Farmer Management of Rice Variety Diversity in Northern Thailand |
Contents
BIOGRAPHICAL SKETCH | 9 |
II | 25 |
Description of Eight Villages Surveyed | 83 |
Copyright | |
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accessions active adoption agricultural agroecosystems appears average behavior cent central Chapter Chiangmai choices communities crop Dawk discarded disease District early economic effect eight environment ethnic extension factors farm farmers fertilizer fields Figure five four Gamphai genetic diversity germ plasm grain greater grew groups grow grown higher Hmong households increased indicate innovators irrigated isozyme groups Karen Khao land landscape less Leuang lists lowland Thai Mae Tha MaeSalap maintain measure MT/ha names natural nitrogen non-glutinous northern Thailand NSPT PaLaan PaNgiw patterns period Ping River planted popular populations problems production rainfed random relatively resistance result retained rice varieties sample season seed soil South Korea study area suggests survey Table tested ThaMon third traditional trial turnover upland rice Valley variability varietal diversity villages yield