Effects of Ridge Height, Planting Depth, and Soil Mounding on Growth and Yield of Asparagus Spears by Whole Harvest Cultivation Method for One-year-old Plants

Abstract

In this study, the effects of ridge height, planting depth, and presprouting soil mounding on the growth and yield of asparagus were examined using the whole harvest cultivation method for one-year-old plants. The results showed that the planting depth and soil mounding affected the yield parameters of asparagus, such as the mean spear weight and total spear number. The planting depth or soil mounding was effective in increasing the number of thick spears, and factors affecting the mean spear weight differed depending on the planting depth and soil mounding. Soil mounding in shallow plantings increased the mean spear weight and marketable yield rate, resulting in higher yield values compared with no soil mounding. This indicates that soil mounding in presprouting ridges can be used to control the mean spear weight and total spear number.