Comparative yield performance study of some mustard mutants at Jamalpur region of Bangladesh

ABSTRACT

The present research was conducted at the farmer’s field of Jamalpur during Rabi season 2018-19 to investigate the growth and yield performance of mustard mutants. The experiment was arranged in a randomized complete block design consisting of two mustard mutants (viz. RM-18, RM-20, BARI Sarisa 17) as treatment and replicated thrice. All the growth, yield attributes and yield were substantially influence among the mustard mutants except the phenological parameters. Results of the experiment showed that the highest plant height inRM-20 (103.53 cm) and RM-20 was found better in respect of maximum seed yield (1.72 tha-1), number of branches (5.20). Besides this, BARI Sarisa 17 showed the maximum weight of thousand seed (4.03 g). Therefore, findings of this study suggested that RM-20 would be suitable for better productivity and recommended for cultivation at Jamalpur region in Bangladesh.

Key words: Yield, mustard, mutants.

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Characterization of shrimp aquaculture practices, analyzing on physicochemical parameters and it’s impact on south-western coastal Paikgacha upazila of Bangladesh

ABSTRACT

Shrimp is one of the export items in Bangladesh. The total production of shrimp and prawn has been raised from 1.60 lakh MT in 2002-03 to 2.54 lakh MT in 2017-18. Day by day, the production and promotion of shrimp aquaculture practices have increased by developing numerous programs and projects. This study was conducted on three shrimp culture practices system of Traditional, Improved traditional and Semi-intensive farming system in Paikgacha, Khulna District. Data were randomly collected from fish farmers of each culture practices through personal interviews. The culture period was typically four months from March to July for Penaeusmonodon (local name-Bagda). The optimal range of the physio-chemical parameters (Temperature, Dissolved oxygen, Biological Oxygen Demand, Salinity, Alkalinity, and Transparency) required to monitoring the health and increasing growth of shrimps. The average production from traditional shrimp farm, improved traditional and semi-intensive farm were approximately 100-150, 100-500 and 500 to 4000 kg/ha/yr. Based on the experiment as well as we found that the Semi-intensive shrimp cultural practice is more effective and it had proved that the physio-chemical conditions of Semi-intensive shrimp farming are comparatively standard than traditional and Improved traditional farming system.

Key words: Shrimp aquaculture practices, physiochemical parameters, impacts, management approaches

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এদেশে পরিবেশ বিজ্ঞান শিক্ষা ও গবেষণা শুরুর পূর্বে (১৯৮৯-৯১) বিজ্ঞানী সাত্তারের পরিবেশ বিজ্ঞান বিষয়ে ১১৩টি প্রকাশনা পরিচিতি

প্রফেসর ড. এম.এ. সাত্তার, ডিন, জীব বিজ্ঞান অনুষদ, বঙ্গবন্দু শেখ মুজিবুর রহমান বিজ্ঞান ও প্রযুক্তি বিশ্ববিদ্যালয়, গোপালগঞ্জে ২০১৬ সাল থেকে কর্মরত যেখানে বিভাগে তিনি একমাত্র শিক্ষক হিসেবে ২০১৬/১৭ সালে পরিবেশ বিজ্ঞান ও ডিজাষ্টার ম্যানেজমেন্ট বিভাগ প্রতিষ্ঠা করেন। তার আগে তিনি বাকৃবিতে ৪২ বৎসর শিক্ষকতা (১৯৭৩-২০১৪) করে কৃষি অনুষদের ডিন হিসেবে অবসরে যান। তার ১৯৯১-২০০২ সালে চেষ্টায় বাকৃবিতে ২০০২ সালে পরিবেশ বিজ্ঞান বিভাগ প্রতিষ্ঠা লাভ করে। তিনি এদেশে পরিবেশ বিজ্ঞান শিক্ষা ও গবেষণার অগ্রগতিতে আজীবন প্রত্যক্ষ জড়িত। মাটিতে ইউরিয়ার জীবন চক্র, ইউরিয়ার জৈব পদার্থ ও এনপির ক্ষয়/ঘাটতি তথা ইউরিয়া প্রয়োগের পাশাপাশি জৈব পদার্থ প্রয়োগ মৃত্তিকা পরিবেশ বিষয়ে মৌলিক আবিস্কারের মাধ্যমে ১৯৭২ সাল থেকেই এদেশে পরিবেশ বিজ্ঞান জগতে আত্মপ্রকাশ করেন। তিনি ৯.০ বৎসর (১৯৭৬-৮৪) ফিনল্যান্ডে পরিবেশ বিজ্ঞান শিক্ষা ও গবেষণায় ৪টি পিএইচডি সমমান ডিগ্রী অর্জন সহ অসংখ্য আন্তর্জাতিক প্রকাশনার মাধ্যমে বিশ্বে আন্তর্জাতিক খ্যাতি সম্পন্ন বিজ্ঞানীদের কাতারে চলে আসেন।

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An intensive research on confirmation of safe drinking water in South-Western Bagerhat district, Bangladesh

ABSTRACT

The study is an initiative study for natural hazards prone coastal Bagerhat district of Bangladesh. Under the present investigation two important water quality parameters such as TDS and EC were broadly measured collected from different water sources such as pond, deep tube well, supply water, jar water and such even rain water regard to use for drinking purposes. Water qualities estimated from all corners of ponds (East/West/North/South) and the variations by rain were also considered. The research study confirmed that the localities are enjoying the sound health in terms of consumption of safe drinking water through huge availability of safe surface, underground and rain water sources.

Key words: Safe drinking water, EC, TDS, coastal area, Bagerhat district.

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Effect of nitrogen doses and irrigation frequencies on cob yield of BARI hybrid maize-7

ABSTRACT

A field study was conducted to assess the interaction effects of irrigation and nitrogen rates on hybrid maize yield. The research was conducted during December 2013 to April 2014 at the farmer field Tabaria area of Natore District in Bangladesh. The experiment consists of (i) two irrigation treatments viz. no irrigation and three irrigation and (ii) two nitrogen levels viz. no nitrogen use and 230 kg Nha-1.The experiment was laid out in a split plot design with three replications having 12 unit plots with 20 m2 sized. The interaction effect of irrigations and nitrogen levels significantly influenced the yield attributes of BARI hybrid maize-7 except cob grain free and harvest index, where the yield and yield attributes increased with increasing irrigation and nitrogen levels in all cases.

Key words: Nitrogen, irrigation, yield, maize.

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Assessment of heavy metals contamination in road side soils along Mymensingh to Valuka highway

ABSTRACT

This study has been conducted in January 2019 to assess the heavy metal contamination in soils of road site from Mymensingh to Valuka focusing the vehicles emission run on highway. Sixteen (16) soil samples were collected consisting of road side traffic area soil and adjacent to road side near agricultural field soil (within) 100m. The samples were digested with acid mixture (HNO3:HClO4=2:1) and then the concentrations of four heavy metals Zn, Pb, Cr, and Cd were determined using Atomic Absorption Spectrophotometer (AAS). For assessing the contamination levels of heavy metals, contamination factors (CF), degree of contamination (Cd), index of geo-accumulation (Igeo) were measured comparing with the international standard. Elevated metal concentrations were found in road site soil samples. The geo-accumulation index (Igeo) indicated that the road was moderately polluted by Zn, moderately to strongly pollute by Pb, whereas field soils were free from Zn and Pb contamination. Cr and Cd were unpolluted in both types of soils. The values of contamination factor (CF) existed as Pb> Zn > Cd > Cr for the road side soil. The values of contamination factor (CF) existed for agricultural field soil ranked as Zn >Pb> Cd >Cr. The degree of contamination of all sampling sites show very moderate to low degree of contamination. Pollution load index calculated from the CFs indicated that Zn and Pb are the major pollutants in the studied road side soils along Mymensingh to Valuka highway.

Key words: Heavy metals, contamination, highway soil.

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