Establishment of culturing techniques on year-round asparagus [Asparagus officinalis]
1999
Abe, S. (Oita-ken. Agricultural Research Center, Usa (Japan)) | Kai, S. | Hirayama, S. | Sato, H.
1. (1st-2nd year): Asparagus transplanting time was earlier, 2nd year yield was higher, space from May to July. Time to stem training start was earlier, 2nd year yield was higher. Therefore, time to stem training start was more effective for 2nd year yield than transplanting time. 2. (After the 3rd year): Spring stem yield was not affected by stem training number, but summer-autumn yield was higher, when training stem number was less. Stem number 9.1/square meter block showed the highest yield, similar to the summer-autumn yield trend. Yield of the block was 149kg/a. Therefore, we showed that 9.1/m2 was the best training stem number, that resulted in a high yield on this planting type. 3. (After the 3rd year): Regarding the training stem results, when the size was smaller, the fresh stem weight was less and yield of stem numbers was greater. When the size was larger, the fresh stem weight was heavier and yield of stem numbers was less. Yearly yield difference in training stem size. About sale aptitudes, best stem size was M-L class. The best training stem size was from 8 to 12mm, considering yield and market aptitudes. 4. (After the 3rd year): It was confirmed that spring yield was affected by changing the covering start time, and there are no difference in the treatment on summer-autumn yield or yearly yield. Therefore, March was best time to start covering, considering working condition. The stem training period was best from 30 to 50 days after harvest start
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