-
Article type: Cover
2009 Volume 80 Issue 5 Pages
Cover1-
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
-
Article type: Appendix
2009 Volume 80 Issue 5 Pages
App1-
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
-
Article type: Appendix
2009 Volume 80 Issue 5 Pages
App2-
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
-
Article type: Index
2009 Volume 80 Issue 5 Pages
Toc1-
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
-
Article type: Index
2009 Volume 80 Issue 5 Pages
Toc2-
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
-
T. Fujiwara
Article type: Article
2009 Volume 80 Issue 5 Pages
443-445
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
-
K. Yagi
Article type: Article
2009 Volume 80 Issue 5 Pages
446-449
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
-
T. Wagatsuma
Article type: Article
2009 Volume 80 Issue 5 Pages
450-453
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
-
W. Oyanagi
Article type: Article
2009 Volume 80 Issue 5 Pages
454-457
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
-
Y. Ishimaru
Article type: Article
2009 Volume 80 Issue 5 Pages
458-459
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
-
S. D. Kimura
Article type: Article
2009 Volume 80 Issue 5 Pages
460-461
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
-
N. Koga
Article type: Article
2009 Volume 80 Issue 5 Pages
462-463
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
-
T. Sawamoto
Article type: Article
2009 Volume 80 Issue 5 Pages
464-465
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
-
K. Murakami
Article type: Article
2009 Volume 80 Issue 5 Pages
466-468
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
-
Satoshi KANEDA, Seigo OKANO, Yasuhumi URASHIMA, Toshihumi MURAKAMI, Mi ...
Article type: Article
2009 Volume 80 Issue 5 Pages
469-476
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
Effects of an herbicide, commercial formulation of glyphosate (Roundup), on earthworm cast production on the surface in no-tillage field were investigated by using field and pot experiments. Direct impacts of the herbicide on earthworm mortality, growth and behavior were examined in pot experiment. In field experiments, effects of the herbicide on earthworm density, earthworm casting activity and soil moisture, and effects of litter removing after an application of herbicide on earthworm casting activities. Three treatments, glyphosate application on fall, application on spring, and no application, were set up in no-till field for the experiment, herbicide impacts on earthworm activity and behavior. Separately three treatments, litter removal treatment after herbicide application, just herbicide application and control, were set up for the experiment, litter removal impact on casting activity. No herbicide impacts on earthworm density were observed, and only one species, Pheretima (Amynthas) carnosus was dominated (95%) in the experiment field. There was no effect of applying herbicide on growth, mortality and behavior of the dominated earthworm in the pot experiment. Herbicide application induced not only increasing earthworm casting activity in spring (p<0.05) and also decreasing the activity in summer (p<0.05). Multiple linear regression analysis revealed that the soil temperature and the soil moisture were important factors for the earthworm cast production rate (p<0.01). Importance of surface litter for the casting activity was observed (p<0.05). This earthworm species produced around 3kg m^<-2> per year in no-till system. From these results, the herbicide did not have direct harmful impacts on the earthworm, but would effect on earthworm casting activity through variation of environmental factors, such as litter amount, soil temperature, and soil moisture.
View full abstract
-
Toshihiro UETA, Tomoko IKEBA, Dong-Hyuk AHN, Kazuhisa KATO, Takashi KA ...
Article type: Article
2009 Volume 80 Issue 5 Pages
477-486
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
The effects of drip fertigation were examined by analyzing the yield and quality of leaf vegetables, and assessing the efficiency of nitrogen (N) fertilization in outdoor plant culture in experimental and farmer fields using water from the Kasumigaura irrigation system. 1) Compared with the results from conventional cultivation, yield of spring Chinese cabbage increased with drip fertigation, even when the N application rate was reduced by 25% from that used in conventional culture. The plant N recovery rate increased by 30% and the rate of N leaching into subsoil was reduced in comparison with the levels in conventional cultivation. In addition, yield and quality of autumn lettuce were maintained, even when the N application rate was reduced by 47% from that used in conventional cultivation. The daily supply of a fixed amount of nutrient solution via the fertigation system, maintained soil moisture at levels greater than those in conventional cultivation; however, small variations were observed. 2) By stopping drip fertigation seven days before harvest, nitrate ion concentrations in spring Chinese cabbage were reduced, while vitamin C and sugar concentrations were increased, suggesting improvements in the quality of the plants' edible parts. The effects of drip fertigation on yield and quality of lettuce were verified by using a fertigation system in a farmer's field. The rate of N utilization by the farmed plants under drip fertigation was twice that under conventional cultivation.
View full abstract
-
Makoto KITOU, Hiroyuki MATUOKA, Yoko KONNDO, Naotsugu UCHIDA
Article type: Article
2009 Volume 80 Issue 5 Pages
487-493
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
Crop production in widely distributed acid soil in tropical and subtropical region is challenged due to less availability of some essential plant nutrients. Soil phosphorus (P) deficiency is a major limiting factor to increase crop production in acid soils where most of the P is bound into forms unavailable to plants. Therefore, selection and utilization of low phosphorus tolerant plants is worthwhile investment. Consequently, an investigation was undertaken to assess the low P tolerance potential of leguminous plants using akadama soil where P is bound with Aluminum. Four phosphate absorption coefficient (PAC) levels (0%, 1%, 5% and 10%) were maintained using phosphate fertilizer in akadama soil to study the plant growth parameters of four leguminous plants (Cajanus cajan, Glycine max, Cassia tora and Sesbania cannabina). Relative growth parameters of C. cajan and S. cannabina showed high P tolerance in comparison with G. max and C. tora. In addition, the amount of plant growth response to low P tolerance cultivated under 0% PAC in akadama soil was not be able to evaluate due to the initial P content in the seed when planting, which was responsible for the growth showed under cultivated in absence of phosphate fertilizer. The root length of S. cannabina under low P condition (1% PAC) was two times longer than that of the G. max. It can be suggested that the root system development in S. cannabina and its related P absorption ability may be closely associated with low P tolerance. Further detailed investigations should be carried out to understand the low P tolerance of S. cannabina, and its utilization as a green manure legume to improve acid soil properties.
View full abstract
-
Hirotaka IHARA, Morihiro MAEDA, Shigeru TAKAHASHI, Michio KOMADA, Take ...
Article type: Article
2009 Volume 80 Issue 5 Pages
494-501
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
Nitrogen leaching, uptake, and accumulation in the soil were examined by using ^<15>N tracer techniques in sandy soil monolith lysimeters (1m in depth) receiving ammonium sulfate fertilizer (AF) or cattle manure compost (CM) for 2.5 years. The combinational application treatments of AF and CM were also included to examine the mutual effect of the materials on the fate of nitrogen. For the first crop, Komatsuna (Brassica rapa var. peruviridis), the AF labeled with ^<15>N (F), ^<15>N-labeled AF and unlabeled CM (Fc), ^<15>N-labeled CM (C), or ^<15>N-labeled CM and unlabeled AF (Cf) were applied on each monolith lysimeter at a rate of 15gm^<-2> for each material. Unlabeled materials were used for all treatments in the later four crops, corn (Zea mays), and spinach (Spinacia oleracea) for two years. The following results were obtained: 1) Leaching, uptake, and accumulation of the nitrogen derived from labeled materials were, 6.5, 5.5, 1.6gm^<-2> in F, 6.0, 4.4, 2.5gm^<-2> in Fc, 2.1, 0.6, 10.2gm^<-2> in C, 2.2, 1.0, 10.0g m^<-2> in Cf treatments. 2) The cumulative amount of leaching plus uptake of the nitrogen derived from labeled materials was lower in the Fc treatment than in the F treatment in the 1st year, whereas it was higher in the Fc treatment than in the F treatment in the later years. These results suggest that, co-application of the AF and CM increased immobilization of nitrogen derived from AF in the 1st year and that it also increased re-mineralization in the later period. 3) The cumulative amount of leaching plus uptake of the nitrogen derived from labeled materials was higher in the Cf treatment than in the C treatment in the 1st year. On the other hand, it was lower in the Cf treatment than in the C treatment in the later. These results suggest that co-application of AF and CM accelerated the decomposition of labeled CM in the 1st year, but caused the decrease of labeled CM decomposition in the later period.
View full abstract
-
Yusuke TAKATA, Makoto NAKAI, Hiroshi OBARA
Article type: Article
2009 Volume 80 Issue 5 Pages
502-505
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
-
Akihiro FURUDATE, Yuuichi OTOBE
Article type: Article
2009 Volume 80 Issue 5 Pages
506-510
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
-
Kazuki TOGAMI, Makoto NAKAI, Seiichiro YONEMURA
Article type: Article
2009 Volume 80 Issue 5 Pages
511-515
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
-
Teppei KOMIYAMA, Eiji FUJISAWA, Seiichi NIIZUMA, Masahiko KATO, Hiroma ...
Article type: Article
2009 Volume 80 Issue 5 Pages
516-521
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
-
Hideo KUBOTERA, Tsuyoshi YAMANE, Yasuyuki WAKIYAMA, Yusuke ARAKAWA
Article type: Article
2009 Volume 80 Issue 5 Pages
522-525
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
-
Masahiro OKAMOTO, Hidetoshi UEKUSA, Kisei ITO
Article type: Article
2009 Volume 80 Issue 5 Pages
526-529
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
-
Yoichi SUGIKAWA, Eiji GOTO, Daiji ASAKA
Article type: Article
2009 Volume 80 Issue 5 Pages
530-533
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
-
Yuji HIKASA, Tomo OOMIYA, Eiji FUKUKAWA, Haruhiko NAKAZUMI
Article type: Article
2009 Volume 80 Issue 5 Pages
534-537
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
-
Tomonori ABE
Article type: Article
2009 Volume 80 Issue 5 Pages
538-544
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
-
Keiu KITADA
Article type: Article
2009 Volume 80 Issue 5 Pages
545-548
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
-
Mitsuru ABO, Kazuyuki INUBUSHI
Article type: Article
2009 Volume 80 Issue 5 Pages
549-550
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
-
Article type: Bibliography
2009 Volume 80 Issue 5 Pages
551-555
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
-
Article type: Appendix
2009 Volume 80 Issue 5 Pages
556-558
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
-
[in Japanese]
Article type: Article
2009 Volume 80 Issue 5 Pages
559-
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
-
[in Japanese]
Article type: Article
2009 Volume 80 Issue 5 Pages
559-
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
-
[in Japanese]
Article type: Article
2009 Volume 80 Issue 5 Pages
560-
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
-
Article type: Appendix
2009 Volume 80 Issue 5 Pages
App3-
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
-
Article type: Appendix
2009 Volume 80 Issue 5 Pages
App4-
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
-
Article type: Appendix
2009 Volume 80 Issue 5 Pages
App5-
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
-
Article type: Appendix
2009 Volume 80 Issue 5 Pages
App6-
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS
-
Article type: Cover
2009 Volume 80 Issue 5 Pages
Cover2-
Published: October 05, 2009
Released on J-STAGE: June 28, 2017
JOURNAL
FREE ACCESS