8-2-10-INCIDENCE OF RED PUMPKIN BEETLE AND FRUIT FLY ON DIFFERENT VARIETIES OF SWEET GOURD



S. Ahmed, N. Akhter* and M. A. Latif
*Corresponding author E-Mail: nurmohalsau@yahoo.com

Abstract

The study was conducted in the central farm of Sher-e-Bangla Agricultural University (SAU), Sher-e-Bangla Nagar, Dhaka during the period from April to July, 2015 to find out the incidence of red pumpkin beetle and fruit fly on different varieties of sweet gourd. Seven varieties of sweet gourd e.g., Sweet Queen, Pronoy F1 (hybrid), Thai Sweet, Big Boss, Monika, Shokti, and Syndrila were used as treatments. The study was laid out in Randomized Complete Block Design (RCBD) with four replications. Data on infestation levels at different growth stages were recorded to find out the tolerant variety of sweet gourd for better production. The highest infestation of red pumpkin beetle (RPB) was found in Thai sweet (32.00 %) variety followed by Pronoy F1 (20.00 %) variety. On the other hand the lowest infestation was found in Big Boss (5.00 %) and Shokti (5.00 %) varieties. Big Boss and Shokti varieties were found more tolerant to the RPB than the other varieties. Highest infestation (23.00 %) was found in Thai sweet and Pronoy F1 caused by cucurbit fruit fly and the lowest infestation was found in Shokti (2.00 %) variety. Shokti variety was more tolerant to the red pumpkin beetle and cucurbit fruit fly than the other varieties and it encouraged growth giving higher yield (25.23 t/ha).

Key words: Sweet gourd, pumpkin beetle and fruit fly.

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8-2-9-EVALUATION OF BOTANICALS AGAINST MANGO MEALYBUG


S. M. A. Islam, N. Akhter* and M. A. Latif
*Corresponding author’s E-Mail: nurmohalsau@yahoo.com


Abstract

The study was conducted at Entomology laboratory of Sher-e-Bangla Agricultural University (SAU), Dhaka during the period from November, 2013 to May, 2014 to study the botanical management of mango mealybug. In laboratory, leaf extraction of neem, korobi (Oleander Nerium), marigold (Tagetes erecta), nishinda (Vitex negundo), tobacco (Nicotiana tabacum), tomato (Solanum lycopersicum) and neem (Azadirachta indica) seed kernel (NSK) extract against 1st, 2nd, 3rd instar nymph and adult female of mango mealybug were evaluated. After 24, 48, 72, 96 and 120 hours (h) of post treatment NSK extract gave the highest mortality of 5, 10, 15, 13.3 and 10%, respectively. Similar trend of mortality was also found in spraying botanical extracts. Mortality in dipping method of 2nd instar mealybug was found 23.33% after 96 h of post treatment but declined mortality (10%) was found after 120 h of post treatment. In spraying method highest mortality of 23.33% was found after 48 h of post treatment. Mortality of 3rd instar nymph was found lower than 2nd instar nymph and found highest (10%) after 96 h of post treatment in dipping and 11.67% after 48 h in spraying. 1st instar and 2nd instar mango mealybug was more vulnerable than 3rd instar against botanicals. Up to 120 h of treatment the highest mortality was found in NSK extract followed by neem leaf extract. The lowest mortality was found in control where no botanicals were applied.

Key words: Botanical and Mango mealybug.

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9-2-9 PERFORMANCE OF TWO EXOTIC WHITE MAIZE HYBRIDS AS INFLUENCED BY VARYING SOIL MOISTURE REGIMES DURING SEEDLING TRANSPLANTATION

Md. Jafar Ullah*, Md. Mahirul Islam, Kaniz Fatima, Md. Sohel Mahmud and M.A.Mannan

*Corresponding author, E-mail: jafarullahsau@gmail.com

Abstract



The trial was initiated on Nov 01 of 2017 in randomized complete block design with three replications. Six treatments combining two varieties (PSC-121= V1 and Yangnuo-3000=V2), three moisture regimes (field capacity at sowing of the sown treatment = FC, wetting surface up to saturation of the soil at transplanting = WT and flooding at transplantation = FL) and two methods of planting (sown and transplanting). As such the six treatment combinations were V1FC, V2FC, V1WT, V2WT, V1FL and V2FL. Results showed that Transplanting had no remarkable effect on plant height (205-225 cm) and number of leaves per plant (14-16). However significant effect was seen on stem circumference at the base was affected showing reduced value in the v1WT (5.60 cm), distance of cob position from the base showing the farthest with V2FC (102 cm) and the nearest (73 cm.) with v1WT. Cob bearing node from the base was also affected showing cobs at the nearest (7.33) with v1WT while, farthest with V2FC (9.5). Treatments also showed wide ranges of cob length (15.00-17.78 cm), cob circumference (13.83-16.87), number of grain rows per cob (12.00-13.33) and number of grains per grain rows (27.89-36.33). In the individual ear a wider range in number of grain (360-482), grain weight (82.06-121.07 g), shell (rachis) weight (11.00-29.00 g) and chaff (husk) weight (6.4-13.78 g) was also observed. There was also wider ranges in per plant ear weight (99.50-162 g), stover dry weight (81.50-139.52 g) and total dry weight (194-296 g). Treatments significantly affected 100 seed weight (20.67-32.67 g), seed yield (6.565-10.048 t/ha) and harvest index (36.32-49.96%). The highest seed yield was observed with the treatment v1FC which was attributed to the heaviest seed of this treatment (32.67 g) and number of grains per ear (483). V2 FL had second highest seed yield (8.374 t/ha) showing 20% reduced seed yield due to transplantation. V1 out yielded V2 showing 10% higher yields which was attributed to bolder seeds of V1 and 12% higher harvest index than V2. V1 had 16% heavier grain weight per cob compared to V2. However, this variety had also over 200 and 80% heavier shell and chaffs respectively compared to that of V2. Likewise FC had 20 and 7% higher seed yields as compared to those of WT and FL. Transplanting remarkably reduced 100 seed weight (30%) which was attributed to the reduced seed yields due to seedling transplanting.


Keywords: White maize, seedling transplantation, soil moisture.

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J. Expt. Biosci.9(2) July 2018

9-2-8 PLANTING GEOMETRIC EFFECT ON YIELD OF RAPESEED AND MUSTARD VARIETIES

Mst. Rifat Jahan, Tania Sharmin, Zannat Akhter, Md. Abdullahil Baque
and H.M.M. Tariq Hossain*

*Corresponding author: hmmtariq@yahoo.com

Abstract

The study was carried out at the Agronomy Field of Sher-e-Bangla Agricultural University (SAU), Dhaka, Bangladesh during November 2015 - February 2016 to evalute the planting geometric effect on yield of rapeseed and mustard varieties. The treatment comprised of three varieties viz. BARI Sarisha-11, BARI Sarisha-14 and BARI Sarisha-17 with five planting geometry viz. Random geometry, 25 cm × 5 cm, 30 cm × 5 cm, 35 cm × 5 cm and 40 cm × 5 cm respectively. The seed yield varied significantly among varieties. As varietal effect, BARI Sarisha-11 produced the maximum seed yield, stover yield and biological yield at harvest. The planting geometry affected significantly on the seed yield, stover yield, biological yield and harvest index. In the case of planting geometry 30 cm × 5 cm showed highest biological yield but 25 cm × 5 cm resulted with highest seed yield and harvest index only. Although the wider spaced plants appeared with vigorous growth and yield but failed to produce maximum seed yield due to lack of optimum plant population. Among the combination of treatments, BARI Sarisha-11 ranked top in seed yield (2.15 t ha-1), stover yield and biological yield when it was sown with 35 cm x 5 cm geometric arrangement.

Keywords : Brassica spp., Varieties, Planting geometry, Yield.

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J. Expt. Biosci.9(2) July 2018

9-2-7 Off Season Seed Yields of BJRI Tossa Pat-7 and BJRI Tossa Pat-5 as affected by sowing dates and locations

Jannatul Ferdous and M. Mahbubul Islam*

*Corresponding author email: mahbub_agronomy@yahoo.com

Abstract

The experiment was conducted at two locations; Manikganj and Jessore to determine seed yield performance of two tossa jute varieties (BJRI Tossa Pat-7 and BJRI Tossa Pat -5) sown at five sowing dates viz., 30 July, 15 August, 30 August, 15 September and 30 September during 2016-17. The experiment was laid out in RCB design with three replications. The cultivar BJRI Tossa Pat-5 was used as control. Results revealed that BJRI Tossa Pat-7 yielded higher at Manikganj (766.67 kg ha-1) which was 13% higher than that as was obtained at Jessore (678.33 kg ha-1. The respective seed yield as was shown by BJRI Tossa Pat -5 at these two sites were 653.87 and 584.67 kg ha-1. The higher seed yield of the BJRI Tossa pat -7 was attributed to higher values of seed weight per plant (5.46-5.85 g) as compared to the BJRI Tossa pat-5 (3.62-3.80 g). BJRI Tossa Pat-7 sown on 15th and 30th August at Manik Gonj showed significantly higer seed yields (989-995 kg) compared to those (1045 and 973.33 kg) of BJRI Tossa Pat-7 and BJRI Tossa Pat-5 sown at Jessore. BJRI Tossa Pat-7 sown on 15th and 30th August at Manik Gonj had also significantly higher values in yield attributes such as number of pods/plant (34.9-37.77), seeds/pod (179-185) and seed weight per plant (7.03-9.23 g). The lowest seed yield (298.33 kg) was obtained BJRI Tossa Pat-7 sown at Jessore on 15th September which was attributed to the lowest values number of pods per plant (21.17-26.43), seeds/pod (148-161) and seed weight per plant (4.43 – 6.44 g). 1000 seed weight and germination % significantly varied at Manikgonj while these two seed attributes along with seed moisture after harvest was not significantly varied due to the treatments. At Manik Gonj the heaviest seeds (1.94 g/1000) was obtained with v2s3 and significantly higher germination (89-92.67%) were obtained with v2s2 and v2s3 treatments.

Keywords: Jute, sowing date, seed production, yield, quality, location

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J. Expt. Biosci.9(2) July 2018

9-2-6 PERFORMANCE OF NPKS AND ORGANIC MANURES ON THE GROWTH, YIELD AND NUTRIENT CONCENTRATION IN BRRI Dhan29

Md. Shahadat Hossain*, Md. Azizur Rahman Mazumder, Md. Abdur Razzak, Muhammad Abu Talha

*Corresponding author’s email: talhasau@yahoo.com

Abstract

The experiment was conducted in the Farm of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during the period from December 2012 to May 2013 to know the effect of fertilizers and manures on the yield and nutrient concentration in BRRI dhan29. The experiment comprised eight levels of fertilizers plus manures, such as T0: Control, T1: N120P25K60S20Zn2 (Recommended dose), T2: 50% NPKSZn + 5 ton cowdung ha-1, T3: 70% NPKSZn + 3 ton cowdung ha-1, T4: 50% NPKSZn + 5 ton compost ha-1, T5: 70% NPKSZn + 3 ton compost ha-1, T6: 50% NPKSZn+ 3.5 ton poultry manure ha-1 and T7: 70% NPKSZn + 2.1 ton poultry manure ha-1 were used. At the harvest, the yield parameters and total yield were recorded. The yield contributing characters and yields were significantly affected by level of fertilizers and manures. The highest grain yield and straw yields were found from recommended dose of fertilizer though it was statistically similar to 70% NPKSZn+2.1 ton poultry manure/ha treatment and lowest in control treatment. The grain nutrient concentrations of BRRI dhan29 were significantly affected by the application of fertilizers and manures. The higher grain nutrient concentrations were found in the treatments where fertilizers were used in combination with poultry manure. The higher concentrations of grain K and S were found in the treatments where fertilizers were used in combination with poultry manure.

Keywords: Organic manures, fertilizers combination, BRRI Dhan29.


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J. Expt. Biosci.9(2) July 2018



9-2-5 PERFORMANCE OF SUMMER TOMATO AS INFLUENCED BY FOLIAR APPLICATION OF KAOLIN AND MICRONUTRIENTS AT DIFFERENT MOISTURE LEVELS

S. Akter, Ashrafunnesa, M. R. Monir and M.H.Kabir*

*Corresponding author: Email kabirsau@yahoo.com

Abstract

A pot experiment was carried out at Horticulture Farm, Sher-e-Bangla Agricultural University, Dhaka during the period from May 2015 to October 2015. The two factors experiment was laid out in Complete Randomized Design (CRD) with three replications having nine treatment combinations with different levels of kaolin and micronutrients at different moisture levels as I0=100% ET(evapotranspiration) irrigation, I1= 80% ET irrigation and I2 =60% ET irrigation. And F0= control (spraying tap water only), F1: Spraying of kaolin 2% solution and micronutrients (B, Mn & Se) @ 50 ppm for each of the nutrient solution. F2: Spraying of kaolin 4% solution and micronutrients (B, Mn & Se) @ 100 ppm for each of the nutrient solution. Application of kaolin and micronutrients at different irrigation levels showed significant variations on most of the parameters. The best result was found from the treatment combination I1F2 with the maximum yield (1.43 kg/plant) and best quality (rich in Vitamin-C, and TSS) of tomato.

Keywords: kaolin, micronutrients, irrigation levels.


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J. Expt. Biosci.9(2) July 2018
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