| Chainat Province, rice growing areas could be divided by the potential suitability of the soil at 3 levels were very reasonable (soil group 3, 4, 7 and 15) suitable medium (Soil group 6, 17, 18, 21, 22, 24 and 25) and less appropriate. (Soil group 31b, 35b and 55b). Survey and data collection of cultivated rice farmers. Chainat Province Year 2550-2552 included 920 cases showed that rice grown in Chai Nat province has at least nine varieties are consisting PTT 1, CNT 1, PSL 2 ,SPR 1, SPR 3, SPR 60, CNT 80(RD29), PTT 80(RD31) and KDML105 scattered throughout the region. Divided into two groups: rice photoperiod sensitivity (97.93%) were PTT 1, CNT 1, PSL 2, SPR 1, SPR 3, SPR 60, CNT 80(RD29) and PTT80 (RD31). Average yield 774 kg/rai. And rice photoperiod... |
