Recent trend of percentage of infective planthopper, Laodelphax striatellus (Fallén), transmitting the rice stripe virus, in Kyushu
Year: 1971
Type: article
Abstract: Surveys on percentages of infective planthopper have been continued since 1967 by the he-magglutination test, with parallel surveys on prevalence of planthopper by yellow pan water traps. The percentages at the first generation, immigrants into paddy fields, were rather high, exceeding 5% until 1969. In 1969, density of planthopper showed remarkable decrease due to unknown factors, which caused little occurrence of the rice stripe virus disease. Consequently, the percentage in the overwintering generation of 1969 to 1970 decreased clearly and it is still keeping a low level.It is important to follow whether or not the percentage shows any sign of increase due to change of agricultural economy, i.e., increase of fallow fields.
Source: Kyushu Plant Protection Research
Author: Ryoiti KISIMOTO
Language: English
Topic: Plant Virus Research Studies
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: diamond
OpenAlex ID: W2324405822