Asian Plant Research Journal 2019-09-10T07:36:15+00:00 Asian Plant Research Journal Open Journal Systems <p style="text-align: justify;"><strong>Asian Plant Research Journal (ISSN: 2581-9992)</strong> aims to publish high quality papers <a href="/index.php/APRJ/general-guideline-for-authors">(Click here for Types of paper)</a> in all aspects of plant research. The journal also encourages the submission of useful reports of negative results. This is a quality controlled, OPEN peer reviewed, open access INTERNATIONAL journal.</p> Effect of Nitrogen and Phosphorus on the Growth and Seed Yield of Spinach 2019-08-29T12:52:59+00:00 Md. Rafiqul Islam Khaleda Khatun Tahmina Mostarin Md. Ehsanul Haq Md. Nahidul Islam Bithi Rani Biswas Jinia Afsun <p>The experiment was conducted at the farm of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during Rabi (November 2017 to March 2018) season to find out the growth, yield and economic benefit of spinach seed as influenced by nitrogen and phosphorus. The research involved two factors. Factor A: Four levels of nitrogen; N<sub>0</sub>= 0 kg/ha N<sub>1</sub>= 27.6 kg/ha, N<sub>2</sub>=55.2 kg/ha, N<sub>3</sub>= 82.8 kg/ha, and factor B: Four levels of phosphorus; P<sub>0</sub>= 0 kg/ha; P<sub>1</sub> = 15.84 kg/ha, P<sub>2</sub>= 31.68 kg/ha, P<sub>3</sub>= 47.52 kg/ha. There were 16 treatment combinations in the experiment and laid out in Randomized Complete Block Design (RCBD) with three replications. Quality tests of seeds were done based on the germination test (%), seed vigor test (Electrical conductivity). In case of nitrogen, the highest seed yield (1.10 t ha<sup>-1</sup>), germination percentage (87.33%) and lowest value in EC test (11.87 dS/cm) were obtained from N<sub>2</sub>, while the lowest seed yield (0.81 t ha<sup>-1</sup>), germination percentage (79.33%) and highest value in EC test ( 13.87 dS/cm) from N<sub>0</sub>. For phosphorus levels, the highest seed yield (1.05 t ha<sup>-1</sup>), germination percentage (86.58 % and) and lowest value in EC test (11.79 dS/cm) were recorded from P<sub>2</sub>, whereas the lowest seed yield (0.84 t ha<sup>-1</sup>), germination percentage (79.91%) and highest value in EC test (13.35 dS/cm) from P<sub>0</sub>. Due to mutual effect, the highest seed yield (1.30 t ha<sup>-1</sup>), germination percentage (91.33%) and lowest value in EC test (10.2 dS/cm) were noted from N<sub>2</sub>P<sub>2</sub>, whereas the lowest seed yield (0.69 t ha<sup>-1</sup>), germination percentage (72.66%) and highest value in EC test (14.83 dS/cm) from N<sub>0</sub>P<sub>0</sub>. From the economic point of view, the highest Benefit-Cost Ratio (BCR) (1.59) was found in the treatment of N<sub>2</sub>P<sub>2</sub> and the lowest BCR (1.01) was found in the treatment of N<sub>0</sub>P<sub>0</sub>. It is apparent that the treatment combination N<sub>2</sub>P<sub>2</sub> gave the best performance for the seed yield and economic benefit of spinach.</p> 2019-08-29T00:00:00+00:00 ##submission.copyrightStatement## Lemna sp. as a Chromium Heavy Metal Phytoremediator on Tannery Wastewater and its Potential Use as Fish Feed 2019-09-07T09:27:40+00:00 Inggia P. Pamungkas Yuli Andriani Junianto . Iskandar . <p><strong>Aims: </strong>This research aims to determine the ability of <em>Lemna</em> sp. as a phytoremediation agent in absorbing chromium (Cr) in tannery wastewater.</p> <p><strong>Study Design:</strong>&nbsp; A total of 20 fiber tubs with size 80 x 80 x 40 cm<sup>3</sup> and volume of 256 L were prepared and filled with 30 L each of the tannery wastewater and 1.75% bio-slurry added with a volume of wastewater as a source of nutrition for <em>Lemna </em>sp.. The number of <em>Lemna</em> sp. which is used for culture was 180 g for each fiber tube.</p> <p><strong>Place and Duration of Study:</strong> Culturing <em>Lemna </em>sp. in tannery wastewater were carried out in Ciparanje Land Fisheries Area of ​​the Faculty of Fisheries and Marine Sciences Universitas Padjadjaran and for chromium analysis were carried out in Center for Natural Resources and Environment Research of Universitas Padjadjaran, between February and March 2019.</p> <p><strong>Methodology:</strong> This research was carried out by culturing <em>Lemna</em> sp. in tannery wastewater for five days with 20 replications and comparing Cr concentrations in tannery wastewater and <em>Lemna</em> sp. at the end and beginning of the research. Chromium analysis results on the tannery wastewater and <em>Lemna</em> sp. the beginning and end of the research on each sample was tested by paired t-test.</p> <p><strong>Results:</strong> by culturing <em>L</em><em>emna</em> sp. in the tannery wastewater as phytoremediation agent for five days the results obtained Cr concentration at the beginning of research each for tannery wastewater and <em>Lemna</em> sp. ranged from 0.180 to 0.194 mg/L with an average of 0.187±0.0034 mg/L and 0 mg/kg. While at the end of the research the concentration of Cr in tannery wastewater and <em>Lemna</em> sp. respectively ranged from 0.057-0.075 mg/L with an average of 0.068±0.0044 mg/L and 2.292-2.333 mg/kg with an average of 2.314±0.0101 mg/kg. There was a decrease in Cr concentration by an average of 64.01±1.96% in tannery wastewater and an increase in <em>Lemna </em>sp.. Paired t-test results showed that <em>Lemna</em> sp. which was cultured in tannery wastewater had a significant influence on Cr concentrations in both tannery wastewater and <em>Lemna</em> sp so that there were significant differences in Cr concentrations at the beginning (day 0) and at the end of the research (day 5).</p> <p><strong>Conclusion:</strong> Average ability of <em>Lemna</em> sp. in absorbing and accumulating chromium in the tannery wastewater in the tissue was 2.314±0.0101 mg/kg and the average reduction in Cr concentration in liquid waste was 64.01±1.96%. Utilization of <em>Lemna</em> sp. containing chromium is possible to be used as a food supplement for fish to increase growth due to reduced Cr toxicity by <em>Lemna</em> sp.</p> 2019-09-07T00:00:00+00:00 ##submission.copyrightStatement## Morpho-Physiological Responses of Abelmoschus esculentus (L.) Moench to Arbuscular Mycorrhizal Fungi Inoculation under Drought Stress 2019-09-10T07:36:15+00:00 Okon, Okon Godwin Uyon, Peter Paul Nyahette, Enobong Monday <p><strong>Aims: </strong>To assess the potential impacts of arbuscular mycorrhizal fungi (AMF) (<em>G. geosporum</em>) inoculation on the survival of <em>A. esculentus</em> under drought stress.</p> <p><strong>Study Design: </strong>This experiment was set up in a completely randomized design (CRD) with all treatments replicated thrice. This gave a total of 7 treatments, 21 replicates.</p> <p><strong>Place and Duration of Study:</strong> The experimental soil used for this study was collected from the Botanical Garden of the Department of Biological Sciences, Ritman University (Latitude 5º11’44ºN and Longitude 7º42’12ºE), Akwa Ibom State, Nigeria. All analysis was carried out in Soil Science Laboratory and Botany Laboratory, Akwa Ibom State University, between January and march 2019.</p> <p><strong>Methodology:</strong> Soil samples were analyzed following the standard procedures outlined for wet acid digestions. Growth parameters were determined using standard methods. At Leaf chlorophyll meter was employed in the assessment of the photosynthetic pigments of the experimental plant. Biomass yield were calculated using standard formulas.</p> <p><strong>Results:</strong> The physicochemical analysis of the experimental soil used in this study revealed the physical and chemical properties of the soil; pH (6.12), EC (0.06dS/m), organic matter (2.90%), Av. P (44.62 mg/kg) and textural class of the soil was described as loamy sandy soil. Shoot length, petiole length, internode length, number of leaves and leaf area as well as the total photosynthetic pigments (TPP) contents of <em>A. esculentus</em> were significantly (<em>P </em>=.05) reduced (from 38.77±3.01 mg/kg to 29.83±1.89 mg/kg) by drought stress. There was also significantly (<em>P</em> = .05) reduction in N, P, K, Ca and Mg composition of <em>A. esculentus</em> as well as its biomass yield. However, the inoculation of <em>A. esculentus </em>roots with AMF (<em>G. geosporum</em>) in this study through several morphological and physiological processes exhibited remarkable improvement in growth morphology, total photosynthetic pigments, macronutrients composition as well as biomass yield.</p> <p><strong>Conclusion:</strong> The results of this work have shown that AMF can enhance the ability of <em>A. esculentus</em> to resist drought stress possibly through some morphological and physiological changes which improves water and nutrients uptake.</p> 2019-09-10T00:00:00+00:00 ##submission.copyrightStatement##