Combined effect of fertilizer and green manures on the performances of transplant aman rice

ABSTRACT

In 2014 July to December field experiments on transplant aman rice cv. BR11 under different levels of chemical fertilizers and green manures Dhaincha (Sesbania aculeata) and Mimosa invisa were conducted at Sher-e-Bangla Agricultural University, Dhaka. Crop growth dynamics, yield attributes and yields were evaluated against the response of aman rice to the treatments. The treatments comprised two factors e.g. factor A: level of fertilizers (0, 50, 75 and 100% of recommended dose of fertilizer-RFD) and factor B: levels of green manures management (0, 5 and 10 tha-1, incorporated 1 and 15 days before transplanting). The experiments were carried out following split plot design with three replications. Recommended dose of fertilizers- N = 83, P = 20.96, K = 36.52, S = 11 and Zn = 1.5 kgha-1were applied in the form of Urea, Triple Super Phosphate (TSP), Muriate of Potash (MoP), Gypsum and Zinc sulfate, respectively. Sixty-day dhaincha and Mimosa invisa were incorporated before aman transplantation. Significantly higher grain yield was found due to F2G2 followed by F3G2, F1G1, F2G4 and F3G3. Plants of the control plot had lowest yield; It is noted here that perhaps Mimosa invisa @ 10 t ha-1 along with 75% RFD (F2G2) had balanced fertilizer effect on plant for its optimum growth, development and yield.

Key words: T. Aman Rice, Fertilizer, Green manure

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Universal guideline for developing ordinance on university research co-ordination division

ABSTRACT

University is known in the global village for its two objectives (1) teaching and research. Without research and publications-university teaching position is useless/valueless or worthless. The more the research, the more the publications, the more the honor and respect for the university teachers. Usually, university demands 20-30% teaching and 70-80% research from dedicated teachers and no alternatives. Teachers can involve himself/herself in research through supervision of master and PhD students and national and/or international research projects including projects through Mother University. Without significant contribution/publication, it is difficult to involve in the international research projects. But it is easy for most teachers for involvement in own university research project. For proper distribution, management and smooth running the research projects university primarily requires a research division or department like a separate unit/cell. Such research division/Dept./cell must properly handle the internal university research projects through a sound ordinance [that can be changed when necessary] for proper distribution, monitoring and evaluation including submission of bill vouchers and reports. Without strong research division/cell, university research system of teachers may not run properly. Here author’s wide experiences were applied and established a sound ordinance for building/developing a strong research division/Dept./cell, and this can be used as universal challenge for proper managing the university research projects to the teachers. Moreover, under such guideline, corruption of money in project work/research can be largely omitted/avoided. Finally, every year some good research achievements must come out for the university as national and/or international success/goal.

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Assessing of potential impacts and framing of mitigation measures for bridge construct over Dhaleshwari river, Tangail, Bangladesh

ABSTRACT

The study was conducted to assess the environmental impacts on proposed Golchattor Bridge is planned for construction over the River Dhaleshwari at Tangail district. Primary data were collected from field survey, focus group discussion (FGD), questionnaire survey (QS) and key informant interview (KII), whereas secondary data were collected from different books, journals, published documents of LGED and DoE. The result found that the air quality and noise level did not exceed the Bangladesh standard, and surface water quality was also within the permissible limit. During the construction and operation phase of the proposed bridges, the main environmental issues are air and dust pollution, noise and vibration, solid and hazardous waste, liquid waste discharge, etc. The study also depicted that risk of contamination in soils, groundwater and surface water from liquid waste and leaks of hazardous materials during handling, transportation and storage at the site. During the operation phase, the ambient air and noise quality may be affected and a risk of increase in road traffic and road accident. Magnitude of impact matrix in project activities at the pre-construction, construction and operation stage are as 1.19, 0.96 and 0.94 where pre-construction, construction and operation impact is low. The effective implementation of EMP and allegiance with the Local Government Engineering Department assists in minimizing the environmental impacts to acceptable levels.

Key words: EIA, Dhaleshwari River, mitigation, EMP, Bangladesh.

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Saline tolerance of vine vegetable crops grown in southern coastal region for nutritional security

ABSTRACT

A study was conducted on saline tolerant vegetables with their mineral constituents for nutritional security during July 2020 to June 2021. Edible portions of bottle gourd, sweet gourd, sponge gourd, snake gourd and ridge gourd were collected from three selected locations of Borguna and Patuakhali districts. The locations were Sawdagarpara of Borguna district as well as Pakhimara of Khepupara upazilla and Dumki of Patuakhali district. It is noted that the soils of Borguna generally contains high saline in dry season; but during the sampling period the soil at Sawdagarpara observed moderately saline (EC value 6.2 dS m-1) and this might be due to high rainfall during the study year. The vegetable were analyzed for P, K, Ca, Mg and S. In saline area cooperatively lower accumulation of P and higher accumulations of K, Ca, Mg and S were found in most of the vegetable than that of non-saline area. Therefore, the discussed vegetable could be grown in saline area for sufficient mineral compositions. Considering the achieved findings the studied vegetables can tolerate moderate salinity (soil EC value up to 6.2dSm-1) and they can be recommended to grow commercially in the study area for nutritional security. The trend of minerals accumulation in most of the vegetable was Ca>Mg>P>K>S. On the basis of total minerals content the trend of vegetable was found as bottle gourd>ridge gourd>snake gourd>sponge gourd> sweet gourd. 

Key words: Salinity, vine vegetable crops, coastal region

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Sattar: Pioneer on food safety measures education and research in Bangladesh against pesticides and heavy metal contaminations

ABSTRACT

History of food safety study proved that Sattar was the pioneer research scientist in Bangladesh who studied a lot covering the detection and improved external and internal standard GC analysis methods of different pesticides on food crops and vegetable samples in 1976-84. Food safety of major scientific study includes two major issues like (i) pesticide contamination or residue limits against standards and (ii) various heavy metal contaminations. Without these two judgments, food safety is questionable although any impurity, or foreign materials or contamination can be added (Fig. 1). Sattar developed, improved and/or established TLC and/or GC analysis methods of MCPA, MCPA and its 2 metabolities, phenoxyherbicides, DDT, organochlorine and organophosphorus pesticides and chlorinated cresols, catechols and phenols in soils, crops and/or vegetables in 1976-84, and most of the methods have been using for the last 40/45 years for food safety measures in the global village. Sattar first detected 16-18 heavy metal contaminations like As, Pb, Al, Ti, Cr, Mn, Fe, Co, Ni, Cu, Zn, Cd, Sn, Sb, Ba, Hg etc. from numerous food materials of Bangladesh in 1996. Such heavy metal works he widely continued upto 2010 with food crops, soils and water where he published more than 50 articles in journals. Practically, Sattar opened the door for discovery of analysis methods and detection of residues, fate and contamination of pesticides and heavy metals in various food materials of Bangladesh. Sattar is the pioneer regarding pesticide and heavy metal study in soil environment of Bangladesh but his related contributions on food safety study were not evaluated beforehand. This technical evaluation, contribution and judgment greatly proved and confirmed that it is Sattar who is pioneer scientist worked with food safety study in Bangladesh on pesticide and heavy metal analysis techniques, detection and contamination-the fundamental food safety concept for saving the human life.

Key words: Sattar, pioneer, food safety issues, Bangladesh, pesticides, and heavy metals

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Comparative yield performance study of some rice mutants at Pabna district of Bangladesh

ABSTRACT

The present research was conducted at the farmer’s field of Pabna during Aman season 2020-21 to investigate the growth and yield performance of rice mutants. The experiment was arranged in a randomized complete block design consisting of two rice mutants (viz. Kas-80-C-1, RM-16-N-8, BINA dhan-17 and BRRI dhan-87) as treatment and replicated thrice. All the growth, yield attributes and yield were substantially influence among the rice mutants except the phenological parameters. Results of the experiment showed that the highest plant height in BRRI dhan-87 (134.33 cm) and BINA dhan-17 was found better in respect of maximum seed yield (6.5 ton/ha). Therefore, findings of this study suggested that BINA dhan-17 would be suitable for better productivity and recommended for cultivation at Pabna region in Bangladesh.

Key words: Yield, rice, mutants.

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