Faculty Profiles - SHIMA Kazuto

Papers - SHIMA Kazuto

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Soil Properties Variation Valued in Relation to Land Use and Management Practices in Vietnam Reviewed

K. H.T. Dinh, K. Shima

Indian Journal of Agricultural Research 58 ( 4 ) 634 - 641 2024.8

Language：English Publishing type：Research paper (scientific journal)

Background: Land use and management practices (LUMPs) have been accelerated globally to serve the increasing socioeconomic requirements in recent decades. Methods: This study focuses to assess the impacts of the LUMPs on the properties and composition of soil in the Lam River Basin (LRB), Vietnam based on analysis of ninety-six soil samples collected in the soil profiles (0_60 cm). Result: The results indicated that the sand and clay ratios (34.0~35.7% and 16.2~19.9%) and bulk density (BD) (1.07±0.05~1.34±0.06 Mg m-3) in the natural forest lands (NFLs) were lower and higher perturbed than the plantation forest lands (PFLs) (31.1~ 51.5%, 5.7~38.2% and 0.86±0.03~1.12±0.05 Mg m-3) in the 0–20 cm topsoil layer. The soil texture is mainly sandy clay to clay loam and the BD tends slightly increase in the topsoil layer, then decrease in the 20–60 cm subsoil layer. There is no difference in soil pH between collected soil samples (CSSs) and tends to increase with increasing the subsoil layer. The base cations (BCs) (Ca2+, K+, Mg2+: 0.01~0.29, 0.06~0.11 and 0.06~0.07 Cmolc kg-1) and total organic contents (TOCs) (total carbon (TC), total nitrogen (TN), total phosphorus (TP): 24.11; 2.80 and 0.19 g kg-1) of the NFLs are higher than those of the CSSs (TC, TN, TP: 14.37~23.91, 1.62~2.28 and 0.08~0.17 g kg-1) in the topsoil layer while these values were not different in the topsoil layer.

DOI： 10.18805/IJARe.AF-818

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Assessment of physico-chemical parameters of primaeval forest soil in Thanh Chuong District of Nghe An Province, Vietnam Reviewed

Kim Hao Thi Dinh, Kazuto Shima

Research on Crops 23 ( 2 ) 339 - 346 2022.6

Publishing type：Research paper (scientific journal)

The physicochemical features of soil (PFOS) play an important role in the growth process of flora and vegetative diversity of the primaeval forests. The PFS in the primaeval forest belonging to Thanh Chuong District in Nghe An Province, Vietnam was investigated during 2016-2019 to assess the fertility and productivity status of the soils. To deploy this work, ninety-six soil samples at eight random locations from twenty-four sampling plots represented the upper, middle, and lower of the study area were analyzed for soil texture (ST), bulk density (BD), pH, total nitrogen (TN), total phosphorus (TP), and exchangeable cations (ECs) (K+, Ca2+ and Mg2+ ). Texturally, the soils were clay loam to sandy clay with average percentages of sands around 41%, silts 19%, and clay 40% while the bulk density of the soils was 0.83-1.41%. The acidic to slightly acidic soil pH (4.01-4.82) and high TN (0.95-2.66 g/kg) and TP varies from 0.06 and 0.18 g/kg. Correlation analysis of the physicochemical parameters was conducted using the Pearson correlation test in R programming. Analysis showed that the variation in the texture of silt content among the soil depth was minimal.

DOI： 10.31830/2348-7542.2022.046

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Effects of forest reclamation methods on soil physicochemical properties in North-Central Vietnam Reviewed

Kim Hao Thi Dinh, Kazuto Shima

Research on Crops 23 ( 1 ) 110 - 118 2022.3

Publishing type：Research paper (scientific journal)

Globally, forest loss is happening because of timber harvesting, agricultural expansion, wildfires, mining extraction and service transportation networks via roads. This study was conducted during 2016 to 2019 at Ngoc Lam Commune, Thanh Chuong District, Nghe An Province, Vietnam on the effect of forest reclamation methods (FRMs), including the slash-and-burn method (SBM), the clear-cutting method (CCM), and agricultural cultivation methods on the interaction of soil physicochemical properties across the study area. To conduct this study, soil samples were collected in natural forest areas in the study area. The results indicated that the bulk density (BD) of the natural forest soils across the study area ranged from 0.86 to 1.12 g/cm3 at depths varying from 0 to 60 cm from the surface. The concentrations of total carbon (T-C), exchangeable potassium (Exch. K+), and exchangeable magnesium (Exch. Mg2+) in the deeper layer were normally lower than in the upper layer. Forest reclamation using the CCM influenced the increase of the BD at depths varying from 0-20 cm, but the soil texture remained same, while forest reclamation applying the CCM showed an increase in the BD in the plots depending on the land-use management (LUM). Based on these findings, LUM has a significant influence on the concentration of Exch. Ca2+, Exch. K+, Exch. Mg2+, and T-C compared to FRMs across the North-Central Vietnam.

DOI： 10.31830/2348-7542.2022.016

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Evaluation of Compost from On-Farm Composting of Coffee Pulp Using Wood Chips and Air Flow Reviewed

Hoang Thi Quynh, Morita Mishio, Shima Kazuto

JOURNAL OF BIOBASED MATERIALS AND BIOENERGY 14 ( 3 ) 408 - 413 2020.6

Language：English Publishing type：Research paper (scientific journal) Publisher：AMER SCIENTIFIC PUBLISHERS

Being the second largest coffee producing country worldwide, Vietnam is estimated to annually generate approximately 1 million m(3) of coffee pulp. Instead of being effectively utilized in the form of recycling resources, most of the waste is discarded, causing serious environmental pollution even though it contains essential macronutrients in high concentrations. In this study, we performed on-farm composting trials of coffee pulp with simple aeration using wood chips and air flow. After 2 months of composting, samples were collected for analysis and a cultivation experiment was conducted to clarify the effectiveness of the composts. Coffee pulp compost was a nutrient-rich organic material with the total C, total N and total K in the range of 340.35-386.02 g kg(-1), 23.80-36.70 g kg(-1), and 18.86-25.13 g kg(-1), respectively. The C:N ratio was in the range of 10-15 and the NH4-N:NO3-N ratio was in the range of 1-2, indicating compost was mature. In the compost where wood chips were used as the bulking agent under air flow, exhibited a concentration of inorganic N that was significantly higher than that of the other composts. The plant biomass corresponding to the compost showed similarity with chemical fertilizer. Furthermore, the P content and the plant biomass produced by the compost in which chicken manure was added, were investigated. The results indicate that the addition of P-source in the manufacturing process enhanced the fertilizing efficiency of the compost.

DOI： 10.1166/jbmb.2020.1971

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Composting of Sewage Sludge with a Simple Aeration Method and its Utilization as a Soil Fertilizer. Reviewed International journal

Thanh-Binh Nguyen, Kazuto Shima

Environmental management 63 ( 4 ) 455 - 465 2019.4

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：SPRINGER

The objective of this study was to examine the feasibility of sewage sludge composting using a simple aeration method. Two consecutive composting trials (run A and run B) using Japanese sludge and woodchips (1:1, v/v) were conducted in cubic boxes (0.45x0.45x0.45 m(3)) made by plywood at Okayama University. Air was forced up through small holes perforated on two open-ended parallel PVC pipes (O 16mm, 0.25m apart) laid at the base. The results show that compost temperatures were rapidly increased to the peak points of 47.4 degrees C (run A) and 74.8 degrees C (run B) within the first 2-3 days and varied depending on each composting run and vertical locations. The changes in physicochemical properties with particular attention to inorganic nitrogen (NH4-N, NO3-N) and free amino acid nitrogen (FAA-N) indicated that the biodegradation took place by different mineralization pathways during the composting process. The degradation of organic matter into amino acids followed by ammonification was predominant in run B, whereas the nitrification was greater in run A. A pot experiment using the two finished composts and their raw materials was carried out to study their effectiveness as fertilizer to Komatsuna (Brassica rapa var. perviridis). The total plant biomass produced by the composts was similar to chemical fertilizer. The lowering proportions of FAA-N/T-N, NH4-N/NO3-N, and C/N ratios in the composts compared to those in raw materials was found to correlate with the increase in plant biomass.

DOI： 10.1007/s00267-017-0963-8

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Composting of Sewage Sludge with a Simple Aeration Method and its Utilization as a Soil Fertilizer Reviewed

Thanh Binh Nguyen, Kazuto Shima

Environmental Management 63 ( 4 ) 455 - 465 2019.4

Language：English Publishing type：Research paper (scientific journal) Publisher：SPRINGER

The objective of this study was to examine the feasibility of sewage sludge composting using a simple aeration method. Two consecutive composting trials (run A and run B) using Japanese sludge and woodchips (1:1, v/v) were conducted in cubic boxes (0.45 × 0.45 × 0.45 m 3 ) made by plywood at Okayama University. Air was forced up through small holes perforated on two open-ended parallel PVC pipes (ø 16 mm, 0.25 m apart) laid at the base. The results show that compost temperatures were rapidly increased to the peak points of 47.4 °C (run A) and 74.8 °C (run B) within the first 2–3 days and varied depending on each composting run and vertical locations. The changes in physicochemical properties with particular attention to inorganic nitrogen (NH 4 –N, NO 3 –N) and free amino acid nitrogen (FAA-N) indicated that the biodegradation took place by different mineralization pathways during the composting process. The degradation of organic matter into amino acids followed by ammonification was predominant in run B, whereas the nitrification was greater in run A. A pot experiment using the two finished composts and their raw materials was carried out to study their effectiveness as fertilizer to Komatsuna (Brassica rapa var. perviridis). The total plant biomass produced by the composts was similar to chemical fertilizer. The lowering proportions of FAA-N/T-N, NH 4 –N/NO 3 –N, and C/N ratios in the composts compared to those in raw materials was found to correlate with the increase in plant biomass.

DOI： 10.1007/s00267-017-0963-8

Title "Organic Fertilizers" in Vietnam's Markets: Nutrient Composition and Efficacy of Their Application Reviewed

Hoang Thi Quynh, Shima Kazuto

SUSTAINABILITY 10 ( 7 ) 2018.7

Language：English Publishing type：Research paper (scientific journal) Publisher：MDPI

Organic fertilizers have recently been gaining popularity; however, their governance is not completely assessed in developing countries. This study investigated the nutrient composition of so-called organic fertilizers in Vietnam's markets and issues related to their production, and evaluated their potential to contaminate the groundwater. We analyzed the physicochemical properties of 12 domestic and four imported products of the fertilizers, and conducted a cultivation experiment in sandy soil with the fertilizer applied at a rate of 200 mg N kg(-1) soil using an automatic watering apparatus in a greenhouse. We further studied the production of an "organic fertilizer" from coffee by-products. The nutrient content greatly varied among domestic products, whereas they were quite similar among imported products. The product packaging of the collected samples lacked information regarding raw materials. Two thirds of the domestic products contained over 30% of the total N in the inorganic form, implying that the N content dramatically increased in the fertilizers rather than in their supposed raw materials. The stages involved in the production were composting, the addition of extra soil as a bulking agent, and the mixing-in of chemical substances to increase the nutrient content before packing. The remarkably high ratio of inorganic N to total N was attributed to excessive N leaching from soil by the application of domestic fertilizers. These results suggested the need for quality criteria guidelines for organic fertilizers in Vietnam that underline not only nutrient levels, but also the control of raw materials and production process of compost, because they are closely related to nutrient uptake and the leaching loss of nutrients.

DOI： 10.3390/su10072437

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Change in uptake, transport and accumulation of ions in Nerium oleander (rosebay) as affected by different nitrogen sources and salinity. Reviewed International journal

Ahmad Abdolzadeh, Kazuto Shima, Hans Lambers, Kyozo Chiba

Annals of botany 102 ( 5 ) 735 - 46 2008.11

Language：English Publishing type：Research paper (scientific journal) Publisher：OXFORD UNIV PRESS

Background and Aims The source of nitrogen plays an important role in salt tolerance of plants. In this study, the effects of NaCl on net uptake, accumulation and transport of ions were investigated in Nerium oleander with ammonium or nitrate as the nitrogen source in order to analyse differences in uptake and cycling of ions within plants.Methods Plants were grown in a greenhouse in hydroponics under different salt treatments (control vs. 100 mM NaCl) with ammonium or nitrate as the nitrogen source, and changes in ion concentration in plants, xylem sap exuded from roots and stems, and phloem sap were determined.Key Results Plant weight, leaf area and photosynthetic rate showed a higher salt tolerance of nitrate-fed plants compared with that of ammonium-fed plants. The total amount of Na(+) transported in the xylem in roots, accumulated in the shoot and retranslocated in the phloem of ammonium-fed plants under salt treatment was 1.8, 1.9 and 2.7 times more, respectively, than that of nitrate-treated plants. However, the amount of Na(+) accumulated in roots in nitrate-fed plants was about 1.5 times higher than that in ammonium-fed plants. Similarly, Cl(-) transport via the xylem to the shoot and its retranslocation via the phloem (Cl(-) cycling) were far greater with ammonium treatment than with nitrate treatment under conditions of salinity. The uptake and accumulation of K(+) in shoots decreased more due to salinity in ammonium-fed plants compared with nitrate-fed plants. In contrast, K(+) cycling in shoots increased due to salinity, with higher rates in the ammonium-treated plants.Conclusions The faster growth of nitrate-fed plants under conditions of salinity was associated with a lower transport and accumulation of Na(+) and Cl(-) in the shoot, whereas in ammonium-fed plants accumulation and cycling of Na(+) and Cl(-) in shoots probably caused harmful effects and reduced growth of plants.

DOI： 10.1093/aob/mcn156

Drought Adaptation Confers Short-Term but Not Long-Term Salt Tolerance in Cocksfoot, Dactylis glomerata Reviewed

Ahmad Abdol Zadeh, Kazuto Shima, Erik J. Veneklaas, Kyozo Chiba

International Journal of Botany 4 ( 3 ) 283 - 289 2008.6

Publishing type：Research paper (scientific journal) Publisher：Science Alert

The effects of different levels of NaCl (0, 50, 100 and 150 mM) on growth, water relations, ions accumulation and nitrogen assimilation in two varieties of Dactylis glomerata, i.e., Hispanica from a semi-arid area and Frontier from a temperate climate, were studied in a greenhouse in hydroponic culture. Salinity induced a significant decrease in the growth of both varieties; however, their responses to NaCl stress were different. Based on weight and photosynthesis, Hispanica was found initially to be more resistant to salinity than Frontier. However, over a longer period of salinity treatments, Frontier displayed higher salt tolerance, especially at 50 mM NaCl concentration. The initial resistance to salinity of Hispanica, compared to Frontier, appeared to be related with a greater decrease in transpiration and water potential due to salinity, while there was no change in relative water content, suggesting better osmotic adjustment. In contrast, Frontier demonstrated more exclusion of Na+ and Cl- from the xylem stream and a higher K+/Na + ratio, leading to a less harmful effect of salinity in the shoot, manifesting itself in better growth of this variety over the longer term. The results support the hypothesis that growth response to salinity has two phases. The first phase of growth reduction is mostly due to water (osmotic) stress, with the drought adapted variety, Hispanica, exhibiting higher tolerance. In the second phase, when toxic effects of accumulated Na+ and Cl - in tissues caused growth retardation, Frontier proved to have the higher resistance to salinity. © 2008 Asian Network for Scientific Information.

DOI： 10.3923/ijb.2008.283.289

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Utilization of incineration ashes of sewage sludge as the fertilizer Reviewed

嶋一徹, 片山博子

日本緑化工学会誌 33 ( 1 ) 128 - 133 2007

Authorship：Corresponding author Language：Japanese Publisher：The Japanese Society of Revegetation Technology

In order to effective utilize the sewage sludge as the fertilizer; we clarified the characteristics of the incineration ashes of sewage sludge. Concentration of cadmium and lead contained in the incineration ashes material decreased dramatically with burnt up at temperature more than 700°C, as result of volatilization. Zinc and cupper contained in ashes of sewage sludge did not decreased after burnt up at temperature of 950°C but were transformed into in-soluble form by incineration treatments. Sequential fraction of heavy metals as affected by application of the incineration ashes material to soil was analyzed. A greenhouse experiment was conducted to compare the effect of application on the growth of grasses species. Application effect of phosphorus contained in the ashes was larger than that contained in the dried sludge cakes.

DOI： 10.7211/jjsrt.33.128

On the possibility of growing bamboo as an alternative crop in the Eastern Black Sea region of Turkey Reviewed

Devlet Toksoy, Hasan Ayyildiz, Musatafa Var, Shima Kazuto, Chiba Kyozo

Journal of Bamboo and Rattan 5 ( 1-2 ) 73 - 78 2006

Publishing type：Research paper (scientific journal)

This study investigates by a direct questionnaire suvery the response of 508 tea farmers to bamboo as an alternative crop in the Eastern Black Sea region of Turkey. It is found that 77.6 per cent of the participants were not satisfied with tea farming and 76.8 per cent of the participants emphasised that they would like to consider growing an alternative crop. However, 49.6 per cent were not aware of the potential of bamboo. After providing some information about bamboo, only 18.3 per cent farmers were willing to try growing bamboo as an alternative crop. © KFRI 2006.

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Effects of the change of soil condition on C0₂ release form fire affected slope Reviewed

TAKENAKA Manabu, SHIMA Kazuto

Journal of the Japanese Society of Revegetation Technology 31 ( 1 ) 198 - 201 2005

Vegetation changes in cutting slope after re-vegetation by plantation of potential native species Reviewed

WADA Mitsuki, SHIMA Kazuto, CHIBA Kyozo, NISHIMOTO Takashi

Journal of the Japanese Society of Revegetation Technology 31 ( 1 ) 167 - 170 2005

Effect of nutrients dynamics on establishment of pioneer species in fire affected slope Reviewed

KINOSHITA Naoko, SHIMA Kazuto

Journal of the Japanese Society of Revegetation Technology 31 ( 1 ) 194 - 197 2005

Heavy metal adsorption ability of bamboo charcoal and effect as a mulching material

藤原敏, 嶋一徹, 千葉喬三

日本緑化工学会誌 30 ( 1 ) 39 - 44 2004

Language：Japanese Publisher：The Japanese Society of Revegetation Technology

The effective utilization of the bamboo which was unused organic resources was considered, and heavy metal adsorption ability of the bamboo carbide was compared with it of wooden charcoal and activated carbon. As the result, pH of the bamboo charcoal showed the basicity regardless of the carbonization temperature, and it became clear to have the adsorption ability which bamboo charcoal which mainly contains the potassium is excellent. Then, the practically experiment was carried out on heavy metal adsorption ability in the street dust in utilizing the bamboo charcoal under the planting tree in the roadside as a mulching material. It became clear to be effective in the control of the heavy metal pollution by laying the bamboo charcoal under the planting.

DOI： 10.7211/jjsrt.30.39

Vegetation changes after slope revegetation by potential native plants - The case of 13-year cutting slope - Reviewed

WADA Mitsuki, SHIMA Kazuto, NISHIMOTO Takashi, CHIBA Kyozo

Journal of the Japanese Society of Revegetation Technology 30 ( 1 ) 235 - 238 2004

The characteristic of germination and establishment of pioneer species in fire affected forest Reviewed

KINOSHITA Naoko, SHIMA Kazuto, HIRONO Masaki

Journal of the Japanese Society of Revegetation Technology 30 ( 1 ) 336 - 339 2004

The effects of bamboo charcoal and phosphorus fertilization on mixed planting with grasses and soil improving species under the nutrients poor condition Reviewed

YAN G Z, 嶋一徹, 藤原敏, 千葉喬三

日本緑化工学会誌 30 ( 1 ) 33 - 38 2004

Authorship：Corresponding author Language：Japanese Publisher：The Japanese Society of Revegetation Technology

The growth of soil improving species planted with grasses was decreased on the weathered granite soil due to inhibiting the phosphorus uptake. The effects of bamboo charcoal addition and phosphorus fertilizer on the growth of soil improving species were investigated under nutrients poor condition. It was recognized that the growth and nodulation of soil improver declined considerably with addition of bamboo charcoal, but increased with phosphorus fertilizer. On the other hand, mix-planted soil improver grew lower when bamboo charcoal and phosphorus were simultaneously applied. These suggest that adsorption of soil phosphorous by bamboo charcoal causes phosphorous deficiency and hide the effect for soil improver when they were mix-planted.

DOI： 10.7211/jjsrt.30.33

The effects of mixed planting with grasses on growth of soil improving species under the nutrients poor condition Reviewed

YAN G Z, 嶋一徹, 千葉喬三

日本緑化工学会誌 29 ( 1 ) 33 - 38 2003

Authorship：Corresponding author Language：Japanese Publisher：The Japanese Society of Revegetation Technology

The effect of mixed planting with grasses on growth of soil improving species under the nutrients poor condition was investigated. The amount of nodules and aboveground biomasses of the improving species decreased with increasing the number of mix planted grasses and increased with phosphorus fertilizer. The results suggest that a lack of phosphorus in soil was due to mix planting with grasses and it cause the decline of nodulation and low growth of soil improving species.

DOI： 10.7211/jjsrt.29.33

Heavy metal pollution of soil under street tree in Okayama city Reviewed

SHIMA Kazuto, AIHARA Kenji, CHIBA Kyozo

Journal of the Japanese Society of Revegetation Technology 29 ( 1 ) 231 - 234 2003

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Papers - SHIMA Kazuto