Research Development and Distribution of Hybrid Maize 'Nakhon Sawan 72'

摘要

In Thailand , the required amount of maize seed for the yearly planting is approximately 20,000 tons, and the domestic market supplies only 18,000 tons which covering around 90 % of maize production area, Due to the high cost of seed, except open pollinated varieties, some farmers keep their seed from the F2 generation which is self defeating more than 40 % yield decrease, In order to provide more choice to farmers, the Nakhon Sawan Field Crops Research Center proposed and carried out on hybrid research and development. Then "Nakhon Sawan 72",a highly downy mildew resistance and high yielding hybrid, was approved and released by the Department of Agriculture in 2000. Two inbred lines "Nakhon Sawan 1" and "Nakhon Sawan 2" were also registered. An attempt was made to introduce "Nakhon Sawan 72" to farmers, in particular concentration on seed production by local private companies, local organization and farmer groups. We took responsibility for transferring the technology of inbred and hybrid seed production, including field inspection. Because of the many successful results and acceptance of this project, Nakhon Sawan Field Crops Research Center will definitely continue releasing new varieties of hybrid maize to farmers. There is no doubt the technique of promotion and distribution of new varieties to farmers used for "Nakhon Sawan 72" will be followed for many years to come.