Parasitic nematodes of some patchouly cultivars in West Java (Indonesia)

anglais. An observation on plant parasitic nematodes in pachouly (Pogostemon cablin Benth) have been conducted from April to July 1991 at three experimental gardens of Research Institute for Spice and Medicinal Crops in West Java i.e. Cimanggu Bogor, Nagasari Cianjur, and Manoko Bandung. The results showed that 11 genera of plant parasitic nematodes i.e. Pratylenchus, Meloidogyne, Radopholus, Helicotylenchus, Tylenchus, Scutellonema, Ditylenchus, Aphelenchus, Rotylenchus, Criconemoides and Xiphinema were found in soil and roots of patchouly. Pratylenchus and Meloidogyne appeared to be two dominant species, Radopholus was found only at the Cimanggu E.G. Although, field symptoms of Radopholus infestation was specific. Based on the population of parasitic nematodes, it appeared that the roots of patchouly var. Aceh tended to be more susceptible to nematode than Java patchouli

indonésien. Suatu observasi mengenai nematoda parasit pada beberapa kultivar nilam (Pogostemon cablin Benth) telah dilakukan pada bulan April-Juli 1991 di tiga kebun percobaan Balai Penelitian Tanaman Rempah dan Obat di Jawa Barat, yaitu KP. Cimanggu Bogor, Nagasari Cianjur dan Manoko Bandung. Hasil observasi menunjukkan bahwa dalam akar dan tanah sekitar perakaran nilam ditemukan 11 genera nematoda parasit yaitu Pratylenchus, Meloidogyne, Radopholus, Helicotylenchus, Tylenchus, Scutellonema, Ditylenchus, Aphelenchus, Rotylenchus, Criconemoides dan Xiphinema. Pratylenchus dan Meloidogyne merupakan nematoda yang paling dominan. Radopholus hanya ditemukan di KP. Cimanggu, meskipun demikian serangan nematoda ini menunjukkan gejala yang khas di lapangan. Berdasarkan populasi nematoda parasit di dalam akar, ada kecendrungan bahwa nilam Aceh lebih mudah terserang nematoda daripada nilam Jawa