Occurrence of rice stripe disease in Nagasaki prefecture in 1985.

The 2008 overseas mass migration of the small brown planthopper, Laodelphax striatellus, and subsequent outbreak of rice stripe disease in western Japan

“…A few reports have implied that overseas migration and subsequent outbreak of rice stripe disease might have occurred in the western Kyushu region in 1985 (Fukamachi et al, 1986;Kimura et al, 1986;Sogawa, 1992), but little evidence was available to link overseas migration to rice stripe disease outbreaks in Japan.…”

Trap catches of the small brown planthopper, Laodelphax striatellus (Fallén) (Hemiptera: Delphacidae), in northern Kyushu district, Japan in relation to weather conditions

“…This response prompted the speculation that L. striatellus that had migrated from China might affect the prevalence of RSV disease in Kyushu district. In 1985, outbreaks of RSV disease occurred in Kyushu district, particularly in the western coastal region, and it was suggested that overseas immigration of L. striatellus into Kyushu was responsible (Fukamachi et al 1986;Kimura et al 1986;Sogawa 1992). Trap catches of L. striatellus were recorded at Isahaya and Minamisatsuma on June 5, 2008 and, subsequently, outbreaks of RSV disease occurred in parts of Kyushu district (Otuka et al 2010).…”

Technical classification of the clay mineralogical composition of paddy soils using multivariate analysis in reference to rice production

“…Moreover, the mean monthly temperature, especially the temperature of September, was the highest in 1985. In addition to the unfavorable weather conditions, rice stripe disease occurred extensively in Nagasaki Prefecture in the middle of August to September in 1985 (Kimura et al 1986) and it brought about serious damage to rice production. The weather conditions in 1982 and 1983 were intermediate between those of 1986 and 1985.…”