Factors Related to Differences in Rice Yield among Districts in Narathiwat Province, Southern Thailand.

DOI Web Site 20 References

Bibliographic Information

Other Title
  • タイ・ナラチワ県におけるイネ収量の地域間差に関する研究

Search this article

Abstract

The objective of this study was to identify the factors related to rice yield differences among the main rice-producing districts in Narathiwat Province, southern Thailand. In Narathiwat Province, about 70% of total rice is produced in three districts; Tak-bai, Bacho and Yi-ngo. Yield survey showed that Yi-ngo district recorded the highest average yield throughout three consecutive years (3.5 t⋅ha-1), followed by the mountain area of the Bacho district (2.7 t⋅ ha-1), alluvial area of the Bacho district (2.6 t⋅ha-1), and Tak-bai district (2.2t⋅ ha-1) . The yield differences among the districts were not significantly associated with the planting density or fertilizer application level, but were mainly due to the difference in rice varieties. When Colijor and Litmus, the main cultivars in Yi-ngo, were grown in Takbai, they produced a higher grain yield than the traditional varieties cultivated in Tak-bai. These findings suggested that if the highyielding varieties could be introduced to other districts in Narathiwat Province, the average yield in the districts would increase. The soil properties were another determinant of the yield differences among the districts. Though the yield differences were not associated with the soil nitrogen content and soil organic matter content, they were closely correlated with the soil texture. The soil in Yi-ngo contained more sand, compared with the soil in Tak-bai, which was considered to be conducive to a high drainage efficiency.

Journal

References(20)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top