International Journal of Plant & Soil Science <p style="text-align: justify;"><strong>International Journal of Plant &amp; Soil Science (ISSN: 2320-7035)</strong>&nbsp;aims to publish high quality papers (<a href="/index.php/IJPSS/general-guideline-for-authors">Click here for Types of paper</a>) in all areas of ‘Plant &amp; Soil Science 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> en-US (International Journal of Plant & Soil Science) (International Journal of Plant & Soil Science) Mon, 06 Jan 2020 07:44:00 +0000 OJS 60 Effect of Fertilization and Bacterial Inoculation on Nutrient Status in Coal Mine Soil under Alder (Alnus sibirica) Plantation <p>This study was conducted to assess the effect of fertilization and nitrogen fixing (N-fixing) bacterial inoculation on the available nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), and magnesium (Mg), present in the coal mine soil, by growing N-fixing plant species, alder (<em>Alnus sibirica</em>). The study was conducted in a greenhouse of the Forest Science Department, Chungbuk National University, South Korea, during the period of May 2019 to July 2019. A completely randomized design (CRD) comprising of four treatments, including T<sub>0</sub>—non-fertilized non-inoculation (control), T<sub>1</sub>—fertilization, T<sub>2</sub>—bacterial inoculation and T<sub>3</sub>—fertilization along with bacterial inoculation with three replications were used in the study. The results of the study showed that available N (NH<sub>4</sub><sup>+</sup>-N and NO<sub>3</sub><sup>−</sup>-N) in the coal soil were increased by the applied treatments for alder, as compared to control. Apart from control, difference was also found for increasing ammonium (NH<sub>4</sub><sup>+</sup>-N) between treatments T<sub>1</sub> and T<sub>3</sub> and for increasing nitrate (NO<sub>3</sub><sup>−</sup>-N) between treatments T<sub>1</sub> and T<sub>2</sub> and treatments T<sub>2</sub> and T<sub>3</sub>. Available P and K in the soil also increased when NPK fertilizer was applied solely, and together with inoculation to the plants but reduced at other treatments. Therefore, it can be concluded that fertilization and biological N fixation in alder plant can improve the fertility of coal mine soil, and hence, this plant species could be a good option for the reclamation of degraded coal mine soil.</p> Md. Omar Sharif, Chang-Seob Shin ##submission.copyrightStatement## Mon, 06 Jan 2020 00:00:00 +0000 Study of the Control of Fungus Occurring in Schizolobium amazonicum Seeds with the Use of Pyroligneous Extract <p>Fungi are the main microorganisms present in seeds, constituting the main cause of deterioration and production losses. Among the health testing methodologies for detecting fungi in seeds, incubation tests under controlled conditions facilitate fungal growth and sporulation. Therefore, this work aimed to evaluate the efficiency of pyroligneous extract in the control of phytopathogenic fungi occurring in <em>Schizolobium amazonicum</em> seeds. Treatments consisted of exposure of seeds to pyroligneous extract for a period of five minutes at concentrations (0%, 1%, 2.5%, 5%, 7%, 10% and 12.5%). The treated seeds were placed in Petri dishes, lined with two sheets of filter paper, moistened with sterile distilled water. The experimental design was completely randomized, consisting of 7 treatments, with 9 seeds per plate and 10 replications per treatment, totaling 630 seeds arranged in 7 Petri dishes. The evaluation was performed 8 days later, with the aid of stereoscopic and light microscopy, where the fungal growth in each seed in the plates was verified for the incidence calculation and then the identification of these. Pyroligneous extract was found to be efficient in reducing the fungal incidence of the genera <em>Fusarium</em> sp. and <em>Rhizoctonia</em> sp., fungi considered important plant pathogens that could compromise seed quality and seedling establishment in the field. It also reduced the incidence of storage fungi capable of causing seed deterioration and consequent loss of vigor, such as <em>Aspergillus</em> spp. occurring in seed samples of <em>S. amazonicum</em>. However, <em>Penicillium</em> sp was not controlled by treatment of <em>S. amazonicum </em>seeds with pyroligneous extract up to 12.5% concentration.</p> D. G. da C. Macedo, G. Q. David, O. M. Yamashita, W. M. Peres, M. A. C. de Carvalho, M. E. de Sá, F. M. dos S. Lourenço, M. P. de B. Mateus, I. V. Karsburg, T. P. M. de Arruda, C. Rodrigues ##submission.copyrightStatement## Thu, 09 Jan 2020 00:00:00 +0000 Application of Quality Indicators in the Evaluation of Subtropical Argiudolls and Hapludolls in Formosa (Argentina) <p>The quality indicators are suitable tools to determine the state of the soil and the effects of different uses and management on it. The aim of the present work was to evaluate the quality of sub-tropical Argiudolls and Hapludolls subjected to different uses in Formosa, using a minimum set of indicators (MSI). Changes in soil use and the application of management techniques to maximize agricultural production are frequent in the world. In Formosa, Argentina, improvements in the productive infrastructure and low market value of the land, promote that these changes occur faster than the monitoring of the ones. The effects of 25 years of continuous agricultural use, extensive livestock in implanted pastures and fruit crops, in relation to the native forest were analyzed. The MSI consisted of five variables: total organic carbon, particulate organic carbon, total nitrogen, structural stability and bulk density. The baseline of the indicators was determined and threshold values were established. The standardized MSI was analyzed graphically. Particulate carbon and structural stability were the most sensitive indicators. Continuous agriculture degraded the edaphic system, resulting in lower values of indicators than the thresholds. It produced a decrease of 74% of the particulate organic carbon and 63% of structural stability, with possible impact on the resilience of the system. Fruit crops led to a decrease in soil quality causing particulate organic carbon and structural stability to approach values that compromise their natural recovery. The implanted pasture improved the quality of the soil with respect to the degraded native forest.</p> Juan Esteban Baridón, Roberto Raúl Casas ##submission.copyrightStatement## Fri, 10 Jan 2020 00:00:00 +0000 Effect of Tillage and Water Management on Aggregate Stability of a Gleyic Cambisols <p>The objective of this study was to determine the effect of tillage and water management on the physical stability of irrigated lowland rice field, in Kwalkwalawa, Sokoto State. The experiment was carried out in a farmer`s field, near the Usmanu Danfodiyo University Teaching and Research Farm, Kwalkwalawa, Sokoto State. The coordinates of the area were taken using global positioning system (GPS) model Garmin etrex 20.0, which shows that the area is located on (N13°05.963”E005°12.650” and at 252 m asl). The soils of the study area were classified as Aeric Endoaquepts at subgroup level in the USDA Soil Taxonomy System which correlated with Gleyic Cambisols in the World Reference Base. The treatments consisted of factorial combination of two tillage systems (conventional tillage (CT) and reduced tillage (RT), three irrigation water managements (Alternate one, two and three days irrigation intervals, which were carried out from one week after transplanting to hard dough stage) and three rice varieties (FARO 44, 60 and 61) all laid in a split-plot design and replicated three times. After harvest, disturbed soil samples were collected with the aid of soil auger, prepared and passed through 5 mm sieve for aggregate stability determination. Result reveals that a consistent trend in aggregate size fraction was observed between the two tillage systems in both years, were a significant decrease in values of aggregate fractions of both the CT and RT in 2019 compared to in 2018. Aggregate size fraction of 5-2 mm had a significantly high value of RT compared to CT, 2-0.25 mm fractions were at par (0.41) while a greater value of aggregate fractions for CT in both 0.25-0.005 mm and ˂0.005 mm were observed compared to RT. Alternate days to irrigation and sampling depths increase with a corresponding in all the aggregate size classes in the two years of this study. A significant difference in mean weight diameter (MWD) and geometric mean diameter (GMD) between the two tillage, water management and depth was noticed in both years of the trial where RT and alternate one day had high value while MWD and GMD increase with increasing depth.</p> E. A. Manasseh ##submission.copyrightStatement## Sat, 18 Jan 2020 00:00:00 +0000