The Cultivation and Preservation of Long- shaped Yam
|Keywords:||山藥;塊莖;種植時期;覆蓋;保鮮;臺灣地區藥用植物資源之開發與利用學術研討會專刊;Yam;Dioscorea batatas;Tuber;Planting date;Mulching;Preservation;Proceeding of A Symposium on Development and Utilization of Resources of Medicinal Plants in Taiwan||Issue Date:||Apr-1995||Publisher:||台中：農業試驗所||Start page/Pages:||205-222||Source:||臺灣地區藥用植物資源之開發與利用學術研討會專刊:||Abstract:||
April is recommended as the optimum planting date for long-shaped yam, and planting no later than middle May. The yield would reduced sharply if planted lately in June. The unstable yield, planted in March, was found due to climate. The yield increased as the weight of seed tuber increased from log to 60g. Planted with various sections of seed tuber, head section seed tuber sprouted earlier than middle or tail section, and got the maximum yield. For improving production, staking culture and mulching with straw are also recommended.
Soaking yam tubers in calcium chloride solution after harvest, the decrease in rotting rate and weight loss was found during storage. The optimum concentration of calcium chloride varied depending on cultivars. Less weight loss was found as tubers packed with PE film or vacuum packaging than unpacked. For PE film package inducing rotting, tubers stored at 5℃ with vacuum packaging is suggested. For prepeeling yam tubers, the treatment of soaking tubers in 0.05M citric acid solution for one minute, and then vacuum packaging is suggested. With the treatment, the shelf life could last to 30 days at 5℃.
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