fields at the highland village of Thung Luang, in Mae Wang district of Chiang Mai (Lat. 18o 40′; Long. 98o 35′; Alt. 865 m) which had never received any fertilizer.
growing in farmers’ fields at the highland village of Thung Luang, in Mae Wang district of Chiang Mai (Lat. 18o 40′; Long. 98o 35′; Alt. 865 m) which had never received any fertilizer.