Havesting Date of Waxy Corn cv Ban Koh for the Highest Ear Quality and Seed

Abstract

The objective of this study was to determine the havesting date of waxy corn cv Ban Koh for the highiest ear as well as seed quality. The experiment was carried out at the Department of Agricultural Science, Faculty of Science and Technology, Phranakhon Si Ayutthaya Rajabhat University, during September to December, 2006. Samples of the waxy corn were harvested at 41 43 45 and 47 days after silking. Ear quality namely weight, length and widthof ear, were measured. For seed quality was divided into ten characteristics: moisture content, dry weight, length, thickness, germination, and speed of seed germination index, shoot length, root length and seedling dry weight were tested at 2 day intervals. The results showed that waxy corn seed cv Ban Koh reached the havesting date at 45 days after silking with the highest ear quality in term of weight, length and width of ear, and with 12.5 g maximum dry weight of 100 seeds and maximum of seed germination at 96.50%. The hightest seed size in term of width, length and thickness of seed at the havesting date was obtained at 45 days after silking. The maximum seed vigour in term of speed of germination index, shoot length, root length and seedling dry weight reached at 45 day after silking.