Tang Thi Hanh, T. Araki, P. Cuong, T. Mochizuki, A. Yoshimura, F. Kubota
{"title":"Characteristics of CO2 Exchange Rate of Flag Leaves in a Vietnamese Hybrid Rice Variety and Its Parents during Grain Filling Stage","authors":"Tang Thi Hanh, T. Araki, P. Cuong, T. Mochizuki, A. Yoshimura, F. Kubota","doi":"10.11248/JSTA.52.104","DOIUrl":"https://doi.org/10.11248/JSTA.52.104","url":null,"abstract":"","PeriodicalId":118800,"journal":{"name":"Tropical agriculture and development","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130008557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The purpose of the present study was to analyze the changes in the location of shifting cultivation fields, mainly of upland rice fields, in northern Thailand. Practically, the authors examined the land use history of two households in a Yao (Mien) community from 1980 to 2005. Rotational use, in which the same field is reused at an interval of several years, was confirmed in nine cases based on the annual changes in the location of upland rice fields. The duration of the average fallow period was similar for both households, namely, 5.0 years and 4.5 years after the late 1980s. The actual fallow period was highly variable, however, depending on the fields. A distribution of 1-10 years and 1-13 years was apparent in the fallow period for each household. The time when each household stopped using the fallow system differed depending on the strips of field, and the year when this first occurred was 1995 for one household and 1999 for the other. Our results underscored the variety of the processes involved during the transition from the shifting cultivation system to the permanent system for field cultivation or forestry, depending on both households and strips of field.
{"title":"Fallow Period and Transition in Shifting Cultivation in Northern Thailand Detected by Surveys of Households and Fields","authors":"T. Masuno, K. Ikeya","doi":"10.11248/JSTA.52.74","DOIUrl":"https://doi.org/10.11248/JSTA.52.74","url":null,"abstract":"The purpose of the present study was to analyze the changes in the location of shifting cultivation fields, mainly of upland rice fields, in northern Thailand. Practically, the authors examined the land use history of two households in a Yao (Mien) community from 1980 to 2005. Rotational use, in which the same field is reused at an interval of several years, was confirmed in nine cases based on the annual changes in the location of upland rice fields. The duration of the average fallow period was similar for both households, namely, 5.0 years and 4.5 years after the late 1980s. The actual fallow period was highly variable, however, depending on the fields. A distribution of 1-10 years and 1-13 years was apparent in the fallow period for each household. The time when each household stopped using the fallow system differed depending on the strips of field, and the year when this first occurred was 1995 for one household and 1999 for the other. Our results underscored the variety of the processes involved during the transition from the shifting cultivation system to the permanent system for field cultivation or forestry, depending on both households and strips of field.","PeriodicalId":118800,"journal":{"name":"Tropical agriculture and development","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115513990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
O. Chusri, N. Kozai, T. Ogata, H. Higuchi, Y. Yonemoto
{"title":"Application of Paclobutrazol for Flowering and Fruit Production of ‘Irwin’ Mango (Mangifera indica L.) in Okinawa","authors":"O. Chusri, N. Kozai, T. Ogata, H. Higuchi, Y. Yonemoto","doi":"10.11248/JSTA.52.69","DOIUrl":"https://doi.org/10.11248/JSTA.52.69","url":null,"abstract":"","PeriodicalId":118800,"journal":{"name":"Tropical agriculture and development","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123179304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effect of Heat Stress Application to Flower and Fruit on Seed Quality of Chili Pepper","authors":"P. Pagamas, E. Nawata","doi":"10.11248/JSTA.52.82","DOIUrl":"https://doi.org/10.11248/JSTA.52.82","url":null,"abstract":"","PeriodicalId":118800,"journal":{"name":"Tropical agriculture and development","volume":"14 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125855407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Ambuko, Y. Sekozawa, S. Sugaya, F. Itoh, Katsutoshi Nakamura, H. Gemma
{"title":"Postharvest Characteristics of Bananas Cultivated under Low Chemical and Conventional Production Systems in Ecuador","authors":"J. Ambuko, Y. Sekozawa, S. Sugaya, F. Itoh, Katsutoshi Nakamura, H. Gemma","doi":"10.11248/JSTA.52.43","DOIUrl":"https://doi.org/10.11248/JSTA.52.43","url":null,"abstract":"","PeriodicalId":118800,"journal":{"name":"Tropical agriculture and development","volume":"197 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114264394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Discrimination between Serotypes O and N of Potato virus Y Using a Multiplex PCR Assay","authors":"Mohamad Chikh Ali, T. Maoka, K. T. Natsuaki","doi":"10.11248/JSTA.52.37","DOIUrl":"https://doi.org/10.11248/JSTA.52.37","url":null,"abstract":"","PeriodicalId":118800,"journal":{"name":"Tropical agriculture and development","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134372264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R. Matsunaga, Bir B. Singh, Moutari Adamou, S. Tobita, K. Hayashi, Akira Kamidohzono
{"title":"Yield Performance, Nitrogen and Phosphorus Acquisition of Cowpea Germplasm Accessions in Low-Fertile Sandy Soils in the Sahelian Zone","authors":"R. Matsunaga, Bir B. Singh, Moutari Adamou, S. Tobita, K. Hayashi, Akira Kamidohzono","doi":"10.11248/JSTA.52.50","DOIUrl":"https://doi.org/10.11248/JSTA.52.50","url":null,"abstract":"","PeriodicalId":118800,"journal":{"name":"Tropical agriculture and development","volume":"245 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134097877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Influence of Direct Sowing and Transplanting on the Yielding Ability and Agronomic Traits of Finger Millet","authors":"S. Kasajima, N. Kurauchi, N. Inoue","doi":"10.11248/JSTA.52.58","DOIUrl":"https://doi.org/10.11248/JSTA.52.58","url":null,"abstract":"","PeriodicalId":118800,"journal":{"name":"Tropical agriculture and development","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130933785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Chromosomes and 5S rDNA-repeats of wild taro Colocasia esculenta from Myanmar","authors":"S. Nakayama, Y. Uga, Tin Maw Oo, M. Kawase","doi":"10.11248/JSTA.52.32","DOIUrl":"https://doi.org/10.11248/JSTA.52.32","url":null,"abstract":"","PeriodicalId":118800,"journal":{"name":"Tropical agriculture and development","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122294996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. Kurosawa, H. Do, Thanh Huu Nguyen, Le Thi Hong Tran, Lam Ho, K. Egashira
{"title":"Variations in Inorganic Nitrogen Levels in Surface and Groundwater in Farming Villages around Hanoi, Vietnam","authors":"K. Kurosawa, H. Do, Thanh Huu Nguyen, Le Thi Hong Tran, Lam Ho, K. Egashira","doi":"10.11248/JSTA.52.27","DOIUrl":"https://doi.org/10.11248/JSTA.52.27","url":null,"abstract":"","PeriodicalId":118800,"journal":{"name":"Tropical agriculture and development","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123903905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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