Effects of a newly developed hole-maker on the efficiency of planting asparagus
2016
Shimizu, T. (Agricultural department of Meiji University (Japan)) | Matsunaga, K. | Uragami, A. | Tsuge, K. | Yamaguchi, T. | Motoki, S.
We have developed a new hole-maker to plant plug seedlings (grown in cell tray) directly in fields instead of larger pots. In the present study on the forcing cultivation of asparagus, a survey was conducted to examine increases in the efficiency of planting plug seedlings directly in fields using the above-mentioned hole-maker (new method), when compared to the efficiency of planting pot seedlings using a conventional hole-maker (conventional method), and assess the growth amount- an index of the yield. The time required for both inexperienced and experienced growers to plant asparagus using the new method was significantly shorter than that based on the conventional method. Postures during planting were also assessed using an OWAS method based on the frequency and rate of action categories (AC), and the level of improvement in the postures of experienced growers while planting asparagus using the new method was significantly higher compared to when the conventional method was adopted. While there was no increase in the frequency of AC when asparagus was planted by inexperienced growers, there was an increase in the number of AC. A shorter time was required to plant asparagus, which suggests that the burden of planting using the new method on inexperienced growers is less than that when the conventional method is used. Although the plug seedlings used for the new method were smaller than the pot seedlings used for the conventional method, there were no significant differences in the growth amount of root stock between the two methods in autumn. Therefore, the same asparagus yield can be obtained using the new method and conventional method.
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