTS AND OTHER ARTHROPODS IN CABBAGE FIELD USING TRAP CROPS AND INTERCROPPING SYSTEM




K. T. KOBRA, M. R. ALI & T. AKTER*

                 *Corresponding author’s e-mail: tahmina_sauento@yahoo.com

Abstract

An experiment was conducted in the field of Sher-e-Bangla Agricultural University farm, Dhaka, Bangladesh during the period from October 2016 to February 2017. The experiment consisted of twelve treatments such as T1: Cabbage plus Mustard; T2: Cabbage plus Radish; T3: Cabbage plus Onion; T4: Cabbage plus Garlic; T5: Cabbage plus Coriander; T6: Cabbage plus Mustard plus Onion; T7: Cabbage plus Mustard plus Garlic; T8: Cabbage plus Mustard plus Coriander; T9: Cabbage plus Radish plus Onion; T10: Cabbage plus Radish plus Garlic; T11: Cabbage plus Radish plus Coriander; T12: Sole Cabbage. In this study, the mustard and radish were used as trap crops. On the other hand, the onion, garlic and coriander were used as intercrops. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications. The overall result indicated that the trap crop and intercrop combination system with cabbage decreased the incidence of insect pests of cabbage whereas, increased the abundance of beneficial arthropods compared to sole cropping of cabbage. The highest number of beneficial arthropods per plot such as natural enemies viz. lady bird beetle (4.83), staphylinid beetle (1.49), hover fly larvae (3.92), dragon fly (1.68), ground beetle (0.61), ant (3.10), spider (1.11) as well as pollinators viz. honey bee (31.10), carpenter bee (1.30) and hover fly (5.22) were also observed in T8 treatment. This treatment also showed the highest number of insect species and diversity index in early, mid and late vegetative stages).

Keywords: Biodiversity, Arthropods, Cabbage, Trap Crops, Intercropping System.

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