Journal- Faculty of Agriculture Kyushu University (J FAC AGR KYUSHU U)

Publisher: Kyūshū Daigaku. Nōgakubu

Current impact factor: 0.26

Impact Factor Rankings

2016 Impact Factor Available summer 2017
2014 / 2015 Impact Factor 0.255
2013 Impact Factor 0.218
2012 Impact Factor 0.212
2011 Impact Factor 0.272
2010 Impact Factor 0.24
2009 Impact Factor 0.352
2008 Impact Factor 0.192
2007 Impact Factor 0.239
2006 Impact Factor 0.12
2005 Impact Factor 0.447
2004 Impact Factor 0.261
2003 Impact Factor 0.273
2002 Impact Factor 0.188
2001 Impact Factor 0.159
2000 Impact Factor 0.173
1999 Impact Factor 0.471
1998 Impact Factor 0.366
1997 Impact Factor 0.076
1996 Impact Factor 0.129
1995 Impact Factor 0.117
1994 Impact Factor 0.075
1993 Impact Factor 0.207
1992 Impact Factor 0.291

Impact factor over time

Impact factor
Year

Additional details

5-year impact 0.25
Cited half-life 8.10
Immediacy index 0.07
Eigenfactor 0.00
Article influence 0.05
Other titles Journal of the Faculty of Agriculture, Kyushu University, Kyūshū Daigaku Nōgakubu kiyō
ISSN 0023-6152
OCLC 9802493
Document type Journal / Magazine / Newspaper

Publications in this journal

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    ABSTRACT: To confirm the difference in aggregation pheromone levels in Riptortus pedestris depending on host plants, R. pedestris was measured after feeding 6 legumes: mung bean [Vigna radiata var. radiata (L.) R. Wilczek], small black bean (Rhynchosia nulubilis), hairy vetch (Vicia villosa Roth), yellow soybean [Glycine max (L.) Mem], cranberry bean (Phaseolus vulgaris), and black soybean [Glycine max (L.)]. For the R. pedestris collected at bean fields, hairy vetch field, and outdoor field, the pheromones were also analyzed using gas chromatography. We focused on tetradecyl isobutyrate (TI) which is a known insect attractant. The bugs provided with cranberry beans secreted the most TI and those provided with hairy vetch secreted the least TI; the amount of TI secreted was different for each of the beans. The bean bugs' TI secretion percentage was the highest for those that ingested black soybean and lowest for those that ingested hairy vetch. Aggregation pheromone secretions were affected by food sources; with cases of supporting plants displaying the lowest amount of secretion, whereas cases of supporting plants and seeds displayed the highest amount of secretion as well as the highest percentage of secreting bean bugs. Bean bugs captured in bean fields secreted the highest amount of TI component.
    No preview · Article · Sep 2015 · Journal- Faculty of Agriculture Kyushu University
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    ABSTRACT: Virus induced gene silencing (VIGS) is an efficient and rapid method to identify plant gene functions. One of the most widely used VIGS vectors is Tobacco rattle virus (TRV) which has been used successfully for RNA interference (RNAi) in N. benthamiana and tomato. We previously modified a TRV VIGS vector to contain the Gateway system for high throughput cloning (Ko et al., J. Fac.Agr.,Kyushu Univ., 60(1), 139-149 (2015)), and utilized this system to express a library of N. benthamiana cDNA. Random c.300 bp N. benthamiana cDNA fragments were generated by ultrasonication and inserted into the TRV VIGS vector by Gateway cloning. N benthamiana were agroinfiltrated with randomly selected TRV cDNA constructs in Agrobacterium tumefaciens GV 2260. Distinct visible phenotypes were identified in three sets of the inoculated N. benthamiana plants. The three distinguished phenotypes showed leaf malformation and necrosis. The three expressed gene inserts were homologous to EST fragments identified as CK290013.1, CK296346.1, and AM8112161.1, and presumably these genes are related to TRV pathogenesis in N. benthamiana. Identification of the selected genes by VIGS will aid further analysis to determine the relationship between VIGS phenotype and gene function.
    No preview · Article · Sep 2015 · Journal- Faculty of Agriculture Kyushu University
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    ABSTRACT: EK-2612 [5-(2-3 dihydro-2,2,4,6,7-pentamethyl benzofuran-5-yl)-2-[1-(allyoxyimino) butyryl]-3 hydroxy cyclohex-2-en-1-one] is a new herbicide being developed for the selective post-emergence control of a wide range of grass weeds. It is a member of the class of cyclohexane-1,3-diones which inhibits chloroplastic acetyl-CoA carboxylase (ACCase, EC 6.4.1.2) and block fatty acid biosynthesis. A study was conducted to evaluate the herbicidal performances of EK-2612 especially on barnyardgrass and rice. The compound EK-2612 performed excellent post emergence activity against barnyardgrass exhibiting the growth inhibition of barnyardgrass by 74 and 84% at 60 and 120 g a.i. ha(-1), respectively. With increasing EK-2612 concentration, acetyl-CoA carboxylase activity was more inhibited in barnyardgrass than in rice. Chlorophyll content in barnyardgrass was reduced greatly with the increase of EK-2612 concentrations, whereas chlorophyll content in rice was not affected by EK-2612. No phytotoxic symptoms were observed on rice due to EK-2612, having a good rice safety up to the level of 120 g a.i. ha(-1). These results suggest that EK-2612 has an excellent pre-emergence herbicidal activity against barnyardgrass without hampering the growth of rice.
    No preview · Article · Sep 2015 · Journal- Faculty of Agriculture Kyushu University
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    ABSTRACT: Upgraded post-harvest technology has recently been diffused to farmers in Cambodia in order to increase rice yield production and farmers' economic foundation. However, traditional method is predominantly practiced by rice producers even though it could be inefficient, resulting in loss of rice yield through grain shattering during harvesting, insect storage pest infestation or rodent damage. In light of these problems, the aim of this paper is to identify farmers' perception of loss and to estimate the relationship between the perceptions and socio-economic characteristics. A total of 200 rice farmers were selected from Kampot province in which the sources of loss were validated by the farmers rating 5 points of the Likert scale. Data undertaken from August to September 2014 were analyzed by using descriptive and regression analysis. The descriptive analysis, the finding ascertained that the farmers perceived rodent attacks as the most serious contributor to loss resulting from freely open rice granaries whereas rice loss by spoilage and contamination during storage was perceived by household heads as the least serious contributor because the stored rice that was dried properly was not aggregately favorable for insect growth. Hence, we strongly recommend that rice farmers should consider enhancing their rice granaries, especially grains should be dried properly before storage. The regression analysis, found that age, gender, number of family members, training access, credit access, and rice income were significantly associated with the perceptions. Interestingly, training access and rice income positively influenced the perceptions. Thus, we suggest that policy makers should provide training about post-harvest technology, including rodent protection and harvesting techniques to farmers to improve rice quality and income generation. Finally, farmers should cooperate with neighbors in the same community to treat rodents together, which is an efficient method for post-harvest loss reduction.
    No preview · Article · Sep 2015 · Journal- Faculty of Agriculture Kyushu University
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    ABSTRACT: This paper aims. to assess the preferences and willingness to pay for organic milk attributes among Chinese consumers. A discrete choice experiment was used to elicit preferences for organic milk attributes from 181 consumers regarding the importance of five organic milk attributes: organic feeding, animal welfare concerns, chemical concerns, certification and price. The random parameters logit (RPL) model was used to determine preference heterogeneity among respondents. The derived coefficients of the RPL model was used to estimate the implicit price of the milk attribute, and the respondent's willingness to pay for combined features of milk attributes. The willingness to pay for combined features of milk attributes was estimated at 3.190 Yuan per 250 ml of milk. Respondents preferred milk that comes from organically fed cattle, with certification label and with a lower price. Respondents' preferences for animal welfare attribute exhibited age and education specific differences. The negative effect of price on consumers' preferences can be offset by targeting older, highly educated and male consumers and by increasing consumer awareness about organic milk.
    No preview · Article · Sep 2015 · Journal- Faculty of Agriculture Kyushu University
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    ABSTRACT: In 2014 symptomatic soybean samples were collected throughout Korea, and were tested for the most important soybean viruses found in Korea, namely Soybean mosaic virus (SMV), Soybean yellow common mosaic virus (SYCMV), and Soybean yellow mottle mosaic virus (SYMMV). SYMMV was most commonly detected, followed by SMV. Only a few samples were found to be infected by SYCMV; of these, three samples were positive for double infection of SYMMV and SYCMV. Phylogenetic analysis of HC-Pro of the SMV isolates collected in 2014 from the eight provinces of Korea showed that most isolates were distinct from the most common Korean isolate detected in 2012, but related to other Korean, Chinese and North American isolates. No isolates varying in HC-Pro amino acid residues implicated in efficiency of RNA silencing suppression activity were detected in 2014. Phylogenetic analysis of ORF1 of both 2012 and 2014 SYCMV isolates showed differentiation into three subgroups. However, the geographical distribution of all three viruses in 2014 was essentially the same as observed in 2012. Quantitative real time PCR data also indicated a similar pattern of dual infected viruses occurrence as existed in 2012. Results showed SMV/SYMMV double infection RNA accumulation was not changed as much as SYMMV/SYCMV double infection. However, between double infection SMV/SYMMV, SYMMV RNA accumulation level rises more than SMV, and SYCMV RNA accumulation level decline a little compare with SYMMV. In summary, the 2014 survey showed that SMV and SYMMV are still the most prevalent soybean viruses in Korea, and all three viruses were still dispersed in the same areas where they were detected in 2012, although with an apparent shift towards SMV Group I isolates compared to 2012. The reason for the shift in SMV isolates across all Korean provinces is not clear, as seed transmission through farmer saved seed is presumed to be the main source of infection within the crop.
    No preview · Article · Sep 2015 · Journal- Faculty of Agriculture Kyushu University
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    ABSTRACT: In considering the possibility of controlling the spray volume of pesticides according to cultivation period, actual spray volumes for controlling insect pests were investigated in an apple orchard in the city of Gongju in Chungnam province. Before the flowering period, a spray volume of 372 1110 a was sprayed in the middle of April, whereas 449-452 1/10 a was sprayed from June to August when the leaves and fruit were luxuriate. Though 372 1110 a, much less than the standard spray volume, was used for controlling moths around the middle of April, more than the amount of the active ingredients sufficient for LC95 0.018 kg a.i./10 a, was attached in all treated plots. In mid July and late August, however, the standard spray volume, 450 1/10 a was sprayed, but the amount of the active ingredients in several plots was less than that inquired for LC95. This result showed that it was impossible to increase the treatment efficiency of the active ingredients by simply increasing spray volumes. It was identified that the more the amount of the active ingredients (kg a.i) per unit area (10 a) was, the better were the control effects against insect pests. Regarding the results of using insecticide spray to control aphids, A. citricola in the middle of June, the amounts of the active ingredients in several plots were under 0.010 kg a.i./10 a for LC95 so that less than 80% of the control value was shown after seven days of treatment. However, with the exception of three plots, all other plots that were sprayed with more a larger amount of the active ingredients and showed a 100% control value against A. citricola.
    No preview · Article · Sep 2015 · Journal- Faculty of Agriculture Kyushu University
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    ABSTRACT: Evaporative-drying, a novel technique for sperm preservation, has many advantages however, the results were inferior to freeze drying. The objective of this study is to investigate the effects of trehalose or sucrose supplemented into desiccation/preservation solution for sperm dehydration on sperm DNA integrity and the development of porcine embryos after intracytoplasmic injected with evaporatively dried boar spermatozoa. The addition of 0.2 M trehalose or sucrose significantly reduced DNA damage of sperm compared to those of other concentrations. The rate of cleaved embryo and blastocyst formation was significantly increased in oocytes injected with evaporatively dried sperm with 0.2 M trehalose. According to TUNEL assay, total cell number was increased, and the indices of TUNEL, fragmentation and total apoptosis were significantly decreased in blastocysts from ICSI with sperm treated with trehalose. Also, evaporatively dried sperm with trehalsoe were preserved at 4 degrees C for 1 year, and successfully produced pre implantation embryos after ICSI that transferred to the recipients became pregnant and maintained pregnancy periods until 3 months. Consequently, the present study found out that trehalose could reduce DNA damage of sperm during dehydration, and oocytes injected with sperm treated with trehalose developed to pre implantation embryos that might produce normal piglets after embryo transfer (ET).
    No preview · Article · Sep 2015 · Journal- Faculty of Agriculture Kyushu University
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    ABSTRACT: Larvae of Grapholita molesta Busck and Grapholita dimorpha Komai, which are major moth pests that affect apples in Korea, are very difficult to identify because of their morphological similarities. In this study, we investigated how to distinguish the larvae of these two species by using specific morphological features. Between 2013 and 2014, a total of 84 specimens were collected from apples suspected of infestation in Gunwi-gun and Cheongsong-gun, Gyeongsangbuk-do, Korea, and they were observed using a stereo microscope, optical microscope, and scanning electron microscope. We found that the number of anal proleg crochets of the two species was different. PCR-RFLP results for the two species showed that G. molesta and G. dimorpha have 18-28 and 12-17 anal proleg crochets, respectively. Our findings suggest that the number of anal proleg crochets could be an excellent morphological character that could be used to identify the larvae of the two species without the need for any further experiments.
    No preview · Article · Sep 2015 · Journal- Faculty of Agriculture Kyushu University
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    ABSTRACT: In this study, we conducted a hypothetical choice experiment in Beijing, China, to investigate residents' preferences for selected household kitchen waste source separation service attributes. A latent class approach was applied to observe heterogeneities among the respondents. The econometric analysis suggested that two segments of residents exist in the sample. Interestingly, 70.1% of the sample who were high educated, young, or respondents with more kitchen waste separation experience are more likely to accept the proposed separation services with frequent evening collection, while they do not show significant preferences for the attributes of instructor, container, and compensation. For the remaining (29.9% of the sample) who were low educated, old, and with less kitchen waste separation experience, joining the separation program would impose a loss of utility. Moreover, they seem to prefer services with the attributes of frequent collection, plastic bags, and compensation. However, they do not show significant preferences for the attributes of time and instructor.
    No preview · Article · Sep 2015 · Journal- Faculty of Agriculture Kyushu University
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    ABSTRACT: According to the analysis of the schisandra production structure of,48 farms in Jangsu-gun in Jeollabuk-do, a typical schisandra producing center of Korea, the average size of the farmland was 1.1ha and the schisandra cultivation scale was 0.5ha. The gross income of farms was 36.03 million won, and the gross income from schisandra was 14.96 million won, accounting for 42% of the gross income of farms. For the major income source for the household economy, 24 out of 48 chose schisandra, and for the scale of schisandra cultivation, 17 out of 29 farms chose to maintain or expand their current scale. However, most schisandra farms cited the dropping price of schisandra and the decrease in income due to the nationwide expansion of cultivation areas, unsold fresh fruits resulting from the lack of markets, and a lack of manpower as future issues. Respondents demanded the purchase of schisandra of local governments for the stabilization of the selling price and increased income, the opening up of the market through connections with pharmaceutical companies and food companies capable of mass selling, the expansion of public relations for Jangsu-gun schisandra, the expansion of processing facilities (syrup, dry schisandra, other processed goods, etc.), the installation of an auction market and a union market, the installation of washers, and the development of packing box design. The study reached the conclusion that farms should consider various ways to secure a stable production of schisandra and expand farm income, such as unifying Jangsu-gun schisandra related organizations, using the Geographical Indication System of the Korea Forest Service, expanding the urban rural exchange and sales and public relations in connection with local festivals, and developing processed goods that can increase added value compared with the fresh fruit.
    No preview · Article · Sep 2015 · Journal- Faculty of Agriculture Kyushu University
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    ABSTRACT: Amniotic fluid derived mesenchymal stem cells (AFS cells) have been considered as an applicable treatment of stem cell therapy in regenerative medicine. AFS cells have similar differentiation ability to embryonic stem cells with less ethical controversy. For applying in regeneration of injured and damaged tissues there are still considerable huddles which need to be overcome. One of the crucial problems is how sustains or even amplifies their multi potent ability till administration in damaged tissue/organ sites. The 2-D adherent culture method provides different environment compared to those of in vivo. 3-D culture method is an alternative manner to culture cells in in vivo like cell culture condition. Hanging drop is one of simple and effective 3-D culture systems. Here canine AFS cells were cultured in the hanging drops in which cells form spheroids with micro networks that allow exchanging cellular signalings similar to in vivo. Canine AFS cells were aggregated in tightly spaced spheres in hanging drops supplemented with 20% FBS. In the study of cellular senescence, AFS cells successfully formed and maintained spheroids regardless of their passages. In addition, the multipotent differentiation capacity of AFS cells in shape of 3-D spheroids was enhanced based on MSC differentiation assay after hanging drop culture. Noticeably, the expression levels of cartilage oligomeric matrix protein (COMP) and aggrecan (AGG) were significantly increased in 3-D spheroid cultured AFS cells compared to 2-D adherent cultured controls. Therefore, induction of spheroid formation by hanging drops is a useful method to provide 3-D in vivo like culture condition without changes of AFS cells differentiation capacity especially to induce chondrogenic differentiation for regenerating damaged cartilages.
    No preview · Article · Sep 2015 · Journal- Faculty of Agriculture Kyushu University
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    ABSTRACT: This study aims to identify the impact of variety and cultivation method to paddy yield within the large scale farms, which have been increasing over the latest decades in Japan. The study objects are 351 paddy fields in a farm corporation over 113 ha, locating in the Kanto region of Japan, and the yield is measured by smart combine. The result of ANOVA (Analysis of Variance) indicates that variety of paddy is a significant factor affecting the yield; although the cultivation method is not significant, it is significant interacting with the effect of variety. According to the result of Duncan's new multiple range test (DNMRT), the varieties are divided into three groups. Further analyses with the adoption of four factors and results of the following ANOVAs show that time of transplanting or sowing, growth duration from transplanting or sowing to earring, total Nitrogen amount and field area are effective factors. Finally, the key points for higher paddy yield are summarized, including suitable variety adoption, earlier transplanting or sowing and hence longer period for vegetative accumulation, sufficient Nitrogen application, and appropriate field areas.
    No preview · Article · Sep 2015 · Journal- Faculty of Agriculture Kyushu University