Study on Hirschmanniella species found in rice in Yunnan, China
Yunnan is a major rice-producing province in China with approximately 0.9 million hectares grown annually. From 1998 to 2002, studies were done in rice fields on Hirschmanniella species (EU Annexes) which are important rice pests. They mainly infect rice roots, reducing tillering and yield (up to 40% in cases of severe infestations). Rice roots and attached soil were collected from various ecological regions in Yunnan and nematodes were extracted and identified. The following Hirschmanniella species were found: H. belli, H. caudacrena, H. diversa, H. gracilis, H. imamuri, H. mexicana, H. microtyla, H. mucronata, H. oryzae and H. spinicaudata. The most commonly found species were: H. oryzae and H. imamuri, often in mixed populations.
Hu XQ, Yu M, Lin LF, Wang Y, Yu SH (2004) Species and distribution of rice root nematode in Yunnan Province, China.
Agricultural Sciences in China, 8(3), 598-603.